WorldWideScience

Sample records for satellite iras catalogs

  1. The Infrared Astronomical Satellite (IRAS) mission

    Science.gov (United States)

    Neugebauer, G.; Habing, H. J.; Van Duinen, R.; Aumann, H. H.; Beichman, C. A.; Baud, B.; Beintema, D. A.; Boggess, N.; Clegg, P. E.; De Jong, T.

    1984-01-01

    The Infrared Astronomical Satellite (IRAS) consists of a spacecraft and a liquid helium cryostat that contains a cooled IR telescope. The telescope's focal plane assembly is cooled to less than 3 K, and contains 62 IR detectors in the survey array which are arranged so that every source crossing the field of view can be seen by at least two detectors in each of four wavelength bands. The satellite was launched into a 900 km-altitude near-polar orbit, and its cryogenic helium supply was exhausted on November 22, 1983. By mission's end, 72 percent of the sky had been observed with three or more hours-confirming scans, and 95 percent with two or more hours-confirming scans. About 2000 stars detected at 12 and 25 microns early in the mission, and identified in the SAO (1966) catalog, have a positional uncertainty ellipse whose axes are 45 x 9 arcsec for an hours-confirmed source.

  2. Mission design for the infrared astronomical satellite /IRAS/

    Science.gov (United States)

    Lundy, S. A.; Mclaughlin, W. I.; Pouw, A.

    1979-01-01

    IRAS, a joint United States, Netherlands, United Kingdom astronomical satellite, is scheduled to be launched early in 1981 with the purpose of completing an all-sky survey in the infrared wavelengths from 8 to 120 microns and to observe objects of special interest. The mission design is driven by thermal constraints primarily determined by the Sun and Earth; the orbit and survey strategy must be chosen so as to satisfy the mission requirements before the cryogenic system is depleted of its liquid helium. Computer graphics help the designer choose valid survey strategies and evaluate resulting sky coverage.

  3. A Catalog of Luminous Infrared Galaxies in the IRAS Survey and Second Data Release of SDSS

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    We selected a sample of luminous infrared galaxies by cross-identification of the Faint Source Catalogue (FSC) and Point Source Catalogue (PSC) of the IRAS Survey with the Second Data Release of the SDSS. The size of our sample is 1267 for FSC and 427 for PSC by using the 2σ significance level cross-section. The "likelihood ratio" method is used to estimate the individual's reliability and for defining two more reliable subsamples (908 for FSC and 356 for PSC). A catalog of infrared,optical and radio data is compiled and will be used in further work. Some statistical results show that luminous infrared galaxies are quite different from ultra-luminous infrared galaxies. The AGN fractions of galaxies at different infrared luminosities and the radio-infrared correlations are consistent with the previous studies.

  4. Rectified Asteroid Albedos and Diameters from IRAS and MSX Photometry Catalogs

    Science.gov (United States)

    Ryan, Erin Lee; Woodward, Charles E.

    2010-10-01

    Rectified diameters and albedo estimates of 1517 main-belt asteroids selected from IRAS and the Mid-Course Space Experiment asteroid photometry catalogs are derived from updated infrared thermal models, the Standard Thermal Model and the Near-Earth Asteroid Thermal Model (NEATM), and Monte Carlo simulations, using new Minor Planet Center compilations of absolute magnitudes (H values) constrained by occultation- and radar-derived parameters. The NEATM approach produces a more robust estimate of albedos and diameters, yielding albedos of pv (NEATM mean) =0.081 ± 0.064. The asteroid beaming parameter (η) for the selected asteroids has a mean value of 1.07 ± 0.27, and the smooth distribution of η suggests that this parameter is independent of asteroid properties such as composition. No trends in η due to size-dependent rotation rates are evident. Comparison of derived values of η as a function of taxonomic type indicates that the beaming parameter values for S- and C-type asteroids are identical within the standard deviation of the population of beaming parameters.

  5. VizieR Online Data Catalog: IRAS08589-4714 molecular gas (Saldano+, 2016)

    Science.gov (United States)

    Saldano, H. P.; Vasquez, J.; Cappa, C. E.; Gomez, M.; Duronea, N.; Rubio, M.

    2016-09-01

    Files IRAS08589-4714CO.fits, IRAS08589-471413CO IRAS08589-4714C18O.fits, IRAS08589-4714HCO.fits and IRAS08589-4714_HCN.fits contain the 12CO, 13CO, C18O, HCO+ and HCN molecular lines (J=3-2) in the total velocity range (-20.0, +30.0)km/s with the velocity resolution of 0.11km/s, towards the IRAS08589-4714 source (RA,DE=09:00:40.5,-47:25:55) with a FOV 150x150-arcsec, observed with the Atacama Pathfinder EXperiment (APEX) telescope, Chile. (2 data files).

  6. VizieR Online Data Catalog: ATLASGAL clumps with IRAS flux and MALT90 data (Stephens+, 2016)

    Science.gov (United States)

    Stephens, I. W.; Jackson, J. M.; Whitaker, J. S.; Contreras, Y.; Guzman, A. E.; Sanhueza, P.; Foster, J. B.; Rathborne, J. M.

    2016-08-01

    The Millimetre Astronomy Legacy Team 90GHz (MALT90) survey (Foster+ 2011, J/ApJS/197/25; 2013PASA...30...38F; Jackson+ 2013PASA...30...57J) mapped 16 lines for 3246 clumps, primarily high-mass star-forming clumps that are >200Mȯ, as identified from the ATLASGAL 870um survey (Schuller et al. 2009A&A...504..415S). In order to compare luminosities derived from IRAS (LIR) to molecular line luminosities from MALT90 (Lmolecule), we first matched the MALT90 clumps to the IRAS Point Source Catalog v2.1 (PSC; see Cat. II/125). See section 2.1 for further explanations. (1 data file).

  7. A Catalog of Luminous Infrared Galaxies in the IRAS Survey and the Second Data Release of the SDSS

    CERN Document Server

    Cao, C; Wang, J L; Hao, C N; Deng, Z G; Xia, X Y; Zou, Z L; Cao, Chen; Wu, Hong; Wang, Jian-Ling; Hao, Cai-Na; Deng, Zu-Gan; Xia, Xiao-Yang; Zou, Zhen-Long

    2006-01-01

    We select the Luminous Infrared Galaxies by cross-correlating the Faint Source Catalogue (FSC) and Point Source Catalogue (PSC) of the IRAS Survey with the Second Data Release of the SDSS for studying their infrared and optical properties. The total number of our sample is 1267 for FSC and 427 for PSC by using 2$\\sigma$ significance level cross-section. The "likelihood ratio" method is used to estimate the sample's reliability and for a more reliable subsample (908 for FSC and 356 for PSC) selection. Then a Catalog with both the infrared, optical and radio informations is presented and will be used in further works. Some statistical results show that the Luminous Infrared Galaxies are quite different from the Ultra-Luminous Infrared Galaxies. The AGN fractions of galaxies with different infrared luminosities and the radio to infrared correlations are consist with previous studies.

  8. A ROSAT Bright Source Catalog Survey with the Swift Satellite

    CERN Document Server

    Fox, D B

    2004-01-01

    We consider the prospects for a complete survey of the 18,811 sources of the ROSAT All-Sky Survey Bright Source Catalog (BSC) with NASA's Swift gamma-ray burst (GRB) mission. By observing each BSC source for 500 s with the satellite's imaging X-ray and UV/optical telescopes, this "Swift Bright (Source) Catalog Survey" (Swift-BCS) would derive ~20 mCrab, 10-100 keV) with the wide-field Burst Alert Telescope (BAT); and a two-year all-sky BAT survey down to >~1 mCrab. The resulting expansion of the catalog of identified X-ray sources from 2000 to 18,000 will provide a greatly-enriched set of targets for observation by XMM-Newton, Chandra, and future high-energy observatories.

  9. The Bispectrum of IRAS Galaxies

    CERN Document Server

    Scoccimarro, R; Fry, J N; Frieman, Joshua A

    2000-01-01

    We compute the bispectrum for the galaxy distribution in the IRAS QDOT, 2Jy, and 1.2Jy redshift catalogs for wavenumbers 0.05 1 at large scales, \\chi^2 non-Gaussian initial conditions are ruled out at the 95% confidence level. The IRAS data do not distinguish between Lagrangian or Eulerian local bias.

  10. VizieR Online Data Catalog: SEAMBHs. I. Mrk 142, Mrk 335, and IRAS F12397+3333 (Du+, 2014)

    Science.gov (United States)

    Du, P.; Hu, C.; Lu, K.-X.; Wang, F.; Qiu, J.; Li, Y.-R.; Bai, J.-M.; Kaspi, S.; Netzer, H.; Wang, J.-M.; SEAMBH Collaboration

    2016-03-01

    All the spectroscopy and imaging observations reported here were obtained with the Shangri-La telescope (SLT: IAU site code O44) at the Lijiang Station of the Yunnan Observatory of the Chinese Academy of Sciences. The SLT started its operation in 2008. This is a 2.4m alt-azimuth mounted Ritchey-Chretien telescope. The rms pointing error is about 2arcsec rms, and the tracking accuracy with autoguiding is better than 0.5''/hr. The longitude of the station is 100°01'51''E, the latitude 26°42'32''N, and the altitude 3193m. The annually averaged seeing is ~1.5'' in terms of the FWHM of stars (measured with Yunnan Faint Object Spectrograph and Camera, YFOSC), ranging from 0.7'' to 2.0''. The YFOSC, built in 2010 by the astronomical instrumentation team at the Niels Bohr Institute, is similar to the ESO Faint Object Spectrograph and Camera, but with an additional focal reducer. It started its operation in 2011. YFOSC is a versatile instrument for low resolution spectroscopy and imaging, working at the Cassegrain focus. The CCD chip is an e2v CCD42-90 Back Illuminated Deep Depletion 2048*4608 pixel Scientific CCD Sensor whose pixel size is 13.5mm, pixel scale 0.283''/pixel, covering a 10'*10' field of view (FOV). Our Reverberation Mapping (RM) campaign started in 2012 October. All the spectra were obtained using YFOSC with Grism 14 which provides a resolution of 92Å/mm (1.8Å/pixel) and covers the wavelength range of 3800-7200Å. In this first paper of the series we report the observations of three objects: Mrk 142, Mrk 335, and IRAS F12397+3333. (3 data files).

  11. IRAS: Taking inventory

    Science.gov (United States)

    Reichhardt, Tony

    Even though its active life has ended, the Infrared Astronomical Satellite (IRAS) continues to make new discoveries as scientists at the Jet Propulsion Laboratory in Pasadena, Calif., pore over data from the orbiting satellite's year-long survey of the infrared universe. IRAS ran out of the cryogenic fluid that kept its telescope and detectors cold enough for sensitive, infrared observations last November, thus ending the survey phase of the international project. Now begins the detailed study of IRAS data and the preparation of maps and catalogues of all infrared sources found by the satellite for distribution to the scientific community.Among the discoveries already credited to IRAS are a ring of solid particles, possibly an evolving solar system, around the bright star Vega; six previously unknown comets; three narrow rings of dust lying within the plane of the solar system that may be the remains of asteroid or comet collisions; a small body designated 1983 TB that appears to be the burned-out cometary source of the annual Geminid meteor shower, and which passes closer to the sun at its perihelion than any planet or known asteroid; and many new and fascinating stellar and galactic sources.

  12. VizieR Online Data Catalog: Properties of asteroids in comet-like orbits (Kim+, 2014)

    Science.gov (United States)

    Kim, Y.; Ishiguro, M.; Usui, F.

    2017-03-01

    We used infrared asteroid databases compiled from three infrared all-sky surveyors, the IRAS (Neugebauer et al. 1984ApJ...278L..83N), AKARI (Murakami et al. 2007PASJ...59S.369M), and the Wide-field Infrared Survey Explorer (WISE; Wright et al. 2010AJ....140.1868W). Usui et al. (2014, J/PASJ/63/1117) compared these three infrared asteroid catalogs with valid sizes and albedos and merged them into a single catalog (I-A-W). They archived 138,285 asteroids with sizes and albedos, detected with either IRAS, AKARI, or WISE in I-A-W. A number of asteroids were detected by two or three satellites: 1993 asteroids by all three satellites, 2812 asteroids by AKARI and WISE, and 312 asteroids by IRAS and WISE. In such cases, Usui et al. (2014, J/PASJ/63/1117) selected data from AKARI as the highest priority, WISE as the second, and IRAS as the third priority, although there are no remarkable differences in the sizes and albedos among these catalogs. AKARI data were given highest priority because its data have less uncertainty than WISE in the sizes and albedos for the largest asteroids. We used the I-A-W catalog in the analysis of ACOs. (1 data file).

  13. VizieR Online Data Catalog: 2007-2016 Pulkovo Uranian satellites obs. (Ershova+, 2017)

    Science.gov (United States)

    Ershova, A. P.; Roshchina, E. A.; Izmailov, I. S.

    2016-11-01

    Observations of the main Uranian satellites were made with the 26-inch refractor (D/F=65cm/1041.3cm) at the Pulkovo Observatory in 2007-2016. The CCD camera FLI Pro Line was used (3056x3056px, each pixel of 12-microns). The field of view -- 12'x12', focal plane scale -- 19.8"/mm, scale on the CCD frames -- 0.24"/px. The UCAC4 catalog was used as a reference. Coordinates' epoch is the J2000.0. Average values of Standart Error of the Mean (SEM) of RA and DEC for each satellite are shown in table below. Satellite RASEM DECSEM ------------------------------------------------ Ariel (U1) 0.06" 0.06" Umbriel (U2) 0.05" 0.07" Titania (U3) 0.02" 0.02" Oberon (U4) 0.02" 0.02" ------------------------------------------------ Coordinates with their errors are shown in the "obsperr.dat" file. The "obs.dat" file was made according to MPC format and contains data in the same order as "obsperr.dat". Both files contain date of observation and satellite index so sit is easy to compare strings. (2 data files).

  14. OH masers associated with IRAS point sources

    NARCIS (Netherlands)

    Masheder, MRW; Cohen, RJ; Martin-Hernandez, NL; Migenes,; Reid, MJ

    2002-01-01

    We report a search for masers from the Lambda-doublet of the ground-state of OH at 18cm, carried out with the Jodrell Bank Lovell Telescope and with the 25m Dwingeloo telescope. All objects north of delta = -20degrees which appear in the IRAS Point Source Catalog with fluxes > 1000 Jy at 60mum and

  15. Spatial analysis of IRAS observations of nearby spirals

    Science.gov (United States)

    Ball, Roger; Lo, R. Y.

    1990-01-01

    The unbiased survey of the infrared sky carried out by the Infrared Astronomy Satellite (IRAS) satellite has greatly accelerated advances in understanding the dust component of our own and external galaxies. However, most extragalactic studies to date have been based on the IRAS Point Source Catalog (PSC), which has two serious limitations. First, in sources where a significant fraction of the flux is extended, significant errors may result from using PSC fluxes in comparative studies, and these errors could be systematic if the tendency to be non-pointlike depends on physical properties of the galaxy. Additionally, use of PSC fluxes rules out any direct investigation of the spatial distribution of the IRAS emission from disks in external galaxies. Since work on the Galactic IRAS results has shown that very different physical processes can make varying contributions to the observed flux, it is important to look at a wide sample of galaxies with some spatial resolution to study the relative dominance of these processes under a variety of conditions. Here, researchers report on work they are doing to carry out this program for many nearby spirals, using an analysis package that was developed for this purpose. Researchers carried out analysis for a sample of 121 nearby spirals. The fraction of the flux contained in a point source varies from 0 to 1 across the sample, all of which are well resolved at their nominal optical diameters. There is no evidence that the galaxies of smaller angular size are less likely to be resolved by IRAS at this level. The program gives results which are quite repeatable from scan to scan; the fraction f (point source flux over total flux) at 60 microns has typical errors of 0.03 when different scans are combined. Approximately two-thirds of the sample have more flux in the extended than in the nuclear component. There is a tendency for earlier-type spirals to be less centrally concentrated, but this effect is slight and the degree of

  16. Evidence for mass loss from IRAS observations of classical Cepheids

    Science.gov (United States)

    Deasy, H.; Butler, C. J.

    1986-04-01

    Hypotheses and evidence regarding mass loss from classical Cepheid variable are considered. Mass loss from such stars is suspected on two grounds. First, it may provide an explanation of the persistent discrepancy between estimates of Cepheid masses based on the theories of stellar pulsation and of stellar evolution (Cox, 1980). Second, theoretical models of pulsating atmospheres (Willson and Bowen, 1985) suggest that a pulsation mechanism may be responsible for causing, or enhancing, mass loss from Cepheids. In order to test these hypotheses, evidence of anomalous mass loss was sought by making a comparison between the infrared emission of Cepheids and that of nonvariable supergiants in the same luminosity and effective temperature range. A search of the IRAS (Infrared Astronomy Satellite) Point Source Catalog (1985) found a number of Cepheids and stable supergiants which showed emission in at least one of the IRAS wavelength bands. Some long-period Cepheids showed infrared excesses with respect to their nonpulsating counterparts, while emission from Cepheids with periods of less than 10 days was comparable to the levels seen in the stable supergiants. Mass loss rates of up to 7 x 10 to the -7th solar mass per year were derived from the infrared excesses, which is sufficiently high to have a major effect on the evolution of these stars.

  17. Revisiting the collision risk with cataloged objects for the Iridium and COSMO-SkyMed satellite constellations

    Science.gov (United States)

    Pardini, Carmen; Anselmo, Luciano

    2017-05-01

    After two decades of slightly declining growth rate, the population of cataloged objects around the Earth increased by more than 56% in just a couple of years, from January 2007 to February 2009, due to two collisions in space involving the catastrophic destruction of three intact satellites (Fengyun 1C, Cosmos 2251 and Iridium 33) in high inclination orbits. Both events had occurred in the altitude range already most affected by previous launch activity and breakups. In 2011 a detailed analysis had been carried out to analyze the consequences of these fragmentations, in particular concerning the evolution of the collision risk for the Iridium and COSMO-SkyMed satellite constellations. Five years after such first assessment, the cataloged objects environment affecting the two constellations was revisited to evaluate how the situation had evolved due to the varying contribution of the above mentioned breakup fragments and the space activities carried out in the meantime. Being distributed, at 778 km, over six nearly polar orbit planes separated by just 30° at the equator, the Iridium satellites represent a very good gauge for checking the evolution of the environment in the most critical low Earth region. In approximately five years, from May 2011 to June 2016, the average flux of cataloged objects on the Iridium satellites increased by about 14%, to 1.59×10-5 m-2 per year. The cataloged fragments of Fengyun 1C, Cosmos 2251 and Iridium 33 still accounted for, on average, 54% of the total flux. More than 39% of the latter was associated with the Fengyun 1C fragments, about 11% with the Cosmos 2251 fragments and less than 4% with the Iridium 33 fragments. Specifically concerning the mutual interaction among the Iridium 33 debris and the parent constellation, the progressive dispersion and rather fast decay of the fragments below the Iridium operational altitude, coupled with a slow differential plane precession and low average relative velocities with respect to

  18. Modeling IRA Accumulation and Withdrawals

    OpenAIRE

    Sabelhaus, John

    2000-01-01

    Empirical analysis of IRA accumulation and withdrawal patterns is limited because information about IRA balances and flows is not available for a sample of taxpayers. This paper combines survey data on IRA balances with individual tax return data on IRA flows to study IRA accumulation and withdrawal patterns across cohorts. The analysis shows that IRA rules such as penalties for early withdrawals and minimum distribution requirements have predictable effects on IRA flows. The estimated propen...

  19. IRIS: A new generation of IRAS maps

    CERN Document Server

    Miville-Deschênes, M A; Miville-Deschenes, Marc-Antoine; Lagache, Guilaine

    2004-01-01

    The Infrared Astronomical Satellite (IRAS) had a tremendous impact on many areas of modern astrophysics. In particular it revealed the ubiquity of infrared cirrus that are a spectacular manifestation of the interstellar medium complexity but also an important foreground for observational cosmology. With the forthcoming Planck satellite there is a need for all-sky complementary data sets with arcminute resolution that can bring informations on specific foreground emissions that contaminate the Cosmic Microwave Background radiation. With its 4 arcmin resolution matching perfectly the high-frequency bands of Planck, IRAS is a natural data set to study the variations of dust properties at all scales. But the latest version of the images delivered by the IRAS team (the ISSA plates) suffer from calibration, zero level and striping problems that can preclude its use, especially at 12 and 25 micron. In this paper we present how we proceeded to solve each of these problems and enhance significantly the general quality...

  20. Serially Concatenated IRA Codes

    CERN Document Server

    Cheng, Taikun; Belzer, Benjamin J

    2007-01-01

    We address the error floor problem of low-density parity check (LDPC) codes on the binary-input additive white Gaussian noise (AWGN) channel, by constructing a serially concatenated code consisting of two systematic irregular repeat accumulate (IRA) component codes connected by an interleaver. The interleaver is designed to prevent stopping-set error events in one of the IRA codes from propagating into stopping set events of the other code. Simulations with two 128-bit rate 0.707 IRA component codes show that the proposed architecture achieves a much lower error floor at higher SNRs, compared to a 16384-bit rate 1/2 IRA code, but incurs an SNR penalty of about 2 dB at low to medium SNRs. Experiments indicate that the SNR penalty can be reduced at larger blocklengths.

  1. Better Ira Remsen Demonstration

    Science.gov (United States)

    Dalby, David K.; Maynard, James H.; Moore, John W.

    2011-01-01

    Many versions of the classic Ira Remsen experience involving copper and concentrated nitric acid have been used as lecture demonstrations. Remsen's original reminiscence from 150 years ago is included in the Supporting Information, and his biography can be found on the Internet. This article presents a new version that makes the demonstration more…

  2. [IRA protection. Needs and possibilities].

    Science.gov (United States)

    Schroeder, P; Krutmann, J

    2009-04-01

    When it comes to skin damage, solar radiation is often regarded to be identical to ultraviolet (UV) but it includes much more. Over 90% of solar radiation is in the non-UV-range. Infrared A radiation (IRA, 760-1440 nm) accounts for around 30% of the solar energy reaching the earth's surface and exert detrimental effects on the skin. IRA alters the collagen equilibrium of the dermal extracellular matrix by leading to an increased expression of the collagen degrading enzyme matrixmetalloproteinase-1 while decreasing the expression of the dominant collagen gene Col1alpha1. IRA therefore leads to endpoints similar to UV, but the underlying biological mechanisms are substantially different. IRA acts via the mitochondria. IRA-specific protective approaches should be added to conventional sun protections strategies.

  3. Multi-wavelength study of two possible cloud-cloud collision regions: IRAS 02459+6029 and IRAS 22528+5936

    Institute of Scientific and Technical Information of China (English)

    Nan Li; Jun-Jie Wang

    2012-01-01

    Based on observations of 12CO (J=2-1),we select targets from archived Infrared Astronomical Satellite (IRAS) data of IRAS 02459+6029 and IRAS 22528+5936 as samples of cloud-cloud collision,according to the criteria given by Vallee.Then we use the Midcourse Space Experiment (MSX) A band (8.28 μm) images and the NRAO VLA Sky Survey (NVSS) (1.4 GHz) continuum images to investigate the association between molecular clouds traced by the CO contour maps.The distribution of dust and ionized hydrogen shows an obvious association with the CO contour maps toward IRAS 02459+6029.However,in the possible collision region of IRAS 22528+5936,NVSS continuum radiation is not detected and the MSX sources are merely associated with the central star.The velocity fields of the two regions indicate the direction of the pressure and interaction.In addition,we have identified candidates of young stellar objects (YSOs) by using data from the Two Micron All Sky Survey (2MASS) in JHK bands expressed in a color-color diagram.The distribution of YSOs shows that the possible collision region is denser than other regions.All the evidence suggests that IRAS 02459+6029 could be an example of cloud-cloud collision,and that IRAS 22528+5936 could be two separate non-colliding clouds.

  4. Supervised and unsupervised classification - The case of IRAS point sources

    Science.gov (United States)

    Adorf, Hans-Martin; Meurs, E. J. A.

    Progress is reported on a project which aims at mapping the extragalactic sky in order to derive the large scale distribution of luminous matter. The approach consists in selecting from the IRAS Point Source Catalog a set of galaxies which is as clean and as complete as possible. The decision and discrimination problems involved lend themselves to a treatment using methods from multivariate statistics, in particular statistical pattern recognition. Two different approaches, one based on supervised Bayesian classification, the other on unsupervised data-driven classification, are presented and some preliminary results are reported.

  5. Cataloging LEO and GEO Objects Based on Metric Data Collected by a Single Satellite%基于单星测轨进行LEO和GEO目标编目

    Institute of Scientific and Technical Information of China (English)

    柳仲贵; 郝世锋

    2012-01-01

    Space-based surveillance has the advantage of high coverage and short time interval because it is beyond the limits of land, territory and weather. A self-contained space-based surveillance can not only improve the precision of space object orbits, but also support the catalog of important objects independently in the case of collapse of ground sensors. Therefore, it has high strategic and tactical value. To make up for the shortage of existing space-surveillance systems and to meet the requirements of self contained space-based surveillance, this paper presents a space-based surveillance design at an altitude of about 9 000 km, zero degree inclination and with seven visible spectrum sensors. Simulation shows that it can be self-contained to support catalog of LEO and GEO objects even with a single satellite.%针对既有天基探测的不足,本着降低卫星制造难度、使用复杂度,拓展监视对象的原则,针对编目测轨所需,论证设计了一个采用零倾角、9 000 km高度轨道,装有7个可见光探测器,以空域监视方式支持空间目标编目测轨的构想.该构想只需1颗卫星,即可形成空间目标编目所需的测轨,独立支持LEO(低地球轨道)和GEO(地球同步轨道)目标的编目管理,具有战略、战术双重价值.

  6. Infrared Study of the Southern Galactic Star-Forming Regions Associated with IRAS 10049-5657 and IRAS 10031-5632

    Science.gov (United States)

    Vig, S.; Ghosh, S. K.; Ojha, D. K.; Verma, R. P.

    2008-10-01

    We investigate the physical conditions of the interstellar medium and stellar components in the regions of the southern Galactic star-forming complexes associated with IRAS 10049-5657 and IRAS 10031-5632. These regions have been mapped simultaneously in two far-infrared bands (λeff ~ 150 and 210 μm), with ~1' angular resolution using the Tata Institute of Fundamental Research 1 m balloon-borne telescope. Spatial distribution of the temperature of cool dust and optical depth at 200 μm have been obtained taking advantage of the similar beams in the two bands. The HIRES processed Infrared Astronomical Satellite (IRAS) maps at 12, 25, 60, and 100 μm have been used for comparison. Using the Two Micron All Sky Survey near-infrared sources, we find the stellar populations of the embedded young clusters. A rich cluster of OB stars is seen in the IRAS 10049-5657 region. The fits to the stellar density radial profile of the cluster associated with IRAS 10049-5657 have been explored with the inverse radius profile as well as the King's profile; the cluster radius is ~2 pc. The source in the cluster closest to the IRAS peak is IRA-7, which lies above the zero-age main-sequence curve of spectral type O5 in the color-magnitude diagram. Unlike IRAS 10049-5657, a small cluster comprising a few deeply embedded sources is seen at the location of IRAS 10031-5632. Self-consistent radiative transfer modeling aimed at extracting important physical and geometrical details of the two IRAS sources shows that the best-fit models are in good agreement with the observed spectral energy distributions. The geometric details of the associated cloud and optical depths (τ100) have been estimated. A uniform density distribution of dust and gas is implied for both the sources. In addition, the infrared ionic fine-structure line emission from gas has been modeled for both the regions and compared with data from the IRAS low-resolution spectrometer. For IRAS 10049-5657, the observed and modeled

  7. Cosmic Web of Galaxies in the COSMOS Field: Public Catalog and Different Quenching for Centrals and Satellites

    CERN Document Server

    Darvish, Behnam; Martin, D Christopher; Sobral, David; Scoville, Nick Z; Stroe, Andra; Hemmati, Shoubaneh; Kartaltepe, Jeyhan

    2016-01-01

    We use a mass complete (log($M/M_{\\odot}$) $\\geqslant$ 9.6) sample of galaxies with accurate photometric redshifts in the COSMOS field to construct the density field and the cosmic web to $z$=1.2. The comic web extraction relies on the density field Hessian matrix and breaks the density field into clusters, filaments and the field. We provide the density field and cosmic web measures to the community. We show that at $z$ $\\lesssim$ 0.8, the median star-formation rate (SFR) in the cosmic web gradually declines from the field to clusters and this decline is especially sharp for satellites ($\\sim$ 1 dex vs. $\\sim$ 0.5 dex for centrals). However, at $z$ $\\gtrsim$ 0.8, the trend flattens out for the overall galaxy population and satellites. For star-forming galaxies only, the median SFR is constant at $z$ $\\gtrsim$ 0.5 but declines by $\\sim$ 0.3-0.4 dex from the field to clusters for satellites and centrals at $z$ $\\lesssim$ 0.5. We argue that for satellites, the main role of the cosmic web environment is to contr...

  8. Cosmic Web of Galaxies in the COSMOS Field: Public Catalog and Different Quenching for Centrals and Satellites

    Science.gov (United States)

    Darvish, Behnam; Mobasher, Bahram; Martin, D. Christopher; Sobral, David; Scoville, Nick; Stroe, Andra; Hemmati, Shoubaneh; Kartaltepe, Jeyhan

    2017-03-01

    We use a mass complete (log(M/{M}ȯ ) ≥slant 9.6) sample of galaxies with accurate photometric redshifts in the COSMOS field to construct the density field and the cosmic web to z = 1.2. The comic web extraction relies on the density field Hessian matrix and breaks the density field into clusters, filaments, and the field. We provide the density field and cosmic web measures to the community. We show that at z ≲ 0.8, the median star formation rate (SFR) in the cosmic web gradually declines from the field to clusters and this decline is especially sharp for satellites (∼1 dex versus ∼0.5 dex for centrals). However, at z ≳ 0.8, the trend flattens out for the overall galaxy population and satellites. For star-forming (SF) galaxies only, the median SFR is constant at z ≳ 0.5 but declines by ∼0.3–0.4 dex from the field to clusters for satellites and centrals at z ≲ 0.5. We argue that for satellites, the main role of the cosmic web environment is to control their SF fraction, whereas for centrals, it is mainly to control their overall SFR at z ≲ 0.5 and to set their fraction at z ≳ 0.5. We suggest that most satellites experience a rapid quenching mechanism as they fall from the field into clusters through filaments, whereas centrals mostly undergo a slow environmental quenching at z ≲ 0.5 and a fast mechanism at higher redshifts. Our preliminary results highlight the importance of the large-scale cosmic web on galaxy evolution.

  9. Far infrared and submillimetre surveys: from IRAS to Akari, Herschel and Planck

    CERN Document Server

    Rowan-Robinson, Michael

    2015-01-01

    We discuss a new IRAS Faint Source Catalog galaxy redshift catalogue (RIFSCz) which incorporates data from Galex, SDSS, 2MASS, WISE, Akari and Planck. Akari fluxes are consistent with photometry from other far infrared and submillimetre missions provided an aperture correction is applied. Results from the Hermes-SWIRE survey in Lockman are also discussed briefly, and the strong contrast between the galaxy populations selected at 60 and 500 mu is summarized.

  10. Evidence for mass loss from IRAS observations of classical Cepheids

    Energy Technology Data Exchange (ETDEWEB)

    Deasy, H.; Butler, C.J.

    1986-04-24

    In order to test hypotheses concerning mass loss from classical Cepheid variables, evidence of anomalous mass loss was sought by making a comparison between the infrared emission of Cepheids, and that of nonvariable supergiants, in the same luminosity and effective temperature range. A search of the IRAS (Infrared Astronomy Satellite) catalogue found a number of Cepheids and stable supergiants which showed emission in at least one of the IRAS wavelength bands. Some long-period Cepheids showed infrared excesses with respect to their non-pulsating counterparts, while emission from Cepheids with periods of less than 10 days was comparable to the levels seen in the stable supergiants. Mass loss rates of up to 7 x 10/sup -7/ M solar masses yr/sup -1/ were derived from the infrared excesses, which is sufficiently high to have a major effect on the evolution of these stars.

  11. IRAS observations of RCW 86

    Science.gov (United States)

    Greidanus, H.; Strom, R. G.

    1990-12-01

    Infrared maps and fluxes of the supernova remnant RCW 86 (MSH 14-63) were obtained from the IRAS data base, using a destripping and a spectral decomposition technique to isolate the weak IR emission of RCW 86 from all other contributions in the IRAS maps. It is shown that the IR brightness maps correlate very well with the X-ray-brightness, the optical, and the radio images. A comparison with the three other young shell-type SNRs Tycho, Kepler, and Cas A showed that the IR temperatures and luminosities of these objects decrease with age. For all objects, however, the IR- and X-ray-based densities are similar, while the X-ray-derived masses are an order of magnitude above the IR masses.

  12. Dies irae ~Acta est Fabula~

    Institute of Scientific and Technical Information of China (English)

    2010-01-01

    从2007年11月的Diesirae Also sprach Zarathstra到2009年的7月的Dies irae Also sprach Zarathustra—die Wieder kunfl-,Light社的Diesirae的完全版可说是时隔两年的大坑,发行了两个非完全版的游戏吊足玩家们的胃口后。

  13. Transcending boundaries with Ira Hirsh

    Science.gov (United States)

    Singh, Punita G.

    2002-05-01

    Ira Hirsh has made many contributions to various fields of acoustics from speech, hearing, psychological and physiological acoustics, to musical and architectural acoustics. It was a privilege for me to have been his student in all these areas, and to have had him as a guide through masters and doctoral degree programs that focused on topics that lie at the boundaries connecting these disciplines. Ira was not a prescriptive advisor, imposing particular research topics or procedures on his graduate students. Rather, he encouraged originality, innovation, and personal goal setting. He would subtly suggest starting points and provide landmarks as references, rather than explicit directions leading to them. One had to navigate the path by ones own wits. This approach encouraged lateral, out-of-the box thinking, while also leading to respectful appreciation of historic trajectories in scientific research. During our time together, we worked on several aspects of music, including, rhythm, melody, pitch, and timber perception. Some of this work will be recapitulated, highlighting Ira's role in its exposition and development. His multidimensional personality, astute insights, colorful remarks, wry humor, care, and concern are qualities to be cherished-beyond the boundaries of campus, city, country, and contemporaneity.

  14. IRA balances and contributions: an overview of the EBRI IRA database.

    Science.gov (United States)

    Copeland, Craig

    2010-09-01

    NEW IRA DATABASE: The Employee Benefit Research Institute created the EBRI IRA Database in order to more closely examine retirement savings behavior. The EBRI IRA Database is able to link individuals within and across the data providers and will also be able to link the data with participants in 401(k) plans, allowing retirement funds to be tracked as they are generated, rolled over, and ultimately used. This Issue Brief is the first of a series of publications analyzing the EBRI IRA Database, and highlights the distribution of IRA owners by IRA type, average and median account balances, and contributions to IRAs. The data security techniques used by the data providers assure that EBRI has no ability to identify individuals so that all privacy is assured. IRA TYPES: In the EBRI IRA Database, IRAs are classified into four types: traditional (originating from contributions), rollovers from other retirement plans, Roth, and SEP/SIMPLE. The distribution of the IRA accounts is 33.6 percent traditional IRAs; 33.4 percent rollover IRAs (combined with the traditional IRAs, 67 percent); 23.4 percent Roth IRAs; the remaining 9.6 percent are SEPs and SIMPLEs. OWNERSHIP BY AGE AND GENDER: IRA owners were more likely to be male, especially those having a rollover or a SEP/SIMPLE IRA. Among all IRA participants in the database, nearly one-half (48.3 percent) were ages 45-64. Only 16.7 percent of those owning a traditional IRA were under age 45, compared with 46.5 percent for those with a Roth, 30.4 percent for rollovers, and 34.8 percent for those with a SEP or SIMPLE. AVERAGE AND MEDIAN BALANCES: The average and median IRA account balance in 2008 was $54,863 and $15,756, respectively, while the average and median IRA individual balance (all accounts from the same person combined) was $69,498 and $20,046, Individuals with a rollover balance had the highest average and median balance at $91,783 and $31,264. Roth owners had the lowest average and median balance at $14,056 and $7

  15. Development of the first infrared satellite observatory

    Science.gov (United States)

    Smith, G. M.; Squibb, G. F.

    1984-01-01

    A development history is given for the Infrared Astronomical Satelite (IRAS), whose primary mission objective is an unbiased, all-sky survey in the 8-120 micron wavelength range. A point source catalog of more than 200,000 IR sources, to be published later this year, represents the accomplishment of this objective. IRAS has also conducted 10,000 pointed observations of specific objects. Attention is given to the cost increases and schedule slips which resulted from the substantial technical challenges of IRAS hardware and software development, and to the management techniques which had to be employed in this major international project.

  16. Radio occultation experiments with INAF-IRA radiotelescopes.

    Science.gov (United States)

    Pluchino, S.; Schillirò, F.; Salerno, E.; Pupillo, G.

    The Radio Occultation research program performed at the Medicina and Noto Radioastronomical Stations of the Istituto Nazionale di Astrofisica (INAF) - Istituto di Radioastronomia (IRA) includes observations of spacecraft by satellite and satellite by satellite events. The Lunar Radio Occultation (LRO) part of the program consists in collecting data of the lunar Total Electron Content (TEC), at different limb longitudes and at different time, in order to study long term variation of the Moon's ionosphere. The LRO program started at Medicina in September 2006 with the observation of the European probe SMART-1 during its impact on the lunar soil. It proceeded in 2007 with the observation of the lunar occultations of Saturn and Venus, and with the observation of Mars in 2008. On this occasion the probes Cassini, Venus Express, Mars Express, Mars Reconaissance Orbiter and Mars Odissey were respectively occulted by the moon. On Dec 1st 2008 a Venus lunar occultation occurred. On that occasion we performed the first Italian-VLBI (I-VLBI) tracking experiment by detecting the carrier signals coming from the Venus Express (VEX) spacecraft with both the IRA radiotelescopes together with the Matera antenna of the Italian Space Agency. The second part of the radio occultation program includes the observation of satellite by satellite occultation events, as well as mutual occultations of Jupiter satellites. These events are referred to as mutual phenomena (PHEMU). These observations are aimed to measure the radio flux variation during the occultation and to derive surface spatial characteristics such as Io's hot spots. In this work preliminary results of the Radio Occultation program will be presented.

  17. IUE/IRA system description

    Science.gov (United States)

    Jennings, J.

    1977-01-01

    The IUE/IRA rate sensor system designed to meet the requirements of the International Ultraviolet Explorer spacecraft mission is described. The system consists of the sensor unit containing six rate sensor modules and the electronic control unit containing the rate sensor support electronics and the command/control circuitry. The inertial reference assembly formed by the combined units will provide spacecraft rate information for use in the stabilization and control system. The system is described in terms of functional description, operation redundancy performance, mechanical interface, and electrical interface. Test data obtained from the flight unit are summarized.

  18. The IRAS Galaxy Atlas (IGA)

    Science.gov (United States)

    Prince, Thomas A.; Oliversen, R. (Technical Monitor)

    1999-01-01

    In 1993 we proposed a project to NASA having the goal of producing a new infrared map of our Galaxy. In particular, we proposed to reprocess the IRAS data taken in the early 1980's using modern image processing algorithms and the large Intel parallel computers of the Center for Advanced Computing Research, (at that time called the Caltech Concurrent Supercomputing Facilities - CCSF). The rationale was simple: what took approximately 100 days on a typical workstation would take less than a day on the multi-processor parallel computers, thus making a high-resolution infrared atlas of the Galaxy feasible.

  19. Applying the Support Vector Machine Method to Matching IRAS and SDSS Catalogues

    Directory of Open Access Journals (Sweden)

    Chen Cao

    2007-10-01

    Full Text Available This paper presents results of applying a machine learning technique, the Support Vector Machine (SVM, to the astronomical problem of matching the Infra-Red Astronomical Satellite (IRAS and Sloan Digital Sky Survey (SDSS object catalogues. In this study, the IRAS catalogue has much larger positional uncertainties than those of the SDSS. A model was constructed by applying the supervised learning algorithm (SVM to a set of training data. Validation of the model shows a good identification performance (∼ 90% correct, better than that derived from classical cross-matching algorithms, such as the likelihood-ratio method used in previous studies.

  20. Newly Identified Silicate Carbon Stars from IRAS Low-Resolution Spectra

    Institute of Scientific and Technical Information of China (English)

    Pei-Sheng Chen; Pin Zhang

    2006-01-01

    The discovery of silicate carbon star poses a challenge to the theory of stellar evolution in the late stage, hence it is important to look for more silicate carbon stars. To this end we have carried out cross-identifications between the new IRAS Low-Resolution Spectrum (LRS) database and the new carbon star catalog, CGCS3. We have found nine new silicate carbon stars with silicate features around 10μm and/or 18 μm. These newly identified stars are located in the Regions Ⅲa and Ⅶ in the IRAS two-color diagram, which means they indeed have typical far infrared colors of silicate carbon stars. The infrared properties of each of these sources are discussed.

  1. Simulating Our Cosmological Neighborhood: Mock Catalogs for Velocity Analysis

    OpenAIRE

    Kolatt, Tsafrir; Dekel, Avishai; Ganon, Galit; Willick, Jeffrey

    1995-01-01

    We describe the construction of an N-body simulation that mimics the true velocity and mass-density fields in a box of side 256\\hmpc about the Local Group , and the production of mock catalogs that mimic in detail current catalogs of redshifts and peculiar velocities. Our main purpose is to provide a tool for developing and testing reconstruction methods, but the different components of the method can be used on their own in other applications. The initial conditions are based on the IRAS 1.2...

  2. CMR Catalog Service for the Web

    Science.gov (United States)

    Newman, Doug; Mitchell, Andrew

    2016-01-01

    With the impending retirement of Global Change Master Directory (GCMD) Application Programming Interfaces (APIs) the Common Metadata Repository (CMR) was charged with providing a collection-level Catalog Service for the Web (CSW) that provided the same level of functionality as GCMD. This talk describes the capabilities of the CMR CSW API with particular reference to the support of the Committee on Earth Observation Satellites (CEOS) Working Group on Information Systems and Services (WGISS) Integrated Catalog (CWIC).

  3. 26 CFR 1.408A-2 - Establishing Roth IRAs.

    Science.gov (United States)

    2010-04-01

    ... 26 Internal Revenue 5 2010-04-01 2010-04-01 false Establishing Roth IRAs. 1.408A-2 Section 1.408A... (CONTINUED) INCOME TAXES Pension, Profit-Sharing, Stock Bonus Plans, Etc. § 1.408A-2 Establishing Roth IRAs... establishing Roth IRAs: Q-1. Who can establish a Roth IRA? A-1. Except as provided in A-3 of this section,...

  4. The High Resolution IRAS Galaxy Atlas

    CERN Document Server

    Cao, Y; Prince, T A; Beichman, C A; Cao, Yu; Terebey, Susan; Prince, Thomas A.; Beichman, Charles A.

    1997-01-01

    An atlas of the Galactic plane (-4.7 deg < b < 4.7 deg) plus the molecular clouds in Orion, Rho Oph, and Taurus-Auriga has been produced at 60 and 100 micron from IRAS data. The Atlas consists of resolution-enhanced coadded images having 1 arcmin -- 2 arcmin resolution as well as coadded images at the native IRAS resolution. The IRAS Galaxy Atlas, together with the DRAO HI line / 21 cm continuum and FCRAO CO (1-0) line Galactic plane surveys, both with similar (approx. 1 arcmin) resolution, provide a powerful venue for studying the interstellar medium, star formation and large scale structure in our Galaxy. This paper documents the production and characteristics of the Atlas.

  5. Properties of IRAS PSC/FSC Galaxies

    Science.gov (United States)

    Abrahamyan, H. V.; Mickaelian, A. M.

    2016-06-01

    Based on IRAS PSC/FSC Joint Catalogue of 345,163 IR sources and their characteristics, we have created a smaple of IRAS-selected candidate galaxies, 145,902 objects (42.3 %). This sample provides a unique opportunity to statistically investigate IR galaxies for many of their physical parameters. For 16,533 galaxies we have SDSS photometric data (ugriz magnitudes and corresponding colors) and almost for all objects we have WISE data. Building color-color diagrams allows understanding the nature of these galaxies and group them into individual subsamples for further detailed studies.

  6. An Updated Ultraviolet Catalog of GALEX Nearby Galaxies

    CERN Document Server

    Bai, Yu; Liu, JiFeng; Wang, Song

    2015-01-01

    The ultraviolet catalog of nearby galaxies made by \\citet{Gil07} presents the integrated photometry and surface brightness profiles for 1034 nearby galaxies observed by \\textit{Galaxy Evolution Explorer} (\\textit{GALEX}). We provide an updated catalog of 4138 nearby galaxies based on the latest Genral Release (GR6/GR7) of \\textit{GALEX}. These galaxies are selected from HyperLeda with apparent diameter larger than 1{\\arcmin}. From the surface brightness profiles accurately measured with the deep NUV and FUV images, we have calculated asymptotic magnitudes, aperture (D25) magnitudes, colors, structural parameters (effective radii and concentration indices), luminosities, and effective surface brightness. Archival optical and infrared photometry from HyperLeda, 2MASS, and IRAS are also integrated into the catalog. Our parameter measurements and some analyses are consistent with those of \\citet{Gil07}. The (FUV $- K$) color provides a good criterion to distinguish early and late-type galaxies, which can be impro...

  7. Infrared two-colour diagrams for AGB stars using AKARI, MSX, IRAS and NIR data

    CERN Document Server

    Suh, Kyung-Won

    2011-01-01

    Using a revised version of the catalog of AGB stars by Suh & Kwon (2009), we present various infrared two-colour diagrams (2CDs) for 3003 O-rich, 1168 C-rich, 362 S-type and 35 silicate carbon stars in our Galaxy. For each object in the new catalog, we cross-identify the AKARI, MSX and 2MASS counterparts by finding the nearest one from the position information in the IRAS PSC. For the large sample of AGB stars, we present infrared two-colour diagrams using IRAS (PSC), AKARI (PSC and BSC), MSX (PSC) and near infrared (K and L bands; including 2MASS data at KS band) data for different classes of AGB stars based on the chemistry of the dust shell and/or the central star. The infrared 2CDs of AGB stars can provide useful information about the structure and evolution of the dust envelopes as well as the central stars. On the 2CDs, we plot tracks of the theoretical radiative transfer model results with increasing dust shell optical depths. Comparing the observations with the theoretical models on the new 2CDs, ...

  8. Ira P. Gunn: educator, advocate, legend.

    Science.gov (United States)

    McAuliffe, Maura S; Koch, Faan Kathy J

    2011-12-01

    This column examines the contributions of nurse anesthetist Ira P. Gunn, CRNA, MLN, FAAN (1927-2011), widely recognized as a visionary and tireless advocate for the profession of nurse anesthesia. Her contributions to nurse anesthesia practice, research, education, publication, consultation, credentialing, and government relations have significantly contributed to the preservation and advancement of nursing and nurse anesthesia.

  9. IMAGE CONSTRUCTION FROM THE IRAS SURVEY

    NARCIS (Netherlands)

    BONTEKOE, TR; KESTER, DJM; PRICE, SD; DEJONGE, ARW; WESSELIUS, PR

    IRAS survery data can be used successfully to produce images of extended objects. The major difficulties, viz. non-uniform sampling, different response functions for each detector, and varying signal-to-noise levels for each detector for each scan, have been resolved. The results of three different

  10. An Essential Function of the N-Terminus of Ira/Neurofibromin

    Science.gov (United States)

    2006-01-01

    complement the ira1∆ phenotype through library screening . BODY: Task1. Determine the regions in Ira1, Ira2 and neurofibromin that are able to...Isolate novel genes that can complement the ira1∆ phenotype through library screening . a. Transform a yeast library into the haploid IRA1* strain

  11. 26 CFR 1.408(q)-1 - Deemed IRAs in qualified employer plans.

    Science.gov (United States)

    2010-04-01

    ... the requirements applicable to Roth IRAs under section 408A, the account or annuity is deemed to be a Roth IRA. Simplified employee pensions (SEPs) under section 408(k) and SIMPLE IRAs under section 408(p... traditional and Roth IRAs may be imposed on distributions from deemed IRAs (for example, early...

  12. Proof of Ira Gessel's lattice path conjecture

    Science.gov (United States)

    Kauers, Manuel; Koutschan, Christoph; Zeilberger, Doron

    2009-01-01

    We present a computer-aided, yet fully rigorous, proof of Ira Gessel's tantalizingly simply stated conjecture that the number of ways of walking 2n steps in the region x + y ≥ 0,y ≥ 0 of the square lattice with unit steps in the east, west, north, and south directions, that start and end at the origin, equals 16n(5/6)n(1/2)n(5/3)n(2)n.

  13. A Halo Model of Local IRAS Galaxies Selected at 60 Micron Using Conditional Luminosity Functions

    CERN Document Server

    Wang, Lingyu; Oliver, Seb

    2010-01-01

    Using conditional luminosity functions (CLFs) which encode the luminosity distribution of galaxies as a function of halo mass, we construct a halo model of IRAS galaxies selected at 60 micron. An abundance matching technique is used to link galaxy luminosity to the host halo mass. The shape of the mass - light relation at 60 micron is different from those derived at r-, K- and B-band. This is because the 60 micron LF can not be fitted by a Schechter function with a sharp exponential cutoff. We then seek the parameters in the CLFs that best fit the LF and power spectrum. We find that the predicted galaxy bias as a function of L60 from the best-fit model agrees well with the clustering measurements. At the faint end of the LF where quiescent star-forming galaxies dominate, most IRAS galaxies are central galaxies in halos of M >~ 10^{10} h^{-1} M_sun but a non-negligible fraction are satellites typically hosted in more massive halos. The majority of IRAS galaxies with L60 >~ 10^{10} h^{-2} L_sun are M82 type sta...

  14. The Revised Version of Class I Methanol Maser Catalog

    CERN Document Server

    Val'tts, I E; Bayandina, O S

    2010-01-01

    The revised version of the class I methanol maser catalog is presented. It contains 182 sources - new class I methanol masers detected in the direction of EGOs were added to the previous number (~160 sources have been published in the first version of this catalog - see reference in the text). Electronic version has been generated in the form of html file - http://www.asc.rssi.ru/MMI. A statistical analysis was carried out within 2' around a maser position to find an identification of class I methanol masers with any objects typical for star-forming regions - UCHII regions, IRAS sources, bipolar outflows, CS lines as of dense gas tracer, masers (class II methanol masers, OH and H2O) and EGO. None of the bipolar outflow, already registered in the direction of class I methanol maser, did not coincide with EGO. The result is submitted in a form of a diagram.

  15. Science operations management. [with Infrared Astronomy Satellite project

    Science.gov (United States)

    Squibb, G. F.

    1984-01-01

    The operation teams engaged in the IR Astronomical Satellite (IRAS) project included scientists from the IRAS International Science Team. The detailed involvement of these scientists in the design, testing, validation, and operations phases of the IRAS mission contributed to the success of this project. The Project Management Group spent a substantial amount of time discussing science-related issues, because science team coleaders were members from the outset. A single scientific point-of-contact for the Management Group enhanced the depth and continuity of agreement reached in decision-making.

  16. Asteroid magnitudes, UBV colors, and IRAS albedos and diameters

    Science.gov (United States)

    Tedesco, Edward F.

    1989-01-01

    This paper lists absolute magnitudes and slope parameters for known asteroids numbered through 3318. The values presented are those used in reducing asteroid IR flux data obtained with the IRAS. U-B colors are given for 938 asteroids, and B-V colors are given for 945 asteroids. The IRAS albedos and diameters are tabulated for 1790 asteroids.

  17. Generation and Characterization of Novel Human IRAS Monoclonal Antibodies

    Directory of Open Access Journals (Sweden)

    Bo Wang

    2009-01-01

    Full Text Available Imidazoline receptors were first proposed by Bousquet et al., when they studied antihypertensive effect of clonidine. A strong candidate for I1R, known as imidazoline receptor antisera-selected protein (IRAS, has been cloned from human hippocampus. We reported that IRAS mediated agmatine-induced inhibition of opioid dependence in morphine-dependent cells. To elucidate the functional and structure properties of I1R, we developed the newly monoclonal antibody against the N-terminal hIRAS region including the PX domain (10–120aa through immunization of BALB/c mice with the NusA-IRAS fusion protein containing an IRAS N-terminal (10–120aa. Stable hybridoma cell lines were established and monoclonal antibodies specifically recognized full-length IRAS proteins in their native state by immunoblotting and immunoprecipitation. Monoclonal antibodies stained in a predominantly punctate cytoplasmic pattern when applied to IRAS-transfected HEK293 cells by indirect immunofluorescence assays and demonstrated excellent reactivity in flow immunocytometry. These monoclonal antibodies will provide powerful reagents for the further investigation of hIRAS protein functions.

  18. Commentary: An Exchange of Views on IRA and Reading Methods.

    Science.gov (United States)

    Groff, Patrick; And Others

    1980-01-01

    Groff argues against an IRA (International Reading Association) position statement assertion that no single method is the best for teaching reading, claiming that the phonics method results in the greatest reading achievement. The IRA Board of Directors replies that the position statement appropriately reflects the diverse views about reading held…

  19. Teaching with IRA in the Mwanza Region of Tanzania

    Science.gov (United States)

    McDermott, Peter

    2010-01-01

    This is a descriptive self-study of my experience participating in IRA's Diagnostic Teaching Project in Tanzania. The paper describes the teacher educators with whom I worked, their responses to IRA's curriculum, and what I learned about Tanzanian people, culture and education. Data are derived from a Likert survey, an open-item questionnaire, and…

  20. IRAS observations of the diffuse infrared background

    Science.gov (United States)

    Hauser, M. G.; Gillett, F. C.; Low, F. J.; Gautier, T. N.; Beichman, C. A.; Aumann, H. H.; Neugebauer, G.; Baud, B.; Boggess, N.; Emerson, J. P.

    1984-01-01

    IRAS data reveal bright emission from interplanetary dust which dominates the celestial background at 12, 25, and 60 microns except near the galactic plane. At 100 microns, interplanetary dust emission is prominent only near the ecliptic plane; diffuse galactic emission is found over the rest of the sky. At the galactic poles, the observed brightness implies that A(v) is likely to be of order 0.1 mag. The angular variation of the zodiacal emission in the ecliptic plane and in the plane at elongation 90 deg, and an annual modulation of the ecliptic pole brightness, are generally consistent with previously determined interplanetary dust distributions.

  1. IRAS observations of the Pluto-Charon system

    Energy Technology Data Exchange (ETDEWEB)

    Aumann, H.H.; Walker, R.G.

    1987-10-01

    High-signal-to-noise-ratio observations of the Pluto-Charon system at 25, 60, and 100 microns using IRAS are combined with visual-magnitude and mutual-eclipse constraints to evaluate thermal models of Pluto and Charon. These models are consistent with eclipse observation by Dunbar and Tedesco (1986) but not with Reinsch and Pakull (1987). The most likely model for Charon is the standard asteroid model, typical for the icy Galilean and Saturnian satellites. Charon models with a significant atmosphere can be ruled out. Based on currently available radius and albedo constraints, no significant numerical distinction is possible between Pluto models ranging from isothermal spheres with surface emissivity between 0.4 and 0.9. Concerns regarding the viability of an emissivity as low as 0.4 favor the higher-emissivity models. The globally uniform surface temperature of Pluto may thus at present be as low as 45 K, with a methane column abundance of 6.7 cm atm. The most likely models are centered on radii of 1180 and 747 km and albedos of 0.47 and 0.26 for Pluto and Charon, respectively. 21 references.

  2. Spectroscopy of IRAS 02091+6333

    Science.gov (United States)

    Bacher, Arntraud; Emprechtinger, Martin; Grömer, Gernot E.; Kapferer, Wolfgang; Kausch, Wolfgang; Kimeswenger, Stefan; Kitzbichler, Manfred G.; Lechner, Michaela F. M.; Lederle, Cornelia

    2003-07-01

    We present a detailed spectroscopic investigation, spanning four winters, of the asymptotic giant branch star IRAS 02091+6333. Zijlstra & Weinberger (2002) found a giant wall of dust around this star and modelled this unique phenomenon. However their work suffered from the quality of the optical investigations of the central object. They could use only a single quick look spectrum and the original TYCHO Bt and Vt magnitudes to estimate the spectral type and the interstellar extinction towards the target. Thus we obtained spectra and photometry at the Innsbruck 60cm telescope (Kimeswenger 2001) of this unique object for several years to derive an accurate spectral type and the foreground extinction. This allowed us to determine more precisely the distance to the target which is important for the modelling of the dust shell found on IRAS images. Zijlstra & Weinberger (2002) outline such shells for various types of objects at late stages of their evolution. Their focus was especially on a swept up shell with a void in the interstellar matter around the target. This is crucial for both, the "Swiss cheese" like structure of the interstellar material and for the hydrodynamic evolution of the planetary nebula built after the current evolutionary stage. The measurements presented here suggest a weak irregular photometric variability of the target, while there is no evidence of a spectroscopic variability over the last four years.

  3. The power spectrum of IRAS galaxies

    CERN Document Server

    Tadros, H; Tadros, Helen; Efstathiou, George

    1995-01-01

    We estimate the three-dimensional power spectrum of IRAS galaxies from the QDOT and 1.2Jy redshift surveys. We use identical estimators for both surveys and show how the results depend on the weights assigned to the galaxies. The power spectrum for the QDOT survey is steeper and has a higher amplitude at wavenumbers k \\sim 0.05\\; h {\\rm Mpc}^{-1} (where h is Hubble's constant in units of 100 \\kmsmpc) than the power spectrum derived from the 1.2Jy sample. However, the QDOT power spectrum is sensitive to a small number of galaxies in the Hercules supercluster, in agreement with a recent analysis of galaxy counts in cells in these surveys. We argue that the QDOT results are an upward fluctuation. We combine the two surveys to derive our best estimate of the power spectrum of IRAS galaxies. This is shallower and has a lower amplitude on scales \\simlt 0.1 h {\\rm Mpc}^{-1} than the power spectrum derived by Feldman \\et (1994) from the QDOT survey alone. The power spectrum of the combined surveys is well described b...

  4. Federating Metadata Catalogs

    Science.gov (United States)

    Baru, C.; Lin, K.

    2009-04-01

    The Geosciences Network project (www.geongrid.org) has been developing cyberinfrastructure for data sharing in the Earth Science community based on a service-oriented architecture. The project defines a standard "software stack", which includes a standardized set of software modules and corresponding service interfaces. The system employs Grid certificates for distributed user authentication. The GEON Portal provides online access to these services via a set of portlets. This service-oriented approach has enabled the GEON network to easily expand to new sites and deploy the same infrastructure in new projects. To facilitate interoperation with other distributed geoinformatics environments, service standards are being defined and implemented for catalog services and federated search across distributed catalogs. The need arises because there may be multiple metadata catalogs in a distributed system, for example, for each institution, agency, geographic region, and/or country. Ideally, a geoinformatics user should be able to search across all such catalogs by making a single search request. In this paper, we describe our implementation for such a search capability across federated metadata catalogs in the GEON service-oriented architecture. The GEON catalog can be searched using spatial, temporal, and other metadata-based search criteria. The search can be invoked as a Web service and, thus, can be imbedded in any software application. The need for federated catalogs in GEON arises because, (i) GEON collaborators at the University of Hyderabad, India have deployed their own catalog, as part of the iGEON-India effort, to register information about local resources for broader access across the network, (ii) GEON collaborators in the GEO Grid (Global Earth Observations Grid) project at AIST, Japan have implemented a catalog for their ASTER data products, and (iii) we have recently deployed a search service to access all data products from the EarthScope project in the US

  5. National Archives Catalog and API

    Data.gov (United States)

    National Archives and Records Administration — The National Archives Catalog is the online catalog of NARA's nationwide holdings in the Washington, DC area, Regional Archives, and Presidential Libraries.

  6. Enriching the Catalog

    Science.gov (United States)

    Tennant, Roy

    2004-01-01

    After decades of costly and time-consuming effort, nearly all libraries have completed the retrospective conversion of their card catalogs to electronic form. However, bibliographic systems still are really not much more than card catalogs on wheels. Enriched content that Amazon.com takes for granted--such as digitized tables of contents, cover…

  7. Decision Points in Cataloging.

    Science.gov (United States)

    Bright, Franklyn F.

    Libraries are frequently faced with policy decisions which can affect the quality and cost of library services for years to come. This point can be illustrated by citing examples of decisions made at the University of Wisconsin Library in the areas of: (1) conforming to national cataloging standards; (2) producing catalog cards in-house; and (3)…

  8. Catalog of Research Reports

    Science.gov (United States)

    College Board, 2011

    2011-01-01

    This catalog lists research reports, research notes, and other publications available from the College Board's website. The catalog briefly describes research publications available free of charge. Introduced in 1981, the Research Report series includes studies and reviews in areas such as college admission, special populations, subgroup…

  9. 26 CFR 1.408A-4 - Converting amounts to Roth IRAs.

    Science.gov (United States)

    2010-04-01

    ... 26 Internal Revenue 5 2010-04-01 2010-04-01 false Converting amounts to Roth IRAs. 1.408A-4... amounts to Roth IRAs. This section sets forth the following questions and answers that provide rules applicable to Roth IRA conversions: Q-1. Can an individual convert an amount in his or her traditional IRA...

  10. [The role of IRA B cells in selected inflammatory processes].

    Science.gov (United States)

    Zasada, Magdalena; Rutkowska-Zapała, Magdalena; Lenart, Marzena; Kwinta, Przemko

    2016-03-16

    The first report about the discovery of new, previously unknown immune cells named IRA B cells (innate response activator B cells) appeared in 2012. So far, their presence has been verified in both mice and humans. However, IRA B cells belong to the family of B lymphocytes and have a number of characteristics unique to this group of cells. IRA B cells are formed from activated B1a lymphocytes after their contact with a pathogen. B1a lymphocytes mainly reside within body cavities. Activated by the pathogen, they move on into secondary lymphoid organs (spleen, lymph nodes) where they differentiate into IRA B cells. IRA B cells are a rich source of granulocyte-macrophage colony stimulating factor (GM-CSF). GM-CSF can stimulate IRA B cells in an autocrine manner for the secretion of intracellular stocks of immunoglobulin M (IgM), which can facilitate pathogens' phagocytosis by neutrophils. GM-CSF also stimulates neutrophils into active phagocytosis. Rapid eradication of the pathogen can prevent the development of an excessive inflammatory response, which can be dangerous for the organism. Until now the involvement of IRA B lymphocytes in the pathogenesis of sepsis and pneumonia has been proven, as well as their role in the progression of atherosclerotic lesions in mice. There is research in progress on the possibility of increasing the number of IRA B cells, for example by intravenous supply of modified immunoglobulins. It is necessary to characterize human IRA B cells and to determine their role in the functioning of the immune system.

  11. 26 CFR 1.408A-1 - Roth IRAs in general.

    Science.gov (United States)

    2010-04-01

    ... 26 Internal Revenue 5 2010-04-01 2010-04-01 false Roth IRAs in general. 1.408A-1 Section 1.408A-1...) INCOME TAXES Pension, Profit-Sharing, Stock Bonus Plans, Etc. § 1.408A-1 Roth IRAs in general. This... Roth IRAs: Q-1. What is a Roth IRA? A-1. (a) A Roth IRA is a new type of individual retirement...

  12. Star-formation knots in IRAS galaxies

    CERN Document Server

    Hutchings, J B

    1995-01-01

    Images of IRAS galaxies with a range of IR properties are examined for bright knots, both within and outside the galaxy. These are found almost exclusively in galaxies with steep IR spectra, but over a wide range of IR luminosity, and usually without strong nuclear activity. In most cases, the knots are likely to be star-formation induced by tidal interactions, and are seen in the early stages of such interactions. Detailed photometry is presented of knots in six representative galaxies. The knots appear to have a wide range of colour and luminosity, but it is argued that many are heavily reddened. Knots formed outside the parent galaxy may be a new generation of what later become globular clusters, but they appear to have a wide range of luminosities.

  13. Ira Remsen, saccharin, and the linear model.

    Science.gov (United States)

    Warner, Deborah J

    2008-03-01

    While working in the chemistry laboratory at Johns Hopkins University, Constantin Fahlberg oxidized the 'ortho-sulfamide of benzoic acid' and, by chance, found the result to be incredibly sweet. Several years later, now working on his own, he termed this stuff saccharin, developed methods of making it in quantity, obtained patents on these methods, and went into production. As the industrial and scientific value of saccharin became apparent, Ira Remsen pointed out that the initial work had been done in his laboratory and at his suggestion. The ensuing argument, carried out in the courts of law and public opinion, illustrates the importance of the linear model to scientists who staked their identities on the model of disinterested research but who also craved credit for important practical results.

  14. Optical Spectroscopy of IRAS 02091+6333

    CERN Document Server

    Kimeswenger, S; Emprechtinger, M; Groemer, G E; Kapferer, W; Kausch, W; Kitzbichler, M G; Lechner, M F M; Lederle, C; Uytterhoeven, K; Zijlstra, A A

    2003-01-01

    We present a detailed spectroscopic investigation, spanning four winters, of the asymptotic giant branch (AGB) star IRAS 02091+6333. Zijlstra & Weinberger (2002) found a giant wall of dust around this star and modelled this unique phenomenon. However their work suffered from the quality of the optical investigations of the central object. Our spectroscopic investigation allowed us to define the spectral type and the interstellar foreground extinction more precisely. Accurate multi band photometry was carried out. This provides us with the possibility to derive the physical parameters of the system. The measurements presented here suggest a weak irregular photometric variability of the target, while there is no evidence of a spectroscopic variability over the last four years.

  15. IRAS observations of cepheid variable stars

    Science.gov (United States)

    Wayman, P. A.; Deasy, H. P.

    1986-09-01

    Mass loss from cepheids is investigated in terms of the evolution and pulsation of cepheids. IR Point Source Catalogue data on galactic cepheids and nonvariable supergiants from IRAS (1985) are analyzed in terms of dereddened colors. The positions on two-color diagrams are compared to black-body curve positions. It is observed that nonvariable supergiants similar to cepheids and short-period cepheids are closely related to black-body objects. Analysis of the mass loss, which is estimated as about 10 to the -6th solar masses/yr, indicates that mass loss is associated with cepheid pulsation; however, the effect of mass loss in the course of stellar evolution from the cepheid phase is insignificant.

  16. The guide star catalog

    Science.gov (United States)

    Lasker, Barry M.; Jenkner, Helmut; Russell, Jane L.

    1987-01-01

    Part 1 of the catalog presents an astronomical overview of the Guide Star Catalog, together with its history, the properties of its current implementation, and the prospects for enhancement. Part 2 presents the algorithms used in photometric and astrometric calibration of the catalog, as well as the analyses of the related errors. Part 3 presents the current structure and content, as well as future enhancements in this area. An overview of the forthcoming publications is given, both with regard to scientific papers and electronic media.

  17. Lunar Map Catalog

    Data.gov (United States)

    National Aeronautics and Space Administration — The Lunar Map Catalog includes various maps of the moon's surface, including Apollo landing sites; earthside, farside, and polar charts; photography index maps; zone...

  18. Stardust Sample Catalog

    Data.gov (United States)

    National Aeronautics and Space Administration — This Catalog summarizes the samples examined in the course of the Preliminary Examination (PE) Team (PET) of the Stardust Mission to comet Wild 2, and the results of...

  19. High Resolution WFPC2 Imaging of IRAS 09104+4109

    CERN Document Server

    Armus, L; Neugebauer, G

    1999-01-01

    With a infrared luminosity of nearly 10^13 Lsuns, IRAS 09104+4109 is the most luminous galaxy with z<0.5 in the IRAS All Sky Survey. A radio-loud Seyfert 2 type optical spectrum, a cD host galaxy in a rich cluster, and a massive cooling flow make IRAS 09104+4109 unique among ultraluminous infrared galaxies. Cannibalized cluster members and the cooling intercluster medium may contribute both the fuel and the dust needed to re-radiate the power of IRAS 09104+4109 into the far-infrared. We have imaged IRAS 09104+4109 in the WFPC2 F622W, F814W, and FR680N filters on the HST to obtain rest frame 4300A, 5700A, and [OIII] emission line images on sub-kpc scales. IRAS 09104+4109 displays a complex morphology on the smallest scales, with radiating filaments, an asymmetric [OIII] nebula, and a number of very faint, irregular blue objects surrounding the cD galaxy. We discuss the nature and possible interplay between the enshrouded QSO nucleus, the cD host galaxy and the irregular cluster.

  20. HS3 Data Catalog

    Science.gov (United States)

    Emory, Amber Elizabeth; Chirica, Dan Cristian; Doyle, Jim

    2013-01-01

    This presentation covered the original plan for the Hurricane and Severe Storm Sentinel (HS3) Data Catalog available through the ESPO HS3 mission page (http://espo.nasa.gov/missions/hs3/) and provided examples of Model Products, Operational Products, and Research (Instrument) Products from the 2012 field campaign. The presentation also covered lessons learned and suggested improvements to the Data Catalog for the upcoming 2013 HS3 field campaign.

  1. The WISE Catalog of Galactic HII Regions

    CERN Document Server

    Anderson, L D; Balser, Dana S; Cunningham, V; Wenger, T V; Johnstone, B M; Armentrout, W P

    2013-01-01

    Using data from the all-sky Wide-Field Infrared Survey Explorer (WISE) satellite, we made a catalog of over 8000 Galactic HII regions and HII region candidates by searching for their characteristic mid-infrared (MIR) morphology. WISE has sufficient sensitivity to detect the MIR emission from HII regions located anywhere in the Galactic disk. We believe this is the most complete catalog yet of regions forming massive stars in the Milky Way. Of the ~8000 cataloged sources, ~1500 have measured radio recombination line (RRL) or H$\\alpha$ emission, and are thus known to be HII regions. This sample improves on previous efforts by resolving HII region complexes into multiple sources and by removing duplicate entries. There are ~2500 candidate HII regions in the catalog that are spatially coincident with radio continuum emission. Our group's previous RRL studies show that ~95% of such targets are HII regions. We find that ~500 of these candidates are also positionally associated with known HII region complexes, so th...

  2. Radio spectra of the WMAP catalog sources

    CERN Document Server

    Trushkin, S A

    2003-01-01

    Compiled radio spectra are presented for 208 extragalactic sources from the catalog created from the WMAP satellite all-sky survey data in a range of 23-94 GHz taken during the first year of its operation in orbit. 205 out of 208 WMAP sources are reliably identified with radio sources from other catalogs, including also four out of five sources unidentified by the WMAP survey authors. We have found 203 WMAP sources to have optical identification: 141 quasars, 29 galaxies, 19 active galactic nuclei, 19 BL Lac-type objects and one planetary nebula, IC418. Simultaneous measurements of flux densities for 26 sources at five frequencies, 2.3, 3.9, 7.7, 11.2 and 21.7 GHz, were made with the radio telescope RATAN-600 in 2003 March. 25 sources were detected at all the frequencies, and only one, WMAP0517-0546, unidentified in other catalogs was not detected in our observations and is likely to be spurious. Using the database CATS we found a large number of identifications in different radio catalogs and in several long...

  3. VizieR Online Data Catalog: JHK photometry near IRAS 06145+1455 (Brand+, 2007)

    Science.gov (United States)

    Brand, J.; Wouterloot, J. G. A.

    2007-09-01

    The data presented here were obtained on February 15, 1995, with the ESO 2.2-m telescope at La Silla (Chile). Images in J, H, and K-bands were taken with the IRAC-2 camera and objective C, which resulted in a scale of 0.49"/pixel. (1 data file).

  4. AN UPDATED ULTRAVIOLET CATALOG OF GALEX NEARBY GALAXIES

    Energy Technology Data Exchange (ETDEWEB)

    Bai, Yu; Zou, Hu; Liu, JiFeng; Wang, Song, E-mail: ybai@nao.cas.cn, E-mail: zouhu@nao.cas.cn, E-mail: jfliu@nao.cas.cn, E-mail: songw@nao.cas.cn [Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, 20A Datun Road, Chaoyang Distict, 100012 Beijing (China)

    2015-09-15

    The ultraviolet (UV) catalog of nearby galaxies compiled by Gil de Paz et al. presents the integrated photometry and surface brightness profiles for 1034 nearby galaxies observed by GALEX. We provide an updated catalog of 4138 nearby galaxies based on the latest Genral Release (GR6/GR7) of GALEX. These galaxies are selected from HyperLeda with apparent diameters larger than 1′. From the surface brightness profiles accurately measured using the deep NUV and FUV images, we have calculated the asymptotic magnitudes, aperture (D25) magnitudes, colors, structural parameters (effective radii and concentration indices), luminosities, and effective surface brightness for these galaxies. Archival optical and infrared photometry from HyperLeda, 2MASS, and IRAS are also integrated into the catalog. Our parameter measurements and some analyses are consistent with those of Paz et al. The (FUV − K) color provides a good criterion to distinguish between early- and late-type galaxies, which can be improved further using the concentration indices. The IRX–β relation is reformulated with our UV-selected nearby galaxies.

  5. Spectroscopic variability of IRAS22272+5435

    CERN Document Server

    Začs, L; Kaminsky, B; Pavlenko, Y; Grankina, A; Sperauskas, J; Hrivnak, B J

    2015-01-01

    A time series of high-resolution spectra was observed in the optical wavelength region for the bright proto-planetary nebula IRAS22272+5435 (HD235858), along with a simultaneous monitoring of its radial velocity and $BVR_C$ magnitudes. The object is known to vary in light, color, and velocity due to pulsation with a period of 132 days. The light and color variations are accompanied by significant changes in spectral features, most of which are identified as lines of carbon-bearing molecules. According to the observations, the $C_2$ Swan system and CN Red system lines are stronger near the light minimum. A photospheric spectrum of the central star was calculated using new self-consistent atmospheric models. The observed intensity variations in the $C_2$ Swan system and CN Red system lines were found to be much larger than expected if due solely to the temperature variation in the atmosphere of the pulsating star. In addition, the molecular lines are blueshifted relative to the photospheric velocity. The site o...

  6. SPECTROSCOPIC VARIABILITY OF IRAS 22272+5435

    Energy Technology Data Exchange (ETDEWEB)

    Začs, Laimons; Grankina, Aija [Laser Center, University of Latvia, Raiņa bulvāris 19, LV-1586 Rıga (Latvia); Musaev, Faig [Special Astrophysical Observatory of the Russian AS, Nizhnij Arkhyz, 369167 (Russian Federation); Kaminsky, Bogdan; Pavlenko, Yakiv [Main Astronomical Observatory of Academy of Sciences of Ukraine, Zabolotnoho 27, Kyiv, 03680 (Ukraine); Sperauskas, Julius [Vilnius University Observatory, Čiurlionio 29, Vilnius 2009 (Lithuania); Hrivnak, Bruce J. [Department of Physics and Astronomy, Valparaiso University, Valparaiso, IN 46383 (United States)

    2016-01-01

    A time series of high-resolution spectra was observed in the optical wavelength region for the bright proto-planetary nebula IRAS 22272+5435 (HD 235858), along with a simultaneous monitoring of its radial velocity and BV R{sub C} magnitudes. The object is known to vary in light, color, and velocity owing to pulsation with a period of 132 days. The light and color variations are accompanied by significant changes in spectral features, most of which are identified as lines of carbon-bearing molecules. According to the observations, the C{sub 2} Swan system and CN Red system lines are stronger near the light minimum. A photospheric spectrum of the central star was calculated using new self-consistent atmospheric models. The observed intensity variations in the C{sub 2} Swan system and CN Red system lines were found to be much larger than expected if due solely to the temperature variation in the atmosphere of the pulsating star. In addition, the molecular lines are blueshifted relative to the photospheric velocity. The site of formation of the strong molecular features appears to be a cool outflow triggered by the pulsation. The variability in atomic lines seems to be mostly due variations of the effective temperature during the pulsation cycle. The profiles of strong atomic lines are split, and some of them are variable in a timescale of a week or so, probably because of shock waves in the outer atmosphere.

  7. The Luminosity Function of IRAS PSCz Galaxies

    CERN Document Server

    Takeuchi, T T; Ishii, T T; Takeuchi, Tsutomu T.; Yoshikawa, Kohji; Ishii, Takako T.

    2003-01-01

    We estimated the luminosity function (LF) of IRAS galaxies in the PSCz catalogue. The faint end of the PSCz LF is slightly steeper than that of the LF derived by Saunders et al. (1990; S90). Using an analytical form for the LF used by S90, we obtain the following parameters: \\alpha = 1.23 \\pm 0.04, L_*=(8.85 \\pm 1.75) \\times 10^8 h^{-2} L_\\odot, \\sigma =0.724 \\pm 0.010, and \\phi_* = (2.34 \\pm 0.30) \\times 10^{-2} h^3 Mpc^{-3}. We also examined the evolution in the sample by a simple assumption \\phi_*(z) \\propto (1+z)^P, and found P=3.40 \\pm 0.70. It does not affect the three parameters, \\alpha, L_*, and \\sigma, but \\phi_*(z=0) is overestimated up to \\sim 15% if we ignore evolution. We estimated the temperature dependence of the LF. The LFs of warm and cool galaxies are quite different: the LF of warm galaxies has a very steep faint end with \\alpha =1.37. We also discuss a lump found at the brightest end of the LF.

  8. IRAS-based whole-sky upper limit on Dyson Spheres

    Energy Technology Data Exchange (ETDEWEB)

    Carrigan, Richard A., Jr.; /Fermilab

    2008-09-01

    A Dyson Sphere is a hypothetical construct of a star purposely cloaked by a thick swarm of broken-up planetary material to better utilize all of the stellar energy. A clean Dyson Sphere identification would give a significant signature for intelligence at work. A search for Dyson Spheres has been carried out using the 250,000 source database of the IRAS infrared satellite which covered 96% of the sky. The search has used the Calgary data collection of the IRAS Low Resolution Spectrometer (LRS) to look for fits to blackbody spectra. Searches have been conducted for both pure (fully cloaked) and partial Dyson Spheres in the blackbody temperature region 100 {le} T {le} 600 K. Other stellar signatures that resemble a Dyson Sphere are reviewed. When these signatures are used to eliminate sources that mimic Dyson Spheres very few candidates remain and even these are ambiguous. Upper limits are presented for both pure and partial Dyson Spheres. The sensitivity of the LRS was enough to find solar-sized Dyson Spheres out to 300 pc, a reach that encompasses a million solar-type stars.

  9. IRAS 19135+3937: An SRd variable as interacting binary surrounded by a circumbinary disc

    CERN Document Server

    Gorlova, N; Ikonnikova, N P; Burlak, M A; Komissarova, G V; Jorissen, A; Gielen, C; Debosscher, J; Degroote, P

    2015-01-01

    Semi-regular (SR) variables are not a homogeneous class and their variability is often explained due to pulsations and/or binarity. This study focuses on IRAS 19135+3937, an SRd variable with an infra-red excess indicative of a dusty disc. A time-series of high-resolution spectra, UBV photometry as well as a very accurate light curve obtained by the Kepler satellite, allowed us to study the object in unprecedented detail. We discovered it to be a binary with a period of 127 days. The primary has a low surface gravity and an atmosphere depleted in refractory elements. This combination of properties unambiguously places IRAS 19135+3937 in the subclass of post-Asymptotic Giant Branch stars with dusty discs. We show that the light variations in this object can not be due to pulsations, but are likely caused by the obscuration of the primary by the circumbinary disc during orbital motion. Furthermore, we argue that the double-peaked Fe emission lines provide evidence for the existence of a gaseous circumbinary Kep...

  10. IGRINS spectroscopy of Class I sources: IRAS 03445+3242 and IRAS 04239+2436

    CERN Document Server

    Lee, Seokho; Park, Sunkyung; Lee, Jae-Joon; Kidder, Benjamin; Mace, Gregory N; Jaffe, Daniel T

    2016-01-01

    We have detected molecular and atomic line emission from the hot and warm disks of two Class I sources, IRAS 03445+3242 and IRAS 04239+2436 using the high resolution Immersion GRating INfrared Spectrograph (IGRINS). CO overtone band transitions and near-IR lines of Na I and Ca I, all in emission, trace the hot inner disk while CO rovibrational absorption spectra of the first overtone transition trace the warm gas within the inner few AU of the disk. The emission-line profiles for both sources show evidence for Keplerian disks. A thin Keplerian disk with power-law temperature and column density profiles with a projected rotational velocity of $\\sim$60--75 km s$^{-1}$ and a gas temperature of $\\sim$3500 K at the innermost annulus can reproduce the CO overtone band emission. Na I and Ca I emission lines also arise from this disk, but they show complicated line features possibly affected by photospheric absorption lines. Multi-epoch observations show asymmetric variations of the line profiles on one-year (CO over...

  11. URAT Parallax Catalog (UPC)

    CERN Document Server

    Finch, Charlie

    2016-01-01

    The URAT Parallax Catalog (UPC) consists of 112,177 parallaxes. The catalog utilizes all Northern Hemisphere exposures from the United States Naval Observatory (USNO) Robotic Astrometric Telescope (URAT) obtained between April 2012 and June 2015. Relative parallaxes are converted to absolute using photometric distance estimates of UCAC4 reference stars. There are 2 groups of stars in this catalog: 1) 58,677 stars with prior published trigonometric parallax (Hipparcos, Yale Parallax Catalog, MEarth project and SIMBAD), and 2) 53,500 stars with first time trigonometric parallaxes as obtained from URAT data. More stringent selection criteria have been applied for group 2 then for group 1 in order to keep the rate of false detections low. The mean error in UPC parallaxes is 10.8 and 4.3 mas for groups 1 and 2, respectively. All stars in UPC are north of -13 deg Dec and between 6.5 and 17 mag. The UPC is published by CDS as catalog I/333 and the acronym has been registered with the IAU. The Finch & Zacharias (...

  12. Astronomical Surveys, Catalogs, Databases, and Archives

    Science.gov (United States)

    Mickaelian, A. M.

    2016-06-01

    All-sky and large-area astronomical surveys and their cataloged data over the whole range of electromagnetic spectrum are reviewed, from γ-ray to radio, such as Fermi-GLAST and INTEGRAL in γ-ray, ROSAT, XMM and Chandra in X-ray, GALEX in UV, SDSS and several POSS I and II based catalogues (APM, MAPS, USNO, GSC) in optical range, 2MASS in NIR, WISE and AKARI IRC in MIR, IRAS and AKARI FIS in FIR, NVSS and FIRST in radio and many others, as well as most important surveys giving optical images (DSS I and II, SDSS, etc.), proper motions (Tycho, USNO, Gaia), variability (GCVS, NSVS, ASAS, Catalina, Pan-STARRS) and spectroscopic data (FBS, SBS, Case, HQS, HES, SDSS, CALIFA, GAMA). Most important astronomical databases and archives are reviewed as well, including Wide-Field Plate DataBase (WFPDB), ESO, HEASARC, IRSA and MAST archives, CDS SIMBAD, VizieR and Aladin, NED and HyperLEDA extragalactic databases, ADS and astro-ph services. They are powerful sources for many-sided efficient research using Virtual Observatory tools. Using and analysis of Big Data accumulated in astronomy lead to many new discoveries.

  13. IRAS 14348-1447, an Ultraluminous Pair of Colliding, Gas-Rich Galaxies: The Birth of a Quasar?

    Science.gov (United States)

    Sanders, D B; Scoville, N Z; Soifer, B T

    1988-02-05

    Ground-based observations of the object IRAS 14348-1447, which was discovered with the Infrared Astronomical Satellite, show that it is an extremely luminous colliding galaxy system that emits more than 95 percent of its energy at far-infrared wavelengths. IRAS 14348-1447, which is receeding from the sun at 8 percent of the speed of light, has a bolometric luminosity more than 100 times larger than that of our galaxy, and is therefore as luminous as optical quasars. New optical, infrared, and spectroscopic measurements suggest that the dominant luminosity source is a dustenshrouded quasar. The fuel for the intense activity is an enormous supply of molecular gas. Carbon monoxide emission has been detected at a wavelength of 2.6 millimeters by means of a new, more sensitive receiver recently installed on the 12-meter telescope of the National Radio Astronomy Observatory. IRAS 14348-1447 is the most distant and luminous source of carbon monoxide line emission yet detected. The derived mass of interstellar molecular hydrogen is 6 x 10(10) solar masses. This value is approximately 20 times that of the molecular gas content of the Milky Way and is similar to the largest masses of atomic hydrogen found in galaxies. A large mass of molecular gas may be a prerequisite for the formation of quasars during strong galactic collisions.

  14. Revisions to Contributed Cataloging in a Cooperative Cataloging Database

    Directory of Open Access Journals (Sweden)

    Judith Hudson

    1981-06-01

    Full Text Available OCLC is the largest bibliographic utility in the United States. One of its greates tassets is its computerized database o fstandardized cataloging information. The database, which is built on the principle of shared cataloging, consists of cataloging records input from Library of Congress MARC tapes and records contributed by member libraries.

  15. The Circum-Galactic Environment of Bright IRAS Galaxies

    CERN Document Server

    Krongold, Y

    2002-01-01

    This paper studies systematically, for the first time, the circumgalactic environment of bright IRAS galaxies as defined by Soifer et al. (1989). While the role of gravitational interaction for luminous and ultraluminous IRAS galaxies has been well established by various studies, the situation is by far more obscure in the IR luminosity range of the bright IRAS sample, 10^{10}Lsol 30^{o}. A control sample, selected from the Center for Astrophysics redshift survey catalogue, includes 90 objects matching the Bright IRAS sample for distribution of isophotal diameter, redshift, and morphological type. From a search of nearby companion galaxies within 250 Kpc on the second-generation Digitized Sky Survey (DSS-II), we found that the circumgalactic environment of the Bright IRAS galaxies contains more large companions than the galaxies in the optically selected control sample, and is similar to that of Seyfert 2 galaxies. We found a weak correlation over a wide range of far IR luminosity (10^9 Lsol < Lfir < 1...

  16. A Book Catalog at Stanford

    Directory of Open Access Journals (Sweden)

    Richard D. Johnson

    1968-03-01

    Full Text Available Description of a system for the production of a book catalog for an undergraduate library, using an IBM 1401 Computer (12K storage, 4 tape drives, an expanded print chain on the 1403 Printer, and an 029 Card Punch for input. Described are the conversion of cataloging information into machine readable form, the machine record produced, the computer programs employed, and printing of the catalog. The catalog, issued annually, is in three parts: an author & title catalog, a subject catalog, and a shelf list. Cumulative supplements are issued quarterly. A central idea in the depiction of entries in the catalog is the abandonment of the main entry concept. The alphabetical arrangement of entries is discuessed: sort keys employed, filing order observed, symbols employed to alter this order, and problems encountered. Cost factors involved in the preparation of the catalog are summarized.

  17. FRBRization of a catalog

    Directory of Open Access Journals (Sweden)

    Fernanda Passini Moreno

    2013-03-01

    Full Text Available The FRBR model (Functional Requirements it Bibliographic Records (IFLA, 1998 is changing the way we work with the library catalog. One of the main contributions of this model is the representation of the bibliographic information through relationships between conceptual entities. In this case study we report the experience of converting 83,257 catalog records of the Network Virtual Library - National Congress (RVBI, encoded in the MARC (MAchine Readable Cataloging to a format that organizes the bibliographic information using the FRBR concepts. As a result, information is presented more concisely literature and consequently generates time savings for the user at the time of the query. Moreover, results obtained were not initially expected, for example, identifying inconsistencies in MARC records. The tool "FRBR Display Tool", developed by the U.S. Library of Congress, was instrumental in the experiment reported here.

  18. The Massive Bipolar Outflow in IRAS 20110+3321

    Institute of Scientific and Technical Information of China (English)

    LI Jing-Jing; XU Ye; MIYAZAKI Atsushi; SHEN Zhi-Qiang; CHEN Xi

    2006-01-01

    @@ Mapping observations were made towards IRAS 20110+3321 using the Nobeyama 45 m and the Delingha 13.7m radio telescopes. The high angular resolution (~ 21″) image with the 45m telescope shows that there is a highvelocity bipolar molecular outflow in this region, which is in the NW-SE direction with a collimation factor of ~ 2.2. The outflow has significantly higher mass loss rate and mechanical luminosity than those from low mass YSOs, indicating that the outflow is driven by the IRAS source. A dense massive core was detected by mapping C18O (J= 1 - 0) line in the area with the 13.7m telescope. The IRAS source lies within the core but slightly offsets from its emission peak.

  19. 26 CFR 1.408A-0 - Roth IRAs; table of contents.

    Science.gov (United States)

    2010-04-01

    ... 26 Internal Revenue 5 2010-04-01 2010-04-01 false Roth IRAs; table of contents. 1.408A-0 Section 1... (CONTINUED) INCOME TAXES Pension, Profit-Sharing, Stock Bonus Plans, Etc. § 1.408A-0 Roth IRAs; table of contents. This table of contents lists the regulations relating to Roth IRAs under section 408A of...

  20. 29 CFR 2509.99-1 - Interpretive Bulletin Relating to Payroll Deduction IRAs.

    Science.gov (United States)

    2010-07-01

    ... 29 Labor 9 2010-07-01 2010-07-01 false Interpretive Bulletin Relating to Payroll Deduction IRAs... SECURITY ACT OF 1974 § 2509.99-1 Interpretive Bulletin Relating to Payroll Deduction IRAs. (a) Scope. This... annuities (IRAs) described in section 408(a) or (b) or section 408A of the Internal Revenue Code (the...

  1. 26 CFR 1.408-11 - Net income calculation for returned or recharacterized IRA contributions.

    Science.gov (United States)

    2010-04-01

    ... recharacterized IRA contributions. 1.408-11 Section 1.408-11 Internal Revenue INTERNAL REVENUE SERVICE, DEPARTMENT... Plans, Etc. § 1.408-11 Net income calculation for returned or recharacterized IRA contributions. (a) Net income calculation for returned IRA contributions—(1) General rule. For purposes of...

  2. VLA observations of the "water fountain" IRAS 16552-3050

    OpenAIRE

    Suárez, Olga; Gómez, J. F.; Miranda, L. F.

    2008-01-01

    We present Very Large Array (VLA) observations of the water maser emission towards IRAS 16552-3050. The maser emission shows a velocity spread of ~170 km/s, and a bipolar distribution with a separation between the red and blueshifted groups of ~0.08". These observations and the likely post-AGB nature of the source indicate that IRAS 16552-3050 can be considered as a member of the "water fountain" class of sources (evolved stars showing H2O maser emission with a velocity spread $\\ga$ 100 km/s,...

  3. Greenbook Abstract & Catalog--4.

    Science.gov (United States)

    Coole, Walter A.; And Others

    This catalog is the fourth in a series extending and updating teaching materials previously disseminated through the ERIC system, including the "Greenbook System" of training materials for higher education professionals (ED 103 083-084 and 148 438), Open Classroom Documentation, a procedural manual for an autoinstructional learning…

  4. Cataloging Productivity Quotas.

    Science.gov (United States)

    Payne, Eleanor R.

    The author raises some philosophical and practical objections to establishing cataloging productivity quotas. They are unlikely to have any significant impact when used as planning and evaluation tools by management. Quotas would be counterproductive in a profession that does not lend itself to quantification and places an emphasis on quality of…

  5. Book Catalog Use Study

    Science.gov (United States)

    Sacco, Concetta N.

    1973-01-01

    Technological developments of the past twenty years have resulted in renewed interest in book-form catalogs. Users were surveyed at two libraries to determine that their satisfaction with bibliographical data, entry points, and physical form. (17 references) (Author/DH)

  6. Level II scour analysis for Bridge 13 (IRAVT013300133) on State Route 133, crossing an Ira Brook Tributary, Ira, Vermont

    Science.gov (United States)

    Boehmler, Erick M.

    1996-01-01

    This report provides the results of a detailed Level II analysis of scour potential at structure IRA-VT01330013 on State Route 133 crossing an Ira Brook Tributary, Ira, Vermont (figures 1–8). A Level II study is a basic engineering analysis of the site, including a quantitative analysis of stream stability and scour (U.S. Department of Transportation, 1993). Results of a Level I scour investigation also are included in Appendix E of this report. A Level I investigation provides a qualitative geomorphic characterization of the study site. Information on the bridge, gleaned from Vermont Agency of Transportation (VTAOT) files, was compiled prior to conducting Level I and Level II analyses and is found in Appendix D.

  7. The Gaia Attitude Star Catalog

    Science.gov (United States)

    Smart, R. L.

    2016-04-01

    We describe the Attitude Star Catalog produced for the Gaia mission. This catalog is being used by Gaia for the first on-ground attitude reconstruction. Originally it was simply a subset of the Initial Gaia Source List but this subset did not meet the isolation requirements and it contained a significant number of double entries. As a result during the commissioning phase of Gaia a new generation of this catalog, that better fulfills the attitude reconstruction requirements, was requested. Here we describe the production and properties of this new Attitude Star Catalog. The Attitude Star Catalog was made by combining 7 all sky catalogs and selecting entries based on magnitude, isolation and astrometric precision criteria. The catalog has 8173331 entries with estimates of the positions at 2000, proper motions and magnitudes (Gaia G, Gaia Grvs, red RF & blue BJ) in the magnitude range 7.0 publically available from the CDS Strasbourg and the IGSL web-site.

  8. An Analysis of IRAS Identified Hii Regions and their Radio Properties

    CERN Document Server

    Hughes, V A

    1993-01-01

    To try and confirm the types of object in the list of 2298 potential HII regions identified by Hughes \\& MacLeod from the IRAS Point Source Catalog, we selected a sample of 82 for observing at the VLA. We selected half with values of Y = log(F$_{25}$/F$_{12}$) $\\geq$ 0.8, and for control purposes, half with values of 0.3 $\\leq$ log(F$_{25}$/F$_{12}$) $\\leq$ 0.5. 78 radio sources were detected, and of all the objects, 72\\% had at least one associated radio source. Most of the radio sources had diameters of $<$ 3\\arcsec, which was the limit to the angular resolving power of the survey. Those with larger values of Y had significantly larger values of peak radio, integrated radio, and 100$\\mu$m flux densities than those with smaller Y. Also, they generally had associated masers, and thus were most likely young compact HII regions containing star forming regions. Those with smaller Y tended not to have associated maser activity and are probably older HII regions, or stars with high IR and ionizing radiation...

  9. IRAS 20050+2720: ANATOMY OF A YOUNG STELLAR CLUSTER

    Energy Technology Data Exchange (ETDEWEB)

    Guenther, H. M.; Wolk, S. J.; Spitzbart, B.; Forbrich, J.; Wright, N. J.; Bourke, T. L. [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States); Gutermuth, R. A. [Department of Astronomy, University of Massachusetts, Amherst, MA 01003 (United States); Allen, L. [National Optical Astronomy Observatory, 950 North Cherry Avenue, Tucson, AZ 85719 (United States); Megeath, S. T. [Department of Physics and Astronomy, MS-113, University of Toledo, 2801 W. Bancroft St., Toledo, OH 43606 (United States); Pipher, J. L., E-mail: hguenther@cfa.harvard.edu [Department of Physics and Astronomy, University of Rochester, 500 Wilson Boulevard, Rochester, NY 14627 (United States)

    2012-10-01

    IRAS 20050+2720 is young star-forming region at a distance of 700 pc without apparent high-mass stars. We present results of our multi-wavelength study of IRAS 20050+2720 which includes observations by Chandra and Spitzer, and Two Micron All Sky Survey and UBVRI photometry. In total, about 300 young stellar objects (YSOs) in different evolutionary stages are found. We characterize the distribution of YSOs in this region using a minimum spanning tree analysis. We newly identify a second cluster core, which consists mostly of class II objects, about 10' from the center of the cloud. YSOs of earlier evolutionary stages are more clustered than more evolved objects. The X-ray luminosity function (XLF) of IRAS 20050+2720 is roughly lognormal, but steeper than the XLF of the more massive Orion Nebula complex. IRAS 20050+2720 shows a lower N{sub H}/A{sub K} ratio compared with the diffuse interstellar medium.

  10. The Transitional Disk around IRAS 04125+2902

    CERN Document Server

    Espaillat, C; Powell, D; Feldman, D; Qi, C; Wilner, D; D'Alessio, P

    2015-01-01

    Resolved submillimeter imaging of transitional disks is increasingly revealing the complexity of disk structure. Here we present the first high-resolution submillimeter image of a recently identified transitional disk around IRAS 04125+2902 in the Taurus star-forming region. We measure an inner disk hole of ~20 AU around IRAS 04125+2902 by simultaneously modeling new 880 micron Submillimeter Array (SMA) data along with an existing spectral energy distribution supplemented by new Discovery Channel Telescope (DCT) photometry. We also constrain the outer radius of the dust disk in IRAS~04125+2902 to ~50-60 AU. Such a small dust disk could be attributed to initial formation conditions, outward truncation by an unseen companion, or dust evolution in the disk. Notably, the dust distribution of IRAS 04125+2902 resembles a narrow ring (delta R ~ 35 AU) composed of large dust grains at the location of the disk wall. Such narrow dust rings are also seen in other transitional disks and may be evidence of dust trapping i...

  11. Geothermal innovative technologies catalog

    Energy Technology Data Exchange (ETDEWEB)

    Kenkeremath, D. (ed.)

    1988-09-01

    The technology items in this report were selected on the basis of technological readiness and applicability to current technology transfer thrusts. The items include technologies that are considered to be within 2 to 3 years of being transferred. While the catalog does not profess to be entirely complete, it does represent an initial attempt at archiving innovative geothermal technologies with ample room for additions as they occur. The catalog itself is divided into five major functional areas: Exploration; Drilling, Well Completion, and Reservoir Production; Materials and Brine Chemistry; Direct Use; and Economics. Within these major divisions are sub-categories identifying specific types of technological advances: Hardware; Software; Data Base; Process/Procedure; Test Facility; and Handbook.

  12. Education programs catalog

    Energy Technology Data Exchange (ETDEWEB)

    1994-05-01

    Since its formation in 1977, US DOE has been authorized to support education programs that help ensure an adequate supply of scientists, engineers, and technicians for energy-related research, production activities, and technology transfer. A national conference in 1989 produced a clear vision of the important role that DOE, its facilities, and its 169,000 Federal and contract employees can play in the educational life of their communities and the Nation. Many of the programs listed in this catalog are the result of this new vision; others have existed for many years. Purpose of this catalog is to make all DOE education efforts more widely known so that more teachers, students, and others can benefit. Supporting the hundreds of education programs (precollege, undergraduate, graduate, public) is the network of DOE national laboratories, technology centers, and other research facilities. Brief descriptions of each facility, its programs, and contact information for its education personnel are included.

  13. Infrared and radio study of star forming regions associated with IRAS 19111+1048 and IRAS 19110+1045

    CERN Document Server

    Vig, S; Kulkarni, V K; Ojha, D K; Verma, R P

    2006-01-01

    A multiwavelength study of the star forming regions associated with IRAS 19111+1048 and IRAS 19110+1045 has been carried out. These have been simultaneously mapped in two far infrared bands at lambda_eff ~ 130 and 200 micron with ~1' angular resolution using the TIFR 1-m balloon borne telescope. The radio emission from the ionised gas of these regions has been imaged at 1280, 610 and 325 MHz using the Giant Metrewave Radio Telescope, India. A total of 20 compact radio sources have been detected from the high resolution radio map of IRAS 19111+1048 at 1280 MHz. Assuming these sources to represent exciting zero age main sequence (ZAMS) stars, the initial mass function is found to be quite steep, with the power law index of 5.3+-0.5 for the mass range 14 < m/M_sun < 33. The spectral types of the ZAMS stars inferred independently from the radio and NIR measurements match very well for a good fraction of the radio sources having NIR counterparts. For IRAS 19110+1045 region, seven radio sources have been dete...

  14. The Chandra Source Catalog

    CERN Document Server

    Evans, Ian N; Glotfelty, Kenny J; Anderson, Craig S; Bonaventura, Nina R; Chen, Judy C; Davis, John E; Doe, Stephen M; Evans, Janet D; Fabbiano, Giuseppina; Galle, Elizabeth C; Gibbs, Danny G; Grier, John D; Hain, Roger M; Hall, Diane M; Harbo, Peter N; Xiangqun,; He,; Houck, John C; Karovska, Margarita; Kashyap, Vinay L; Lauer, Jennifer; McCollough, Michael L; McDowell, Jonathan C; Miller, Joseph B; Mitschang, Arik W; Morgan, Douglas L; Mossman, Amy E; Nichols, Joy S; Nowak, Michael A; Plummer, David A; Refsdal, Brian L; Rots, Arnold H; Siemiginowska, Aneta; Sundheim, Beth A; Tibbetts, Michael S; Van Stone, David W; Winkelman, Sherry L; Zografou, Panagoula

    2010-01-01

    The Chandra Source Catalog (CSC) is a general purpose virtual X-ray astrophysics facility that provides access to a carefully selected set of generally useful quantities for individual X-ray sources, and is designed to satisfy the needs of a broad-based group of scientists, including those who may be less familiar with astronomical data analysis in the X-ray regime. The first release of the CSC includes information about 94,676 distinct X-ray sources detected in a subset of public ACIS imaging observations from roughly the first eight years of the Chandra mission. This release of the catalog includes point and compact sources with observed spatial extents <~ 30''. The catalog (1) provides access to the best estimates of the X-ray source properties for detected sources, with good scientific fidelity, and directly supports scientific analysis using the individual source data; (2) facilitates analysis of a wide range of statistical properties for classes of X-ray sources; and (3) provides efficient access to ...

  15. Simulating our cosmological neighborhood mock catalogs for velocity analysis

    CERN Document Server

    Kolatt, T S; Ganon, G; Willick, J; Kolatt, Tsafrir; Dekel, Avishai; Ganon, Galit; Willick, Jeffrey

    1995-01-01

    We describe the construction of an N-body simulation that mimics the true velocity and mass-density fields in a box of side 256\\hmpc about the Local Group , and the production of mock catalogs that mimic in detail current catalogs of redshifts and peculiar velocities. Our main purpose is to provide a tool for developing and testing reconstruction methods, but the different components of the method can be used on their own in other applications. The initial conditions are based on the IRAS 1.2Jy redshift survey, assuming that galaxies trace mass and \\Omega=1. A density field smoothed is recovered from the redshift survey, using quasi-linear theory and a power-preserving filter. The corresponding potential field is traced back to the linear regime using the Zel'dovich-Bernoulli equation. Small-scale power is added by means of constrained realization to mimic fluctuations on galactic scales. The gravitating system is evolved forward in time with a PM code of 2\\hmpc resolution. The result reproduces the real dyna...

  16. VizieR Online Data Catalog: UBVRIJHKLMNQ photometry in Taurus-Auriga (Kenyon+ 1995)

    Science.gov (United States)

    Kenyon, S. J.; Hartmann, L.

    1996-02-01

    Tables A1-A2 list average V and K magnitudes and broadband optical and near-infrared colors for T Tauri stars in the Taurus-Auriga cloud. The quoted errors are 1 sigma dispersions from the average values for objects with 2 or more measurements at V, K, or the appropriate color. For convenience, the authors quote dispersions of 0.00 for objects with only a single measurement. The last columns of Tables A1-A2 list the number of V, K, and N measurements used to compute the average values. The number of data points used to determine average colors is usually close to the number of V or K measurements. Table A3 lists IRAS colors for the Taurus-Auriga sample. For each IRAS source, the authors compiled fluxes from version 2 of the Point Source Catalog, IRAS ADDSCANs, and the IRAS Serendipitous Survey Catalog and averaged fluxes for sources appearing in 2 or 3 catalogs (see section 2 of the printed paper). The authors adopted flux zero points of Fnu(12um)=28.3Jy, Fnu(25um)=6.73Jy, Fnu(60um)=1.19Jy, and Fnu(100um)=0.43Jy to compute IRAS magnitudes and then derived colors using average K magnitudes from Table A2. In some cases, two or more pre-main-sequence stars fall in a typical IRAS beam. The authors summed the K flux of the individual objects to compute a combined K magnitude and color for these IRAS sources. These IRAS colors assume no color correction for the IRAS flux. Table A4 lists various quantities derived from published spectra and the photometry in Tables A1-A3. Infrared colors and the ratio of far-IR to bolometric luminosity set the spectral energy distribution class, SED. The optical spectral type usually was taken from the literature (Herbig & Bell (1988LicOB1111....1H)) or the authors own work. The effective temperature, Teff, is based on compilations by Schmidt-Kaler (1982) and Straizys (1992). The authors estimated optical extinctions, A_V, from comparisons between the observed optical or infrared colors and colors for normal main sequence stars in Table A

  17. The solar flare catalog in the low-energy gamma-ray range based on the AVS-F instrument data onboard the CORONAS-F satellite in 2001-2005

    NARCIS (Netherlands)

    Arkhangelskaja, [No Value; Arkhangelsky, AI; Kotov, YD; Kuznetsov, SN; Glyanenko, AS

    2006-01-01

    TheAVS-F apparatus onboard the CORONAS-F satellite (operated from July 31, 2001, to December 6, 2005) was intended for investigation of solar hard X-ray and gamma-ray radiation and for registration of gamma-ray bursts. The AVS-F apparatus constitutes a system for processing the data from two detecto

  18. The solar flare catalog in the low-energy gamma-ray range based on the AVS-F instrument data onboard the CORONAS-F satellite in 2001-2005

    NARCIS (Netherlands)

    Arkhangelskaja, [No Value; Arkhangelsky, AI; Kotov, YD; Kuznetsov, SN; Glyanenko, AS

    2006-01-01

    TheAVS-F apparatus onboard the CORONAS-F satellite (operated from July 31, 2001, to December 6, 2005) was intended for investigation of solar hard X-ray and gamma-ray radiation and for registration of gamma-ray bursts. The AVS-F apparatus constitutes a system for processing the data from two detecto

  19. Cataloging Expert Systems: Optimism and Frustrated Reality.

    Science.gov (United States)

    Olmstadt, William J.

    2000-01-01

    Discusses artificial intelligence and attempts to catalog expert systems. Topics include the nature of expertise; examples of cataloging expert systems; barriers to implementation; and problems, including total automation, cataloging expertise, priorities, and system design. (LRW)

  20. "Where's the Catalog?" An Introduction.

    Science.gov (United States)

    Rockman, Ilene F.

    1979-01-01

    Introduces three papers presented at the RASD (Reference and Adult Services Division) Catalog Use Committee program--"Where's the Catalog? Automation, AACR 2, and the User"--held at the 1979 American Library Association Annual Conference. The papers address the program's challenges from different perspectives. (Author)

  1. A catalog of stellar spectrophotometry

    Science.gov (United States)

    Adelman, S. J.; Pyper, D. M.; Shore, S. N.; White, R. E.; Warren, W. H., Jr.

    1989-01-01

    A machine-readable catalog of stellar spectrophotometric measurements made with rotating grating scanner is introduced. Consideration is given to the processes by which the stellar data were collected and calibrated with the fluxes of Vega (Hayes and Latham, 1975). A sample page from the spectrophotometric catalog is presented.

  2. A Bayesian classification of the IRAS LRS Atlas

    Science.gov (United States)

    Goebel, J.; Stutz, J.; Volk, K.; Walker, H.; Gerbault, F.; Self, M.; Taylor, W.; Cheeseman, P.

    1989-01-01

    The availability of a reclassification of the IRAS LRS Atlas of spectra using a new Bayesian classification procedure (AutoClass) is announced. The classes of objects which result from the application of the AutoClass algorithm include many of the previously known LRS classes. New classes which have interesting astronomical and astrophysical interpretations were also found. Techniques, such as the AutoClass algorithm, have a bright future in the arena of astronomical classification problems.

  3. Molecular gas associated with IRAS 10361-5830

    CERN Document Server

    Vazzano, M M; Vasquez, J; Rubio, M; Romero, G A; .,

    2014-01-01

    We analyze the distribution of the molecular gas and the dust in the molecular clump linked to IRAS 10361-5830, located in the environs of the bubble-shaped HII region Gum 31 in the Carina region, with the aim of determining the main parameters of the associated material and investigating the evolutionary state of the young stellar objects identified there. Using the APEX telescope, we mapped the molecular emission in the J=3-2 transition of three CO isotopologues, 12CO, 13CO and C18O, over a 1.5' x 1.5' region around the IRAS position. We also observed the high density tracers CS and HCO+ toward the source. The cold dust distribution was analyzed using submillimeter continuum data at 870 \\mu\\ obtained with the APEX telescope. Complementary IR and radio data at different wavelengths were used to complete the study of the ISM. The molecular gas distribution reveals a cavity and a shell-like structure of ~ 0.32 pc in radius centered at the position of the IRAS source, with some young stellar objects (YSOs) proj...

  4. Absolute activity measurement of radon gas at IRA-METAS

    Science.gov (United States)

    Spring, Philippe; Nedjadi, Youcef; Bailat, Claude; Triscone, Gilles; Bochud, François

    2006-12-01

    This paper describes the system of the Swiss national metrological institute (IRA-METAS) for the absolute standardisation of radon gas. This method relies on condensing radon under vacuum conditions within a specified cold area using a cryogenerator, and detecting its alpha particles with an ion-implanted silicon detector, through a very accurately defined solid angle. The accuracy of this defined solid angle standardisation technique was corroborated by another primary measurement method involving 4 πγ NaI(Tl) integral counting and Monte Carlo efficiency calculations. The 222Rn standard submitted by IRA-METAS to the Système International de Référence (SIR) at the Bureau International des Poids et Mesures (BIPM) has also been found to be consistent with an analogous standard submitted by the German national metrological institute (PTB). IRA-METAS is able to deliver radon standards, with activities ranging from a few kBq to 350 kBq, in NIST-Type ampoules, and glass or steel containers usable for calibrating radon-measuring instruments.

  5. VLA Detection of the Exciting Sources of the Molecular Outflows Associated with L1448 IRS2, IRAS 05327+3404, L43, IRAS 22142+5206, L1211, and IRAS 23545+6508

    Directory of Open Access Journals (Sweden)

    G. Anglada

    2002-01-01

    Full Text Available Presentamos observaciones sensitivas hechas con el “Very Large Array" a 3.6 cm hacia nueve campos conteniendo flujos moleculares. Detectamos candidatos para las fuentes excitadoras de flujos moleculares en seis de los campos: L1448 IRS2, IRAS 05327+3404, L43, IRAS 22142+5206, L1211, e IRAS 23545+6508. Discutimos los parámetros de estas fuentes, así como su relación con fuentes detectadas a otras longitudes de onda.

  6. 26 CFR 1.408A-3 - Contributions to Roth IRAs.

    Science.gov (United States)

    2010-04-01

    ... 26 Internal Revenue 5 2010-04-01 2010-04-01 false Contributions to Roth IRAs. 1.408A-3 Section 1... (CONTINUED) INCOME TAXES Pension, Profit-Sharing, Stock Bonus Plans, Etc. § 1.408A-3 Contributions to Roth... contributions to Roth IRAs: Q-1. What types of contributions are permitted to be made to a Roth IRA? A-1....

  7. The Chemical Classification of the AGB Star IRAS 17515-2407

    Institute of Scientific and Technical Information of China (English)

    Pei-Sheng Chen; Pin Zhang

    2003-01-01

    The chemical classification of IRAS 17515-2407 has been debated for a long time. Up to now there are two contenders, oxygen-rich or carbon-rich. We believe that IRAS 17515-2407 is an oxygen-rich source: because (i) it shows the silicate self-absorbed emission; (ii) in the near infrared-IRAS diagram it is located in the oxygen-rich object region and (iii) particularly, it has detected SiO maser emission.

  8. EVN observations of the Ultra Luminous Infrared Galaxies IRAS 23365+3604 and IRAS 07251-0248

    CERN Document Server

    Romero-Cañizales, Cristina; Alberdi, Antxon

    2008-01-01

    We present high-sensitivity, high-resolution images of the Ultraluminous Infrared Galaxies (ULIRG; L$_{\\mathrm{FIR}} > 10^{12}$ L$_\\odot$) IRAS 23365+3604 and IRAS 07251-0248, taken with the EVN at 6 and 18 cm. The images show a large number of compact components, whose luminosities are typical of Type IIL and Type IIn Radio Supernovae (RSNe). Further observations of these ULIRGs will allow us to confirm, or to rule out, their nature. The present observations are part of a project that should result in a significant number of SN detections, providing a direct measurement of the Core Collapse Superova (CCSN) rate and allowing us to estimate the Star Formation Rate (SFR) in our sample of ULIRGs .

  9. Search for Compact Stellar Groups in the Vicinity of IRAS Sources

    CERN Document Server

    Azatyan, N M; Khachatryan, K G

    2016-01-01

    The results of a search for compact clusters in the vicinity of 19 IRAS sources based on data from the GPS UKIDSS and Spitzer GLIMPSE surveys are presented. Overall, clusters have been identified in 15 regions. Clusters are identified for the first time in 4 regions (IRAS 18151-1208, IRAS 18316-0602, 18517+0437, 19110+1045). In 5 regions (IRAS 05168+3634, 05358+3543, IRAS 18507+0121, IRAS 20188+3928, IRAS 20198+3716) the compact groups we have identified are substructures within more extended clusters. The radii of the identified groups and the surface star density are widely scattered with ranges of 0.3-2.7 pc and 4-1360 stars/pc^2, respectively. In 11 of the clusters, the IRAS sources are associated with a pair or even a group of YSOs. The groups identified in the near IR include representatives of a later evolutionary class II among the stellar objects associated with the IRAS sources.

  10. Beyond the 2nd Fermi Pulsar Catalog

    CERN Document Server

    Hou, Xian; Reposeur, Thierry; Rousseau, Romain

    2013-01-01

    Over thirteen times more gamma-ray pulsars have now been studied with the Large Area Telescope on NASA's Fermi satellite than the ten seen with the Compton Gamma-Ray Observatory in the nineteen-nineties. The large sample is diverse, allowing better understanding both of the pulsars themselves and of their roles in various cosmic processes. Here we explore the prospects for even more gamma-ray pulsars as Fermi enters the 2nd half of its nominal ten-year mission. New pulsars will naturally tend to be fainter than the first ones discovered. Some of them will have unusual characteristics compared to the current population, which may help discriminate between models. We illustrate a vision of the future with a sample of six pulsars discovered after the 2nd Fermi Pulsar Catalog was written.

  11. IRAS high resolution studies and modeling of closely interacting galaxies. Galaxy collisions: Infrared observations and analysis of numerical models. UV spectroscopy of massive young stellar populations in interacting galaxies

    Science.gov (United States)

    Lamb, Susan A.

    1993-01-01

    The Final Technical Report covering the period from 15 Aug. 1989 to 14 Aug. 1991 is presented. Areas of research included Infrared Astronomy Satellite (IRAS) high resolution studies and modeling of closely interacting galaxies; galaxy collisions: infrared observations and analysis of numerical models; and UV spectroscopy of massive young stellar populations in interacting galaxies. Both observational studies and theoretical modelling of interacting galaxies are covered. As a consequence the report is divided into two parts, one on each aspect of the overall project.

  12. FERMIGTRIG - Fermi GBM Trigger Catalog

    Data.gov (United States)

    National Aeronautics and Space Administration — This table lists all of the triggers observed by one or more of the 14 GBM detectors (12 NaI and 2 BGO). Note that there are two Browse catalogs resulting from GBM...

  13. A young bipolar outflow from IRAS15398-3359

    Science.gov (United States)

    Bjerkeli, Per; Jørgensen, Jes K.

    2015-08-01

    The Class 0 protostar IRAS 15398-3359 is located in the Lupus I cloud at a distance of 155 pc. The source is known to harbour a molecular outflow, but the region has not attracted much interest until recently. IRAS 15398 is known to show interesting chemical signatures and being one of the very nearby, young outflow sources makes it an excellent target for detailed studies of the gas kinematics of different species.We present observations of several molecular species, carried out with the Submillimeter Array and ALMA, towards the IRAS 15398 outflow. The analysis of CO emission show obvious signs of episodic mass ejections, with a dynamical time scale between the knots in the jet, of the order 100 years. This is consistent with recent ALMA results where luminosity outbursts are estimated to occur on similar time-scales. The physical properties of the outflow, such as mass, momentum, momentum rate, mechanical luminosity, kinetic energy and mass-loss rate are estimated at relatively low values. We argue that this source is of a very young age, possibly younger than ~1000 years. This is consistent with recent studies of the kinematics of the inner envelope/disk. The observed line profiles were compared to full 3D radiative transfer models of the source, constructed with the Line Modelling Engine (LIME). The observed line shapes can only be understood when considering several distinctly different physical components, viz. the outflow cavity, the infalling envelope and the surrounding cloud material. This allows us to put quantitative constraints on the kinematics of the material close to the central source.

  14. MC and A instrumentation catalog

    Energy Technology Data Exchange (ETDEWEB)

    Neymotin, L. [ed.] [Brookhaven National Lab., Upton, NY (United States); Sviridova, V. [ed.] [All-Russian Research Inst. of Automatics, Moscow (Russian Federation)

    1998-06-01

    In 1981 and 1985, two editions of a catalog of non-destructive nuclear measurement instrumentation, and material control and surveillance equipment, were published by Brookhaven National Laboratory (BNL). The last edition of the catalog included one hundred and twenty-five entries covering a wide range of devices developed in the US and abroad. More than ten years have elapsed since the publication of the more recent Catalog. Devices described in it have undergone significant modifications, and new devices have been developed. Therefore, in order to assist specialists in the field of Material Control and Accounting (MC and A), a new catalog has been created. Work on this instrumentation catalog started in 1997 as a cooperative effort of Brookhaven National Laboratory (BNL), operated by Brookhaven Science Associates under contract to the US Department of Energy, and the All-Russian Research Institute of Automatics (VNIIA), subordinate institute of the Atomic Energy Ministry of the Russian Federation, within the collaborative US-Russia Material Protection, Control, and Accounting (MPC and A) Program. Most of the equipment included in the Catalog are non-destructive assay (NDA) measurement devices employed for purposes of accounting, confirmation, and verification of nuclear materials. Other devices also included in the Catalog are employed in the detection and deterrence of unauthorized access to or removal of nuclear materials (material control: containment and surveillance). Equipment found in the Catalog comprises either: (1) complete devices or systems that can be used for MC and A applications; or (2) parts or components of complete systems, such as multi-channel analyzers, detectors, neutron generators, and software. All devices are categorized by their status of development--from prototype to serial production.

  15. 26 CFR 1.408A-10 - Coordination between designated Roth accounts and Roth IRAs.

    Science.gov (United States)

    2010-04-01

    ... 26 Internal Revenue 5 2010-04-01 2010-04-01 false Coordination between designated Roth accounts and Roth IRAs. 1.408A-10 Section 1.408A-10 Internal Revenue INTERNAL REVENUE SERVICE, DEPARTMENT OF... Plans, Etc. § 1.408A-10 Coordination between designated Roth accounts and Roth IRAs. Q-1. Can...

  16. HDO abundance in the envelope of the solar-type protostar IRAS 16293-2422

    NARCIS (Netherlands)

    Parise, B; Caux, E; Castets, A; Ceccarelli, C; Loinard, L; Tielens, AGGM; Bacmann, A; Cazaux, S; Comito, C; Helmich, F; Kahane, C; Schilke, P; van Dishoeck, E; Wakelam, [No Value; Walters, A

    2005-01-01

    We present IRAM 30m and JCMT observations of HDO lines towards the solar-type protostar IRAS 16293-2422. Five HDO transitions have been detected on-source, and two were unfruitfully searched for towards a bright spot of the outflow of IRAS 16293- 2422. We interpret the data by means of the Ceccarell

  17. La ira en la primera tradición cidiana

    Directory of Open Access Journals (Sweden)

    Oscar Martín

    2007-11-01

    Full Text Available The expressions of the wrath in the Cantar de Mio Cid include a group of traditions of different nature, which constitute a point of departure for the proper interpretation of the text. On the one hand, the ira regia ('regal wrath' is related to the emotional medieval theory on wrath, and, on the other hand, the analysis of the political dimension of wrath in the Cantar and in the preceding Cidian tradition, contributes with new aspects on cultural practices and legal systems in the Middle Ages.

  18. Chemistry of Carbon Rich Star IRAS 15194–5115

    Indian Academy of Sciences (India)

    A. Ali

    2006-12-01

    We have constructed two gas-phase models to study the chemistry of circumstellar envelope surrounding the carbon-rich variable star IRAS 15194–5115. The network used consists of 3893 reactions involving 397 gas-phase species. The derived fractional abundances for many molecules are in excellent agreement with values obtained from observations. The predicted column densities from the two models go well with the observed values of carbon star IRC + 10216. The dominant formation routes for three groups of species are discussed through the inner and outer envelopes.

  19. Il grande complotto televisivo: Giuseppe Genna, Dies Irae (2006)

    OpenAIRE

    Milanesi, Claudio

    2012-01-01

    Giuseppe Genna (1969-), scrittore, poeta, critico letterario, pubblicista, la cui produzione può essere seguita sui siti (Clarence, I Miserabili, Carmilla On Line, GiuGenna) con cui collabora o che cura personalmente, ha finora pubblicato 8 romanzi, più una serie di scritti di varia natura (raccolte di saggi, recensioni, instant book). Dei 7 romanzi, 4 formano la serie noir dell’ispettore Lopez. Nei quattro romanzi successivi al ciclo – L’anno luce (2005), Dies Irae (2006), Medium. Una storia...

  20. IRAS galaxies and the large-scale structure in the CfA slice

    Science.gov (United States)

    Babul, Arif; Postman, Marc

    1990-01-01

    The spatial distributions of the IRAS and the optical galaxies in the first CfA slice are compared. The IRAS galaxies are generally less clustered than optical ones, but their distribution is essentially identical to that of late-type optical galaxies. The discrepancy between the clustering properties of the IRAS and optical samples in the CfA slice region is found to be entirely due to the paucity of IRAS galaxies in the core of the Coma cluster. The spatial distributions of the IRAS and the optical galaxies, both late and early types, outside the dense core of the Coma cluster are entirely consistent with each other. This conflicts with the prediction of the linear biasing scenario.

  1. Star Formation in Molecular Cloud Associated with IRAS 07028-110

    Institute of Scientific and Technical Information of China (English)

    QIN Sheng-Li; WU Yue-Fang; WANG Jun-Jie; ZHAO Gang; SHI Jian-Rong; MARTIN Miller

    2004-01-01

    @@ The first mapping observations in 12CO J = 2 - 1 and 12 CO J = 1 - 0 lines were made towards molecular cloud associated with IRAS 07028-1100. The results show a mono-polar outflow (primarily blueshifted component)near IRAS 07028-1100, which suggests that star formation is occurring in this region. On the basis of the MSX(Midcourse Space Experiment) band-A image, molecular cloud core contours, NVSS data and IRAS data, we identify IRAS 07028-1100 as an embedded young intermediate-mass star. According to the 2MASS data, we suggest a sequential star formation in the infrared cluster associated with IRAS 07028-1100.

  2. Astronomical catalog desk reference, 1994 edition

    Science.gov (United States)

    1994-01-01

    The Astronomical Catalog Desk Reference is designed to aid astronomers in locating machine readable catalogs in the Astronomical Data Center (ADC) archives. The key reference components of this document are as follows: A listing of shortened titles for all catalogs available from the ADC (includes the name of the lead author and year of publication), brief descriptions of over 300 astronomical catalogs, an index of ADC catalog numbers by subject keyword, and an index of ADC catalog numbers by author. The heart of this document is the set of brief descriptions generated by the ADC staff. The 1994 edition of the Astronomical Catalog Desk Reference contains descriptions for over one third of the catalogs in the ADC archives. Readers are encouraged to refer to this section for concise summaries of those catalogs and their contents.

  3. The virtual union catalog: a comparative study

    Directory of Open Access Journals (Sweden)

    Karen Coyle

    2000-02-01

    Full Text Available A Virtual union catalog is a possible alternative to the centralized database of distributed resources found in many library systems. Such a catalog would not be maintained in a single location but would be created in real time by searching each local campus or affiliate library’s catalog through the Z39.50 protocol. This would eliminate the redundancy of record storage as well as the expense of loading and maintaining access to the central catalog. This article describes a test implementation of a virtual union catalog for the University of California system. It describes some of the differences between the virtual catalog and the existing, centralized union catalog (MELVYL. The research described in the paper suggests enhancements that must be made if the virtual union catalog is to become a reasonable service alternative to the MELVYL® catalog.

  4. Photospheric composition of the carbon-rich 21 micron post-AGB stars IRAS 22223+4327 and IRAS 04296+3429

    CERN Document Server

    Decin, L; Waelkens, C; Bakker, E J; Decin, Leen; Winckel, Hans Van; Waelkens, Christoffel; Bakker, Eric J.

    1998-01-01

    We present a detailed chemical analysis on the basis of high-resolution, high signal-to-noise optical spectra of two post-AGB objects IRAS 22223+4327 and IRAS 04296+3429. Both display the unidentified $21 \\mu m$ feature in their IR-spectra. The spectroscopic indicators provide accurate atmospheric parameters of $T_{eff}$=6500 K, $log g=1.0$ and $\\xi_t = 5.5 km/s$ for IRAS 2223+4327 and $T_{eff}$=7000 K, $log g=1.0$ and $\\xi_t = 4.0 km/s$ for IRAS 04296+3429. Both photospheres are found to be metal-deficient with [Fe/H]= -0.4 and -0.7 respectively. C and N are found to be overabundant. The mean abundance of all the measured s-process-elements is [s/Fe]=+1.0 for IRAS 2223+4327 and +1.4 for IRAS 04296+3429. The distribution of the s-process elements can best be described as due to a distribution of neutron exposures with a low mean neutron exposure of $\\tau_{0} = 0.2 mbarn^{-1}$. The 21 $\\mu$m stars form an interesting sub-group in the total post-AGB sample of stars, not only for their IR characteristics, but al...

  5. Characterization of IRA/IRB hybrid insulin receptors using bioluminescence resonance energy transfer.

    Science.gov (United States)

    Blanquart, Christophe; Achi, Josepha; Issad, Tarik

    2008-10-01

    The insulin receptor (IR) is composed of two alpha-chains that bind ligands and two beta-chains that possess an intracellular tyrosine kinase activity. The IR is expressed in cells as two isoforms containing or not exon 11 (IRB and IRA, respectively). Several mRNA studies have demonstrated that the two isoforms are co-expressed in different tissues and in several cancer cells. IRA/IRB hybrid receptors, constituting of an alphabeta-chain from IRA and an alphabeta-chain from IRB, are likely to occur in cells co-expressing both isoforms, but their study has been hampered by the lack of specific tools. In previous work, we used BRET to study IR and IGF1R homodimers and heterodimers. Here, we have used BRET to characterize IRA/IRB hybrids. BRET saturation experiments showed that IRA/IRB hybrids are randomly formed in cells. Moreover, by co-transfecting HEK-293 cells with a luciferase-tagged kinase-dead version of one isoform and a wild-type untagged version of the other isoform, we showed that IRA/IRB hybrids can recruit, upon ligand stimulation, a YFP-tagged intracellular partner. Finally, using BRET, we have studied ligand-induced conformational changes within IRA/IRB hybrids. Dose-response experiments showed that hybrid receptors bind IGF-2 with the same affinity than IRA homodimers, whereas they bind IGF-1 with a lower affinity. Altogether, our data indicate that IRA/IRB hybrid receptors can form in cells co-expressing both IR isoforms, that they are capable of recruiting intracellular partners upon ligand stimulation, and that they have pharmacological properties more similar to those of IRA than those of IRB homodimers with regards to IGF-2.

  6. 2MASS Photometric Redshift catalog: a comprehensive three-dimensional census of the whole sky

    CERN Document Server

    Bilicki, Maciej; Peacock, John A; Cluver, Michelle E; Steward, Louise

    2014-01-01

    Key cosmological applications require the three-dimensional galaxy distribution on the entire celestial sphere. These include measuring the gravitational pull on the Local Group, estimating the large-scale bulk flow and testing the Copernican principle. However, the largest all-sky redshift surveys -- the 2MRS and IRAS PSCz -- have median redshifts of only z=0.03 and sample the very local Universe. There exist all-sky galaxy catalogs reaching much deeper -- SuperCOSMOS in the optical, 2MASS in the near-IR and WISE in the mid-IR -- but these lack complete redshift information. At present, the only rapid way towards larger 3D catalogs covering the whole sky is through photometric redshift techniques. In this paper we present the 2MASS Photometric Redshift catalog (2MPZ) containing 1 million galaxies, constructed by cross-matching 2MASS XSC, WISE and SuperCOSMOS all-sky samples and employing the artificial neural network approach (the ANNz algorithm), trained on such redshift surveys as SDSS, 6dFGS and 2dFGRS. T...

  7. A quantitative analysis of IRAS maps of molecular clouds

    Science.gov (United States)

    Wiseman, Jennifer J.; Adams, Fred C.

    1994-01-01

    We present an analysis of IRAS maps of five molecular clouds: Orion, Ophiuchus, Perseus, Taurus, and Lupus. For the classification and description of these astrophysical maps, we use a newly developed technique which considers all maps of a given type to be elements of a pseudometric space. For each physical characteristic of interest, this formal system assigns a distance function (a pseudometric) to the space of all maps: this procedure allows us to measure quantitatively the difference between any two maps and to order the space of all maps. We thus obtain a quantitative classification scheme for molecular clouds. In this present study we use the IRAS continuum maps at 100 and 60 micrometer(s) to produce column density (or optical depth) maps for the five molecular cloud regions given above. For this sample of clouds, we compute the 'output' functions which measure the distribution of density, the distribution of topological components, the self-gravity, and the filamentary nature of the clouds. The results of this work provide a quantitative description of the structure in these molecular cloud regions. We then order the clouds according to the overall environmental 'complexity' of these star-forming regions. Finally, we compare our results with the observed populations of young stellar objects in these clouds and discuss the possible environmental effects on the star-formation process. Our results are consistent with the recently stated conjecture that more massive stars tend to form in more 'complex' environments.

  8. y La Güira (río Cuyaguateje

    Directory of Open Access Journals (Sweden)

    Mario Luis Acosta Medina

    2007-01-01

    Full Text Available La erosión es una de las formas más significativas de degradación de los suelos y es fuertemente influenciada por el uso de la tierra. En este trabajo se calculó la erosión real y su relación con los gastos sólidos en la cuenca V Aniversario y La Güira mediante el empleo del SIG Idrisis 32, la imagen de satélite Landsat 7 y aplicando el modelo RUSLE. Se obtuvo un mapa de uso de suelo aplicando el método de máxima verosimilitud y el método de mínima distancia a la media, de estos se seleccionó el primero para determinar la erosión real sobre la base del modelo RUSLE. En el mapa de erosión real se observó que las zonas de mayor erosión son las dedicadas a labranza, que se ubican, por lo general, en los valles intramontanos. Se obtuvo una fuerte correlación entre los valores determinados por RUSLE y la serie de gastos sólidos medidos en cada una de las estaciones hidrométricas V Aniversario y La Güira. Se notó, además, que existe una sobrepredicción en la pérdida de suelo predicha por el modelo RUSLE.

  9. The Interstellar Bullet Engine IRAS 05506+2414

    Science.gov (United States)

    Stantzos, Nicholas W.; Sahai, Raghvendra

    2011-01-01

    Throughout their life-cycles, high-mass stars inject large amounts of energy and momentum into theirenvironments through stellar winds. Results from a study of the Orion BN/KL region indicate that disruption of a massive young stellar system can lead to an explosive event producing a wide-angle outflow, different from the classical bipolar flows driven by young stellar object (YSO) accretion disks. The discovery of a massive YSO, IRAS 05506+2414, may prove to be the second instance of this uncommon outflow. Prior to this study, data was collected using the Arizona Radio Observatory's 10-meter and 12-meter telescopes. Spectra of 16 different molecular line transitions were organized, reduced, and prepared for further analysis. A variety of molecular transitions were observed, such as 12CO 2-1, HCO+ 3-2, CS 3-2, in order to probe physical conditions of the YSO. From line transitions like HCO+ 3-2, we will determine physical properties like density, temperature, and velocity of our source object. For each molecular transition, the spectra were averaged in subsets, which were then averaged to produce a final spectra with an optimal signal to noise ratio. Future radiative modeling will yield mass and energetics of IRAS05506+2414.

  10. Chemical modeling of water deuteration in IRAS16293-2422

    CERN Document Server

    Wakelam, V; Aikawa, Y; Coutens, A; Bottinelli, S; Caux, E

    2014-01-01

    IRAS 16293-2422 is a well studied low-mass protostar characterized by a strong level of deuterium fractionation. In the line of sight of the protostellar envelope, an additional absorption layer, rich in singly and doubly deuterated water has been discovered by a detailed multiline analysis of HDO. To model the chemistry in this source, the gas-grain chemical code Nautilus has been used with an extended deuterium network. For the protostellar envelope, we solve the chemical reaction network in infalling fluid parcels in a protostellar core model. For the foreground cloud, we explored several physical conditions (density, cosmic ionization rate, C/O ratio). The main results of the paper are that gas-phase abundances of H2O, HDO and D2O observed in the inner regions of IRAS16293-2422 are lower than those predicted by a 1D dynamical/chemical (hot corino) model in which the ices are fully evaporated. The abundance in the outer part of the envelope present chaotic profiles due to adsorption/evaporation competition...

  11. Water around IRAS15398-3359 observed with ALMA

    CERN Document Server

    Bjerkeli, P; Bergin, E A; Frimann, S; Harsono, D; Jacobsen, S K; Lindberg, J E; Persson, M; Sakai, N; van Dishoeck, E F; Visser, R; Yamamoto, S

    2016-01-01

    How protostars accrete mass is one of the fundamental problems of star formation. High column densities and complex kinematical structures make direct observations challenging and they only provide a snapshot. Chemical tracers provide an interesting alternative to characterise the infall histories of protostars. Previous observations of H13CO+ towards the low-mass protostar IRAS15398-3359 showed a depression in the abundance. This is a sign of destruction of HCO+ by an enhanced presence of gaseous water in an extended region, possibly related to a recent burst in the accretion. Direct observations of water vapour can determine the exact extent of the emission and confirm the hypothesis that HCO+ is indeed a good tracer of the water snow-line. IRAS15398 was observed using ALMA at 0.5" resolution. Maps of HDO(101-000) and H218O(414-321) were taken simultaneously with observations of the CS(8-7) and N2H+(5-4) lines and continuum at 0.65 and 0.75 mm. The maps were interpreted using dust radiative transfer calcula...

  12. Planning for a data base system to support satellite conceptual design

    Science.gov (United States)

    Claydon, C. R.

    1976-01-01

    The conceptual design of an automated satellite design data base system is presented. The satellite catalog in the system includes data for all earth orbital satellites funded to the hardware stage for launch between 1970 and 1980, and provides a concise compilation of satellite capabilities and design parameters. The cost of satellite subsystems and components will be added to the base. Data elements are listed and discussed. Sensor and science and applications opportunities catalogs will be included in the data system. Capabilities of the BASIS storage, retrieval, and analysis system are used in the system design.

  13. The Asteroid Catalog Using AKARI IRC Slow-Scan Observations

    CERN Document Server

    Hasegawa, Sunao; Kuroda, Daisuke; Takita, Satoshi; Usui, Fumihiko

    2012-01-01

    We present an asteroidal catalog from the mid-infrared wavelength region using the slow-scan observation mode obtained by the Infrared Camera (IRC) on-board the Japanese infrared satellite AKARI. An archive of IRC slow-scan observations comprising about 1000 images was used to search for serendipitous encounters of known asteroids. We have determined the geometric albedos and diameters for 88 main-belt asteroids, including two asteroids in the Hilda region, and compared these, where possible, with previously published values. Approximately one-third of the acquired data reflects new asteroidal information. Some bodies classified as C or D-type with high albedo were also identified in the catalog.

  14. Mid-IR Properties of Seyferts: Spitzer IRS Spectroscopy of the IRAS 12 μm Seyfert Sample

    Science.gov (United States)

    Charmandaris, Vassilis; Wu, Yanling; Huang, Jiasheng; Spinoglio, Luigi; Tommasin, Silvia

    2010-05-01

    We performed an analysis of the mid-infrared properties of the 12 μm Seyfert sample, a complete unbiased 12 μm flux limited sample of local Seyfert galaxies selected from the IRAS Faint Source Catalog based on low-resolution spectra obtained with the Infrared Spectrograph (IRS) on-board Spitzer Space Telescope. A detailed presentation of this analysis is discussed by Wu et al. (2009). We find that, on average, the 15-30 μm slope of the continuum is = -0.85 ± 0.61 for Seyfert 1s and -1.53 ± 0.84 for Seyfert 2s, and there is substantial scatter in each type. Moreover, nearly 32% of Seyfert 1s, and 9% of Seyfert 2s, display a peak in the mid-infrared spectrum at 20 μm, which is attributed to an additional hot dust component. The polycyclic aromatic hydrocarbon (PAH) equivalent width decreases with increasing dust temperature, as indicated by the global infrared color of the host galaxies. However, no statistical difference in PAH equivalent width is detected between the two Seyfert types of the same bolometric luminosity. Finally, we propose a new method to estimate the AGN contribution to the integrated 12 μm galaxy emission, by subtracting the “star formation” component in the Seyfert galaxies, making use of the tight correlation between PAH 11.2 μm luminosity and 12 μm luminosity for star forming galaxies.

  15. Mid-IR properties of Seyferts: Spitzer/IRS spectroscopy of the IRAS 12micron Seyfert sample

    CERN Document Server

    Charmandaris, V; Huang, J; Spinoglio, L; Tommasin, S

    2009-01-01

    We performed an analysis of the mid-infared properties of the 12micron Seyfert sample, a complete unbiased 12micron flux limited sample of local Seyfert galaxies selected from the IRAS Faint Source Catalog, based on low resolution spectra obtained with the Infrared Spectrograph (IRS) on-board Spitzer Space Telescope. A detailed presentation of this analysis is dicussed in Wu et al. (2009). We find that on average, the 15-30micron slope of the continuum is -0.85+/-0.61 for Seyfert 1s and -1.53+/-0.84 for Seyfert 2s, and there is substantial scatter in each type. Moreover, nearly 32% of Seyfert 1s, and 9% of Seyfert 2s, display a peak in the mid-infrared spectrum at 20micron, which is attributed to an additional hot dust component. The Polycyclic Aromatic Hydrocarbon (PAH) equivalent width decreases with increasing dust temperature, as indicated by the global infrared color of the host galaxies. However, no statistical difference in PAH equivalent width is detected between the two Seyfert types, 1 and 2, of the...

  16. Satellite Communication.

    Science.gov (United States)

    Technology Teacher, 1985

    1985-01-01

    Presents a discussion of communication satellites: explains the principles of satellite communication, describes examples of how governments and industries are currently applying communication satellites, analyzes issues confronting satellite communication, links mathematics and science to the study of satellite communication, and applies…

  17. Synthesizing Products for Online Catalogs

    CERN Document Server

    Nguyen, Hoa; Paparizos, Stelios; Freire, Juliana; Agrawal, Rakesh

    2011-01-01

    A high-quality, comprehensive product catalog is essential to the success of Product Search engines and shopping sites such as Yahoo! Shopping, Google Product Search or Bing Shopping. But keeping catalogs up-to-date becomes a challenging task, calling for the need of automated techniques. In this paper, we introduce the problem of product synthesis, a key component of catalog creation and maintenance. Given a set of offers advertised by merchants, the goal is to identify new products and add them to the catalog together with their (structured) attributes. A fundamental challenge is the scale of the problem: a Product Search engine receives data from thousands of merchants and millions of products; the product taxonomy contains thousands of categories, where each category comes in a different schema; and merchants use representations for products that are different from the ones used in the catalog of the Product Search engine. We propose a system that provides an end-to-end solution to the product synthesis p...

  18. The Kepler Input Catalog

    Science.gov (United States)

    Latham, D. W.; Brown, T. M.; Monet, D. G.; Everett, M.; Esquerdo, G. A.; Hergenrother, C. W.

    2005-12-01

    The Kepler mission will monitor 170,000 planet-search targets during the first year, and 100,000 after that. The Kepler Input Catalog (KIC) will be used to select optimum targets for the search for habitable earth-like transiting planets. The KIC will include all known catalogued stars in an area of about 177 square degrees centered at RA 19:22:40 and Dec +44:30 (l=76.3 and b=+13.5). 2MASS photometry will be supplemented with new ground-based photometry obtained in the SDSS g, r, i, and z bands plus a custom filter centered on the Mg b lines, using KeplerCam on the 48-inch telescope at the Whipple Observatory on Mount Hopkins, Arizona. The photometry will be used to estimate stellar characteristics for all stars brighter than K 14.5 mag. The KIC will include effective temperature, surface gravity, metallicity, reddening, distance, and radius estimates for these stars. The CCD images are pipeline processed to produce instrumental magnitudes at PSI. The photometry is then archived and transformed to the SDSS system at HAO, where the astrophysical analysis of the stellar characteristics is carried out. The results are then merged with catalogued data at the USNOFS to produce the KIC. High dispersion spectroscopy with Hectochelle on the MMT will be used to supplement the information for many of the most interesting targets. The KIC will be released before launch for use by the astronomical community and will be available for queries over the internet. Support from the Kepler mission is gratefully acknowledged.

  19. The RBV metadata catalog

    Science.gov (United States)

    Andre, Francois; Fleury, Laurence; Gaillardet, Jerome; Nord, Guillaume

    2015-04-01

    RBV (Réseau des Bassins Versants) is a French initiative to consolidate the national efforts made by more than 15 elementary observatories funded by various research institutions (CNRS, INRA, IRD, IRSTEA, Universities) that study river and drainage basins. The RBV Metadata Catalogue aims at giving an unified vision of the work produced by every observatory to both the members of the RBV network and any external person interested by this domain of research. Another goal is to share this information with other existing metadata portals. Metadata management is heterogeneous among observatories ranging from absence to mature harvestable catalogues. Here, we would like to explain the strategy used to design a state of the art catalogue facing this situation. Main features are as follows : - Multiple input methods: Metadata records in the catalog can either be entered with the graphical user interface, harvested from an existing catalogue or imported from information system through simplified web services. - Hierarchical levels: Metadata records may describe either an observatory, one of its experimental site or a single dataset produced by one instrument. - Multilingualism: Metadata can be easily entered in several configurable languages. - Compliance to standards : the backoffice part of the catalogue is based on a CSW metadata server (Geosource) which ensures ISO19115 compatibility and the ability of being harvested (globally or partially). On going tasks focus on the use of SKOS thesaurus and SensorML description of the sensors. - Ergonomy : The user interface is built with the GWT Framework to offer a rich client application with a fully ajaxified navigation. - Source code sharing : The work has led to the development of reusable components which can be used to quickly create new metadata forms in other GWT applications You can visit the catalogue (http://portailrbv.sedoo.fr/) or contact us by email rbv@sedoo.fr.

  20. Searching the SOHO online catalogs

    Science.gov (United States)

    Thompson, William; Yurow, Ron

    1994-01-01

    The SOHO on-line catalogs will contain information about the observations from several made or planned campaigns, that must be available to scientists who wish to use SOHO data. The World Wide Web (WWW) was chosen as the interface to the SOHO on-line catalogs, because it is easy to use, well suited to a geographically distributed user community, and freely available. Through the use of a forms-capable WWW client such as Mosaic or Lynx, a scientist will be able to browse through the catalogs of observations in a very simple, self explanatory way. Data files can then be selected from the returned lists for either immediate transferring or sending on tape by mail, with appropriate checks for whether data is in the public domain or not.

  1. Separating detection and catalog production

    CERN Document Server

    Akhlaghi, Mohammad

    2016-01-01

    In the coming era of massive surveys (e.g. LSST, SKA), the role of the database designers and the algorithms they choose to adopt becomes the decisive factor in scientific progress. Systems that allow/encourage users/scientists to be more creative with the reduction/analysis algorithms can greatly enhance scientific productivity. The separation/modularity of the detection processes and catalog production is one proposal for achieving `Reduction/analysis algorithms for large databases and vice versa' (a key theme for the 26th ADASS). With the new noise-based detection paradigm, non-parametric detection is now possible for astronomical objects to very low surface brightness limits. In our implementation, one software (NoiseChisel) is in charge of detection and another (MakeCatalog) is in charge of catalog production. This modularity has many advantages for pipeline developers, and more importantly, it empowers scientific curiosity and creativity.

  2. Water around IRAS 15398-3359 observed with ALMA

    Science.gov (United States)

    Bjerkeli, P.; Jørgensen, J. K.; Bergin, E. A.; Frimann, S.; Harsono, D.; Jacobsen, S. K.; Lindberg, J. E.; Persson, M.; Sakai, N.; van Dishoeck, E. F.; Visser, R.; Yamamoto, S.

    2016-10-01

    Context. Understanding how protostars accrete their mass is one of the fundamental problems of star formation. High dust column densities and complex kinematical structures make direct observations challenging. Moreover, direct observations only provide a snapshot. Chemical tracers provide an interesting alternative to characterise the infall histories of protostars. Aims: We aim to map the distribution and kinematics of gaseous water towards the low-mass embedded protostar IRAS 15398-3359. Previous observations of H13CO+ showed a depression in the abundance towards IRAS 15398-3359. This is a sign of destruction of HCO+ by an enhanced presence of gaseous water in an extended region, possibly related to a recent burst in the accretion. Direct observations of water vapour can determine the exact extent of the emission and confirm the hypothesis that HCO+ is indeed a good tracer of the water snow-line. Methods: IRAS 15398-3359 was observed using the Atacama Large Millimeter/submillimeter Array (ALMA) at 0.5″ resolution in two setups at 390 and 460 GHz. Maps of HDO (101-000) and were taken simultaneously with observations of the CS (8-7) and N2H+ (5-4) lines and continuum at 0.65 and 0.75 mm. The maps were interpreted using dust radiative transfer calculations of the protostellar infalling envelope with an outflow cavity. Results: HDO is clearly detected and extended over the scales of the H13CO+ depression, although it is displaced by 500 AU in the direction of the outflow. HO is tentatively detected towards the red-shifted outflow lobe, but otherwise it is absent from the mapped region, which suggests that temperatures are low. Although we cannot entirely exclude a shock origin, this indicates that another process is responsible for the water emission. Conclusions: Based on the temperature structure obtained from dust radiative transfer models, we conclude that the water was most likely released from the grains in an extended hour-glass configuration during a

  3. Federal Catalog System Policy Manual

    Science.gov (United States)

    1975-03-01

    interests from the Central Catalog File. When a record for a NSN exists in the CIMM’s suspense file and an IMC transaction is not received from the ICP 45...days after followup, the CIMM will clear the CIMM’s suspense file and withdraw the activity from the Central Catalog File. (See DoD 4140.26-M, Vol I...Tractors, Wheeled B 2330 Trailers B 2340 Motorcycles, Motor Scooters , and Bicycles B 2350 Combat, Assault, and Tactical Vehicles, Tracked B 2430 Tractors

  4. Computer Software Cataloging: Techniques and Examples.

    Science.gov (United States)

    Holzberlein, Deanne

    1986-01-01

    Examples of catalog entries for microcomputer software data files are given in three sections: educational software (elementary and secondary level, college level); educational game software; business-related software. Catalog record elements, simplification methods for cataloging of machine-readable data files, and future considerations are…

  5. Iranian National Union Catalog Description and Regulations.

    Science.gov (United States)

    Harvey, John F.

    This outline of how to establish and maintain an Asian national union catalog contains basic instruction for the staff and for the participating libraries of one of West Asia's largest union catalogs. It has been prepared to: (1) define and clarify the purposes of the Iranian National Union Catalog; (2) explain the policies and procedures under…

  6. Catalog It! A Guide to Cataloging School Library Materials.

    Science.gov (United States)

    Kaplan, Allison G.; Riedling, Ann Marlow

    This book is designed for courses that prepare college and university students for undergraduate or graduate degrees in school library media. Its objectives are to present the theory and practice of cataloging and classification in the school library environment. The manual is divided into eight chapters. Chapter 1: A Brief History of Cataloging…

  7. VizieR Online Data Catalog: Predicted LIR for SDSS galaxies (Ellison+, 2016)

    Science.gov (United States)

    Ellison, S. L.; Teimoorinia, H.; Rosario, D. J.; Trevor Mendel, J.

    2016-07-01

    In this work we will make use of data from three separate spacecraft that collected data in the FIR: the Infrared Astronomical Satellite (IRAS; Neugebauer et al., 1984ApJ...278L...1N), AKARI (Murakami et al., 2007PASJ...59S.369M) and Herschel (Pilbratt et al., 2010A&A...518L...1P). Based on a sample of 1136 galaxies identified in a cross-match between the SDSS and Herschel Stripe 82 Survey, we have trained an ANN to predict IR luminosities based on 23 input parameters measured from SDSS imaging and spectroscopy. (1 data file).

  8. Three epochs of EVN observations towards IRAS 23365+3604

    CERN Document Server

    Romero-Canizales, Cristina; Alberdi, Antxon

    2010-01-01

    The European VLBI Network (EVN) provides us with the necessary sensitivity and angular resolution to study the nuclear and circumnuclear regions in Luminous and Ultraluminous Infrared Galaxies. The high Star Formation Rates (SFR) inferred for these galaxies implies both the presence of a high number of massive stars and a dense surrounding medium. Therefore, bright radio SNe are expected to occur. With the aim of estimating the SFR in ULIRGs by means of Core Collapse supernova (CCSN) detections, we started an observing campaign with the EVN on a small sample of the brightest and farthest ULIRGs in the local Universe. We present here our results from three epochs of quasi-simultaneous observations with the EVN at 6 and 18 cm towards one of the objects in our sample: IRAS 23365+3604.

  9. Three epochs of EVN observations towards IRAS 23365+3604

    Science.gov (United States)

    Romero-Canizales, C.; Perez-Torres, M.; Alberdi, A.

    The European VLBI Network (EVN) provides us with the necessary sensitivity and angular resolution to study the nuclear and circumnuclear regions in Luminous and Ultraluminous Infrared Galaxies. The high Star Formation Rates (SFR) inferred for these galaxies implies both the presence of a high number of massive stars and a dense surrounding medium. Therefore, bright radio SNe are expected to occur. With the aim of estimating the SFR in ULIRGs by means of Core Collapse supernova (CCSN) detections, we started an observing campaign with the EVN on a small sample of the brightest and farthest ULIRGs in the local Universe. We present here our results from three epochs of quasi-simultaneous observations with the EVN at 6 and 18 cm towards one of the objects in our sample: IRAS 23365+3604.

  10. Equilibrium sorption isotherms for nitrate on resin Amberlite IRA 400.

    Science.gov (United States)

    Chabani, M; Amrane, A; Bensmaili, A

    2009-06-15

    The adsorption isotherms of nitrate on resin Amberlite IRA 400 at various pH, in the range 2-12, were experimentally determined by batch tests. The experimental data have been analysed using the Langmuir, Freundlich, Redlich-Peterson and Sips isotherms models. In order to determine the best fit isotherm, two error analysis methods were used to evaluate the data: the regression correlation coefficient, and the statistic Chi-square test. In the range of pH tested, the Sips model was found to give the best fit of the adsorption isotherm data. The maximum adsorption capacity can be deduced from the obtained correlation coefficients and was found to decrease for increasing pH.

  11. The Cosmic Crystallinity Conundrum: Clues from IRAS 17495-2534

    CERN Document Server

    Speck, Angela K; Tartar, Josh B

    2008-01-01

    Since their discovery, cosmic crystalline silicates have presented several challenges to understanding dust formation and evolution. The mid-infrared spectrum of IRAS 17495$-$2534, a highly obscured oxygen-rich asymptotic giant branch (AGB) star, is the only source observed to date which exhibits a clear crystalline silicate absorption feature. This provides an unprecedented opportunity to test competing hypotheses for dust formation. Observed spectral features suggest that both amorphous and crystalline dust is dominated by forsterite (Mg\\_2 SiO\\_4) rather than enstatite (MgSiO\\_3) or other silicate compositions. We confirm that high mass-loss rates should produce more crystalline material, and show why this should be dominated by forsterite. The presence of Mg\\_2 SiO\\_4 glass suggests that another factor (possibly C/O) is critical in determining astromineralogy. Correlation between crystallinity, mass-loss rate and initial stellar mass suggests that only the most massive AGB stars contribute significant qua...

  12. Planetary transit candidates in COROT-IRa01 field

    CERN Document Server

    Carpano, S; Alonso, R; Barge, P; Aigrain, S; Almenara, J -M; Bordé, P; Bouchy, F; Carone, L; Deeg, H J; De la Reza, R; Deleuil, M; Dvorak, R; Erikson, A; Fressin, F; Fridlund, M; Gondoin, P; Guillot, T; Hatzes, A; Jorda, L; Lammer, H; Léger, A; Llebaria, A; Magain, P; Moutou, C; Ofir, A; Ollivier, M; Pacheco, E J; Pátzold, M; Pont, F; Queloz, D; Rauer, H; Régulo, C; Renner, S; Rouan, D; Samuel, B; Schneider, J; Wuchterl, G

    2009-01-01

    Context: CoRoT is a pioneering space mission devoted to the analysis of stellar variability and the photometric detection of extrasolar planets. Aims: We present the list of planetary transit candidates detected in the first field observed by CoRoT, IRa01, the initial run toward the Galactic anticenter, which lasted for 60 days. Methods: We analysed 3898 sources in the coloured bands and 5974 in the monochromatic band. Instrumental noise and stellar variability were taken into account using detrending tools before applying various transit search algorithms. Results: Fifty sources were classified as planetary transit candidates and the most reliable 40 detections were declared targets for follow-up ground-based observations. Two of these targets have so far been confirmed as planets, COROT-1b and COROT-4b, for which a complete characterization and specific studies were performed.

  13. Dante, i diavoli e l'ira di Virgilio

    Directory of Open Access Journals (Sweden)

    Federico Saviotti

    2014-07-01

    Full Text Available Riassunto: Numerosi interventi critici hanno analizzato ad ogni livello la diablerie che Dante mette in scena in If. XXI-XXIII; tuttavia, la sua eccentricità formale e contenutistica rispetto al resto del poema sembra ancora imbarazzare gli esegeti. In questo articolo si cerca di giustificarne la coerenza nel quadro della poetica della comedìa dantesca, concentrandosi su alcuni aspetti di particolare interesse: tra questi, l’opportunità di una lettura carnevalesca – in senso bachtiniano – della diablerie e il senso del “riso” di cui questa è portatrice; la presenza di un rovesciamento intra-testuale definibile come “auto-parodico” rispetto alla scena di If. VIII-IX e apprezzabile a partire dalla rappresentazione dei diversi personaggi; la “sconfitta” due volte patita da Virgilio nei confronti dei diavoli e la definizione, in entrambi ed altri casi, della sua ira. Abstract: Many scholars have analyzed at any level the diablerie Dante puts on stage in If. XXI-XXIII; nevertheless, its formal and substantial eccentricity compared with the rest of the poem still seems to puzzle the commentators. In this paper I will try to demonstrate its coherence with the poetics of Dante’s comedìa, by focusing on some very interesting elements: the opportunity of a bachtinian interpretation of the diablerie as a carnival expression and the meaning of the “laughter” it conveys; the presence of an intra-textual reversal which may be defined as “auto-parodic” in respect to the scene in If. VIII-IX and appreciated through the poetic representation of the different characters; the “defeat” which Virgilio undergoes twice against the devils and the definition, in both and other cases, of its ira.  

  14. Second Line of Defense Master Spares Catalog

    Energy Technology Data Exchange (ETDEWEB)

    Henderson, Dale L.; Muller, George; Mercier, Theresa M.; Brigantic, Robert T.; Perkins, Casey J.; Cooley, Scott K.

    2012-11-20

    This catalog is intended to be a comprehensive listing of repair parts, components, kits, and consumable items used on the equipment deployed at SLD sites worldwide. The catalog covers detection, CAS, network, ancillary equipment, and tools. The catalog is backed by a Master Parts Database which is used to generate the standard report views of the catalog. The master parts database is a relational database containing a record for every part in the master parts catalog along with supporting tables for normalizing fields in the records. The database also includes supporting queries, database maintenance forms, and reports.

  15. Printing and the Online Catalog.

    Science.gov (United States)

    Price, Bennett J.

    1984-01-01

    Discusses issues involved in offering printing for online library catalogs and weighs advantages and disadvantages of screen printing versus remote printing--speed, quality, privacy, convenience, noise, control, costs, accessibility and service. Additional technical issues discussed are buffered versus unbuffered asynchronous printer ports,…

  16. Notions Catalog. Polish Functional Grammar.

    Science.gov (United States)

    Woytak, Lidia

    The Polish notions catalog systematizes a variety of informational codes used in Polish, resulting in lists of notions, each presented from a structural perspective. Where applicable, they are accompanied by a morphological component, structural chart, semantic description, frequentative expressions, and related vocabulary items. The notions…

  17. Greenbook Abstract and Catalog--1.

    Science.gov (United States)

    Coole, Walter A.; Reitan, Henry M.

    This catalog is intended to be issued periodically as a means of extending and updating teaching materials which have been previously published through ERIC by these authors. The materials include the Alpha and Gamma levels of the "Greenbook System," pre-professional and entry in-service professional levels of an integrated sequence of…

  18. Greenbook Abstract and Catalog--2.

    Science.gov (United States)

    Coole, Walter A.

    This catalog is the second in a series extending and updating teaching materials previously disseminated through the ERIC system, including the "Greenbook System" of training materials for higher education professionals (ED 103 083 and 084). Open Classroom Documentation, a procedural manual for an autoinstructional learning laboratory at…

  19. Greenbook Abstract and Catalog--3.

    Science.gov (United States)

    Coole, Walter A.

    This catalog is the third in a series extending and updating teaching materials previously disseminated through the ERIC system, including the "Greenbook System" of training materials for higher education professionals (ED 103 083 and 084), Open Classroom Documentation, a procedural manual for an autoinstructional learning laboratory at…

  20. Technology and the Online Catalog.

    Science.gov (United States)

    Graham, Peter S.

    1983-01-01

    Discusses trends in computer technology and their use for library catalogs, noting the concept of bandwidth (describes quantity of information transmitted per given unit of time); computer hardware differences (micros, minis, maxis); distributed processing systems and databases; optical disk storage; networks; transmission media; and terminals.…

  1. Ion Exchange Extraction of Boron from Aqueous Fluids by Amberlite IRA 743 Resin

    Institute of Scientific and Technical Information of China (English)

    肖应凯; 廖步勇; 刘卫国; 肖云; SWIHART,GeorgeH.

    2003-01-01

    The ion exchange characteristics d Amherlite IRA 743 resin for extracting boron from aqueous fluids have been investigated in detail. The results show that AmherHte IRA 743 resin, a boron specific ion exchange resin, can quantitatively extract boron as the B (OH)4- spedes from weakly basle solution. Some exchangeable anions such as CI- and SO42- are present, resulting in an increase in pH value of the loeded solution within the nan, and the boron in natural aqueous fluids with low nH is also extracted by Amberlite IRA 743 resin. However, the voiume of loaded solution must be restricted. The maximum voiume of loaded solution giving quantitative extraction of boron decreases for sample soh.,tiom of lower pH value. Warm HCI solution is more effective than room temperature HCI solution for eluting boron from Amberllte IRA 743 resin.

  2. Transcript of speech by Dr. Ira Gabrielson to the Constitutional Convention, December 14, 1955

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — Transcript of speech by Dr. Ira Gabrielson, president of Wildlife Management Institute, to Alaska Constitutional Convention, December 14, 1955.

  3. Individual retirement account balances, contributions, and rollovers, 2010: the EBRI IRA database.

    Science.gov (United States)

    Copeland, Craig

    2012-05-01

    In 2010, IRA owners were more likely to be male, especially those whose accounts originated from a rollover or were a SEP/SIMPLE. Among all IRA owners in the database, nearly one-half (45.8 percent) were ages 45-64. The average and median IRA account balance in 2010 was $67,438 and $17,863, respectively, while the average and median IRA individual balance (all accounts from the same person combined) was $91,864 and $25,296. Individuals with a traditional-originating from rollovers had the highest average and median balance of $123,426 and $38,138, respectively. Roth owners had the lowest average and median balance at $22,437 and $11,471. The average and median individual IRA balance increased with age through age 70. The average amount contributed to an IRA in the database was $3,335 in 2010. The average contribution was highest for accounts owned by those ages 65-69, and more contributions were made to Roth accounts than to traditional accounts (both those originating from contributions and rollovers). However, the average contribution to a traditional account was higher, at $3,517, compared with $3,240 to a Roth account. Yet, a higher overall amount was contributed to Roths ($2.3 billion for Roths compared with $1.3 billion for traditional accounts). Focusing on those owning traditional or Roth IRAs, 9.3 percent of the accounts received contributions, and 12.1 percent of the individuals owning these IRA types contributed to them in 2010. Among traditional IRA owners, 5.2 percent contributed, while 24.0 percent of those owning a Roth contributed to it during 2010. Of those individuals contributing to an IRA, 43.5 percent contributed the maximum amount. Of those contributing to a traditional IRA, 48.7 percent maxed out their contribution, while 39.3 percent did so with a Roth. The average and median account balances increased from $54,863 and $15,756 respectively in 2008 to $67,438 and $17,863 in 2010. This represents an increase of 22.9 percent in the average

  4. XML for catalogers and metadata librarians

    CERN Document Server

    Cole, Timothy W

    2013-01-01

    How are today's librarians to manage and describe the everexpanding volumes of resources, in both digital and print formats? The use of XML in cataloging and metadata workflows can improve metadata quality, the consistency of cataloging workflows, and adherence to standards. This book is intended to enable current and future catalogers and metadata librarians to progress beyond a bare surfacelevel acquaintance with XML, thereby enabling them to integrate XML technologies more fully into their cataloging workflows. Building on the wealth of work on library descriptive practices, cataloging, and metadata, XML for Catalogers and Metadata Librarians explores the use of XML to serialize, process, share, and manage library catalog and metadata records. The authors' expert treatment of the topic is written to be accessible to those with little or no prior practical knowledge of or experience with how XML is used. Readers will gain an educated appreciation of the nuances of XML and grasp the benefit of more advanced ...

  5. IRAS 01005+7910: a High Galactic Latitude Post-AGB Star

    Institute of Scientific and Technical Information of China (English)

    2002-01-01

    IRAS 01005+7910 is a cold IRAS source. We present its optical identi-fication, photometric and spectroscopic observation results. Its optical counterpartis classified as a B2Ie star with V magnitude 10.85. Its Hα line shows the P Cygniprofile. According to its location in the Galaxy (b = 16.6), we consider it to be apost-AGB star or a proto-planetary nebula.

  6. IRAS 19111+2555 (=S Lyr): A Possible Silicate Carbon Star

    Institute of Scientific and Technical Information of China (English)

    2001-01-01

    The properties and classification of IRAS 19111+2555 have so far not been well determined. We collect all the available information and data of this star,and take the data obtained by IRAS LRS and ISO SWS to discuss its properties and classification. The star is found to have a 3.1μm feature in absorption and a 10μm feature in emission, so it is possibly a new silicate carbon star.

  7. High-Velocity Interstellar Bullets in IRAS05506+2414: A Very Young Protostar

    CERN Document Server

    Sahai, Raghvendra; Contreras, Carmen Sánchez; Morris, Mark; Sarkar, Geetanjali

    2008-01-01

    We have made a serendipitous discovery of an enigmatic outflow source, IRAS 05506+2414 (hereafter IRAS 05506), as part of a multi-wavelength survey of pre-planetary nebulae (PPNs). The HST optical and near-infrared images show a bright compact central source with a jet-like extension, and a fan-like spray of high-velocity (with radial velocities upto 350 kms/s) elongated knots which appear to emanate from it. These structures are possibly analogous to the near-IR "bullets" seen in the Orion nebula. Interferometric observations at 2.6 mm show the presence of a high-velocity CO outflow and a continuum source also with a faint extension, both of which are aligned with the optical jet structure. IRAS 05506 is most likely not a PPN. We find extended NH3 (1,1) emission towards IRAS 05506; these data together with the combined presence of far-IR emission, H2O and OH masers, and CO and CS J=2-1 emission, strongly argue for a dense, dusty star-forming core associated with IRAS 05506. IRAS 05506 is probably an intermed...

  8. The properties of the high-mass star formation region IRAS22475+5939

    CERN Document Server

    Liu, X -L

    2012-01-01

    IRAS22475+5939 has been well researched by previous astronomers. But we still get some new characteristics about it, using the first observations in lines of CO J=2-1,13CO J=2-1,13CO J=3-2 by the KOSMA 3 m telescope. The mapping of the intensity ratio of 13CO J=3-2 and 13CO J=2-1 shows the distribution of the temperature with two peaks, which don't coincide with IRAS22475+5939 source and the center of the HII region, but at the edge of the HII region. The overlays of the Spitzer IRAC 8um and CO contours indicate that they are associated with each other and the strongest polycyclic aromatic hydrocarbons (PAHs) emission is at the position of IRAS22475+5939 source. While the IRAS LRS spectrum at 7-23 um and the PHT-s spectrum at 2-12 um of IRAS22475+5939 source also exhibit strong PAHs emission characters at the main PAH bands. The diversity of PAH family should be responsible for the plateaus of PAHs emission in the PHT-s spectrum and the IRAS-LRS spectrum. An analysis and modeling in infrared bands suggest tha...

  9. Focal waveforms for various source waveforms driving a prolate-spheroidal impulse radiating antenna (IRA)

    Science.gov (United States)

    Altunc, Serhat; Baum, Carl E.; Christodoulou, Christos G.; Schamiloglu, Edl; Buchenauer, C. Jerald

    2008-08-01

    Impulse radiating antennas (IRAs) are designed to radiate very fast pulses in a narrow beam with low dispersion and high field amplitude. For this reason they have been used in a variety of applications. IRAs have been developed for use in the transient far-field region using parabolic reflectors. However, in this paper we focus in the near field region and develop the field waveform at the second focus of a prolate-spheroidal IRA. Certain skin cancers can be killed by the application of a high-amplitude electric field pulse. This can be accomplished by either inserting electrodes near the skin cancer or by applying fast, high-electric field pulses without direct contact. We investigate a new manifestation of an IRA, in which we use a prolate spheroid as a reflector instead of a parabolic reflector and focus in the near-field region instead of the far-field region. This technique minimizes skin damage associated with inserting electrodes near the tumor. Analytical and experimental behaviors for the focal waveforms of two and four-feed arm prolate-spheroidal IRAs are explored. With appropriate choice of the driving waveform we maximize the impulse field at the second focus. The focal waveform of a prolate-spheroidal IRA has been explained theoretically and verified experimentally.

  10. The evolutionary status of dense cores in the NGC 1333 IRAS 4 region

    CERN Document Server

    Koumpia, E; Kwon, W; Tobin, J J; Fuller, G A; Plume, R

    2016-01-01

    Protostellar evolution, following the formation of the protostar is becoming reasonably well characterized, but the evolution from a prestellar core to a protostar is not well known, although the first hydrostatic core (FHSC) must be a pivotal step. NGC 1333 IRAS 4C is a potentially very young object, that we directly compare with the nearby Class 0 IRAS 4A and IRAS 4B. Observational constraints are provided by spectral imaging from the JCMT Spectral Legacy Survey (330-373 GHz) and continuum and line observations from CARMA. We present integrated intensity and velocity maps of several species, including CO, H2CO and CH3OH. The velocity of an observed outflow, the degree of CO depletion, the deuteration of DCO+/HCO+ and gas kinetic temperatures are observational signatures that we present. We report differences between the three sources in four aspects: a) the kinetic temperature is much lower towards IRAS 4C, b) the line profiles of the detected species show strong outflow activity towards IRAS 4A and IRAS 4B...

  11. E-serials cataloging access to continuing and integrating resources via the catalog and the web

    CERN Document Server

    Cole, Jim

    2014-01-01

    This comprehensive guide examines the state of electronic serials cataloging with special attention paid to online capacities. E-Serials Cataloging: Access to Continuing and Integrating Resources via the Catalog and the Web presents a review of the e-serials cataloging methods of the 1990s and discusses the international standards (ISSN, ISBD[ER], AACR2) that are applicable. It puts the concept of online accessibility into historical perspective and offers a look at current applications to consider. Practicing librarians, catalogers and administrators of technical services, cataloging and serv

  12. Monsters and babies from the first/IRAS survey

    Energy Technology Data Exchange (ETDEWEB)

    Van Bruegel, W J M

    1999-02-16

    Radio continuum emission at cm wavelengths is relatively little affected by extinction. When combined with far-infrared (FIR) surveys this provides for a convenient and unbiased method to select (radio-loud) AGN and starbursts deeply embedded in gas and dust-rich galaxies. Such radio-selected FIR samples are useful for detailed investigations of the complex relationships between (radio) galaxy and starburst activity, and to determine whether ULIRGs are powered by hidden quasars (monsters) or young stars (babies). We present the results of a large program to obtain identifications and spectra of radio-sleected, optically faint IRAS/FSC objects using the FIRST/VLA 20 cm survey (Becker, White and Helfand 1995). These objects are all radio-'quiet' in the sense that their radio power/FIR luminosities follow the well-known radio/FIR relationship for star forming galaxies. We compare these results to a previous study by our group of a sample of radio-'loud' IRAS/FSC ULIRGs selected from the Texas 365 MHz survey (Douglas et al. 1996). Many of these objects also show evidence for dominant, A-type stellar populations, as well as high ionization lines usually associated with AGN. These radio-loud ULIRGs have properties intermediate between those of starbursts and quasars, suggesting a possibile evolutionary connection. Deep Keck spectroscopic observations of three ULIRGs from these samples are presented, including high signal-to-noise spectropolarimetry. The polarimetry observations failed to show evidence of a hidden quasar in polarized (scattered) light in the two systems in which the stellar light was dominated by A-type stars. Although observations of a larger sample would be needed to allow a general conclusion, our current data suggest that a large fraction of ULIRGs may be powered by luminous starbursts, not by hidden, luminous AGN (quasars). While we used radio-selected FIR sources to search for evidence of a causal AGN/starburst connection, we

  13. Novel Gbeta Mimic Kelch Proteins (Gpb1 and Gpb2 Connect G-Protein Signaling to Ras via Yeast Neurofibromin Homologs Ira1 and Ira2. A Model for Human NF1

    Science.gov (United States)

    2007-03-01

    Molecular Cell (Harashima et al, 2006). These findings set the stage for studies to examine NF1 and possible mammalian kelch protein homologs of Gpb1...RasGAP neurofibromin homologs Ira1 and Ira2” was published in Molecular Cell on June 23, 2006 (see appendices). 4. Our review on this topic entitled...Heitman, J. The kelch proteins Gpb1 and Gpb2 inhibit Ras activity via assocation with the yeast RasGAP neurofibromin homologs Ira1 and Ira2, Molecular

  14. The Chandra Source Catalog: Processing and Infrastructure

    Science.gov (United States)

    Evans, Janet; Evans, Ian N.; Glotfelty, Kenny J.; Hain, Roger; Hall, Diane M.; Miller, Joseph B.; Plummer, David A.; Zografou, Panagoula; Primini, Francis A.; Anderson, Craig S.; Bonaventura, Nina R.; Chen, Judy C.; Davis, John E.; Doe, Stephen M.; Fabbiano, Giuseppina; Galle, Elizabeth C.; Gibbs, Danny G., II; Grier, John D.; Harbo, Peter N.; He, Xiang Qun (Helen); Houck, John C.; Karovska, Margarita; Kashyap, Vinay L.; Lauer, Jennifer; McCollough, Michael L.; McDowell, Jonathan C.; Mitschang, Arik W.; Morgan, Douglas L.; Mossman, Amy E.; Nichols, Joy S.; Nowak, Michael A.; Refsdal, Brian L.; Rots, Arnold H.; Siemiginowska, Aneta L.; Sundheim, Beth A.; Tibbetts, Michael S.; van Stone, David W.; Winkelman, Sherry L.

    2009-09-01

    Chandra Source Catalog processing recalibrates each observation using the latest available calibration data, and employs a wavelet-based source detection algorithm to identify all the X-ray sources in the field of view. Source properties are then extracted from each detected source that is a candidate for inclusion in the catalog. Catalog processing is completed by matching sources across multiple observations, merging common detections, and applying quality assurance checks. The Chandra Source Catalog processing system shares a common processing infrastructure and utilizes much of the functionality that is built into the Standard Data Processing (SDP) pipeline system that provides calibrated Chandra data to end-users. Other key components of the catalog processing system have been assembled from the portable CIAO data analysis package. Minimal new software tool development has been required to support the science algorithms needed for catalog production. Since processing pipelines must be instantiated for each detected source, the number of pipelines that are run during catalog construction is a factor of order 100 times larger than for SDP. The increased computational load, and inherent parallel nature of the processing, is handled by distributing the workload across a multi-node Beowulf cluster. Modifications to the SDP automated processing application to support catalog processing, and extensions to Chandra Data Archive software to ingest and retrieve catalog products, complete the upgrades to the infrastructure to support catalog processing.

  15. Catalog of databases and reports

    Energy Technology Data Exchange (ETDEWEB)

    Burtis, M.D. [comp.

    1997-04-01

    This catalog provides information about the many reports and materials made available by the US Department of Energy`s (DOE`s) Global Change Research Program (GCRP) and the Carbon Dioxide Information Analysis Center (CDIAC). The catalog is divided into nine sections plus the author and title indexes: Section A--US Department of Energy Global Change Research Program Research Plans and Summaries; Section B--US Department of Energy Global Change Research Program Technical Reports; Section C--US Department of Energy Atmospheric Radiation Measurement (ARM) Program Reports; Section D--Other US Department of Energy Reports; Section E--CDIAC Reports; Section F--CDIAC Numeric Data and Computer Model Distribution; Section G--Other Databases Distributed by CDIAC; Section H--US Department of Agriculture Reports on Response of Vegetation to Carbon Dioxide; and Section I--Other Publications.

  16. Brorfelde Schmidt CCD Catalog (BSCC)

    Science.gov (United States)

    2010-06-23

    reference stars. Errors of individual positions are about 20 to 200 mas for stars in the R = 10 to 18 mag range. External comparisons with 2MASS and SDSS ...description of the resulting cat- alog. External comparisons were performed with the Sloan Digital Sky Survey ( SDSS ) release 7 data (www.sdss.org/DR7...with 2MASS and SDSS reveal possible small systematic errors in the BSCC of up to about 30 mas. The catalog is supplemented with J, H, and Ks

  17. The Hubble Catalog of Variables

    Science.gov (United States)

    Sokolovsky, K.; Bonanos, A.; Gavras, P.; Yang, M.; Hatzidimitriou, D.; Moretti, M. I.; Karampelas, A.; Bellas-Velidis, I.; Spetsieri, Z.; Pouliasis, E.; Georgantopoulos, I.; Charmandaris, V.; Tsinganos, K.; Laskaris, N.; Kakaletris, G.; Nota, A.; Lennon, D.; Arviset, C.; Whitmore, B.; Budavari, T.; Downes, R.; Lubow, S.; Rest, A.; Strolger, L.; White, R.

    2017-09-01

    We aim to construct an exceptionally deep (V ≲ 27) catalog of variable objects in selected Galactic and extragalactic fields visited multiple times by the Hubble Space Telescope (HST). While HST observations of some of these fields were searched for specific types of variables before (most notably, the extragalactic Cepheids), we attempt a systematic study of the population of variable objects of all types at the magnitude range not easily accessible with ground-based telescopes. The variability timescales that can be probed range from hours to years depending on how often a particular field has been visited. For source extraction and cross-matching of sources between visits we rely on the Hubble Source Catalog which includes 107 objects detected with WFPC2, ACS, and WFC3 HST instruments. The lightcurves extracted from the HSC are corrected for systematic effects by applying local zero-point corrections and are screened for bad measurements. For each lightcurve we compute variability indices sensitive to a broad range of variability types. The indices characterize the overall lightcurve scatter and smoothness. Candidate variables are selected as having variability index values significantly higher than expected for objects of similar brightness in the given set of observations. The Hubble Catalog of Variables will be released in 2018.

  18. The Hubble Catalog of Variables

    Directory of Open Access Journals (Sweden)

    Sokolovsky K.

    2017-01-01

    Full Text Available We aim to construct an exceptionally deep (V ≲ 27 catalog of variable objects in selected Galactic and extragalactic fields visited multiple times by the Hubble Space Telescope (HST. While HST observations of some of these fields were searched for specific types of variables before (most notably, the extragalactic Cepheids, we attempt a systematic study of the population of variable objects of all types at the magnitude range not easily accessible with ground-based telescopes. The variability timescales that can be probed range from hours to years depending on how often a particular field has been visited. For source extraction and cross-matching of sources between visits we rely on the Hubble Source Catalog which includes 107 objects detected with WFPC2, ACS, and WFC3 HST instruments. The lightcurves extracted from the HSC are corrected for systematic effects by applying local zero-point corrections and are screened for bad measurements. For each lightcurve we compute variability indices sensitive to a broad range of variability types. The indices characterize the overall lightcurve scatter and smoothness. Candidate variables are selected as having variability index values significantly higher than expected for objects of similar brightness in the given set of observations. The Hubble Catalog of Variables will be released in 2018.

  19. The IRAS 08589-4714 star-forming region

    CERN Document Server

    Saldaño, H P; Gómez, M; Cappa, C E; Duronea, N U; Rubio, M

    2016-01-01

    We present an analysis of the IRAS 08589-4714 star-forming region. This region harbors candidate young stellar objects identified in the WISE and Herschel images using color index criteria and spectral energy distributions (SEDs). The SEDs of some of the infrared sources and the 70 microns radial intensity profile of the brightest source (IRS 1) are modeled from Herschel fluxes using the one-dimensional radiative transfer DUSTY code. For these objects, we estimate the envelope masses, sizes, densities, and luminosities which suggest that they are very young, massive and luminous objects at early stages of the formation process. Color-color diagrams in the bands of WISE and 2MASS are used to identify potential young objects in the region. Those identified in the bands of WISE would be contaminated by the emission of PAHs. We use the emission distribution in the infrared at 70 and 160 microns, to estimate the dust temperature gradient. This suggests that the nearby massive star-forming region RCW 38, located ~ ...

  20. A young bipolar outflow from IRAS 15398-3359

    CERN Document Server

    Bjerkeli, P; Brinch, C

    2016-01-01

    Changing physical conditions in the vicinity of protostars allow for a rich and interesting chemistry to occur. Heating and cooling of the gas allows molecules to be released from and frozen out on dust grains. These changes in physics, traced by chemistry, as well as the kinematical information allows us to distinguish between different scenarios describing the infall of matter and the launching of molecular outflows and jets. We aim at determining the spatial distribution of different species, of different chemical origin. This is to examine the physical processes in play in the observed region. From the kinematical information of the emission lines we aim at determining the nature of the infalling and outflowing gas in the system. We also aim at determining the physical properties of the outflow. Maps from the Sub-Millimeter Array reveal the spatial distribution of the gaseous emission toward IRAS15398-3359. The line radiative transfer code LIME is used to construct a full 3D model of the system taking all...

  1. VLA observations of ultraluminous IRAS galaxies active nuclei or starbursts?

    CERN Document Server

    Crawford, T; Partridge, B; Strauss, M; Crawford, Thomas; Marr, Jon; Partridge, Bruce; Strauss, Michael

    1995-01-01

    We employed the Very Large Array (VLA) of the National Radio Astronomy Observatory in C configuration to map 39 ultraluminous IRAS galaxies at 6~cm and 20~cm, at resolutions of ~ 4" and 15", respectively, and 24 sources at 6~cm with in the A configuration with a resolution of ~0.5". Most of the sources have radio spectral indices indicative of synchrotron emission (alpha ~ -0.65). There is one source, however, that shows an inverted spectrum with alpha = +2.1; observations at higher frequencies show that the spectrum peaks between 5 and 8 GHz, as high as any of the ``gigahertz peaked spectrum'' sources studied by O'Dea etal. We discuss the implications of this source for observations of fluctuations in the CMB. Two of the sources show multiple unresolved components, another four are doubles with at least one resolved component, 14 show extended emission which could arise from a disk, and two show arc-second long jets. Our data fit the tight correlation found by Helou etal (1985) between far-infrared and micro...

  2. A spectroscopic study of IRAS F10214+4724

    CERN Document Server

    Serjeant, S; Lacy, M; McMahon, R G; Lawrence, A; Rowan-Robinson, M; Mountain, M; Serjeant, Stephen; Rawlings, Steve; Lacy, Mark; Mahon, Richard G. Mc; Lawrence, Andy; Rowan-Robinson, Michael; Mountain, Matt

    1998-01-01

    The z=2.286 IRAS galaxy F10214+4724 remains one of the most luminous galaxies in the Universe, despite its gravitational lens magnification. We present optical and near-infrared spectra of F10214+4724, with clear evidence for three distinct components: lines of width ~1000 km/s from a Seyfert-II nucleus; <~200 km/s lines which are likely to be associated with star formation; and a broad ~4000 km/s CIII] 1909ang emission line which is blue-shifted by ~1000 km/s with respect to the Seyfert-II lines. Our study of the Seyfert-II component leads to several new results, including: (i) From the double-peaked structure in the Ly alpha line, and the lack of Ly beta, we argue that the Ly alpha photons have emerged through a neutral column of N_H ~ 2.5 x 10^{25}/m^2, possibly located within the AGN narrow-line region as argued in several high redshift radiogalaxies. (ii) The resonant O VI 1032,1036ang doublet (previously identified as Ly beta) is in an optically thick (1:1) ratio. At face value this implies an an ext...

  3. Multiple jets from the young star IRAS 21334 + 5039

    Science.gov (United States)

    Smith, Howard A.; Fischer, Jacqueline

    1992-01-01

    The source IRAS 21334 + 5039, a young stellar object (YSO) with broad CO outflow velocity profiles, was imaged in the 1-2 micron region with broad-band J, H, and K filters, and with a Fabry-Perot set to the molecular hydorgen v = 1-0 S(1) line, the hydrogen Br-gamma recombination line, and the neighboring continua. At 2 microns the source has an elongated continuum emission structure centered on the star. The structure has very blue tips, with a weak VLA 6 cm continuum source coincident with one of them. Strong molecular hydrogen emission appears as bow-shaped arcs oriented along an axis perpendicular to the continuum emission, and as a weaker structure aligned with it. Both the continuum and the molecular hydrogen emission are most likely produced by jets, possibly emanating in multiple directions from the central source at large angles to each other. While jets are a common feature of young stars, this source provides solid evidence for multiple jet structures.

  4. The Environment of Sy1, Sy2 & Bright IRAS Galaxies

    CERN Document Server

    Koulouridis, E; Plionis, M; Dultzin, D; Krongold, Y; Goudis, C; Chatzichristou, E

    2008-01-01

    We present a 3-dimensional study of the local (< 100 kpc) environment of Sy1, Sy2 and Bright IRAS Galaxies. For this purpose we use three galaxy samples (Sy1, Sy2, BIRG) located at high galactic latitudes as well as three control sample of non-active galaxies having the same morphological, redshift and diameter size distributions as the corresponding Seyfert or BIRG sample. Using the CfA2 and SSRS galaxy catalogues as well as our own spectroscopic observations, we find that the fraction of BIRGs with a close neighbor is significantly higher than that of their control sample. We also find that Sy2 galaxies demonstrate the same behaviour with BIRG galaxies but not with Sy1s which do not show any excess of companions with respect to their control sample galaxies. An additional analysis of the relation between FIR colors and activity type of the BIRG's shows a significant difference between the colors of strongly-interacting and non-interacting starbursts and a resemblance between the colors of non-interacting...

  5. The K2-TESS Stellar Properties Catalog

    CERN Document Server

    Stassun, Keivan G; Paegert, Martin; De Lee, Nathan; Sanchis-Ojeda, Roberto

    2014-01-01

    We introduce a catalog of stellar properties for stars observed by the Kepler follow-on mission, K2. We base the catalog on a cross-match between the K2 Campaign target lists and the current working version of the NASA TESS target catalog. The resulting K2-TESS Stellar Properties Catalog includes value-added information from the TESS Target Catalog, including stellar colors, proper motions, and an estimated luminosity class (dwarf/subgiant versus giant) for each star based on a reduced-proper-motion criterion. Also included is the Guest Observer program identification number(s) associated with each K2 target. The K2-TESS Stellar Properties Catalog is available to the community as a freely accessible data portal on the Filtergraph system at: http://filtergraph.vanderbilt.edu/tess_k2campaigns .

  6. A Highly Available Grid Metadata Catalog

    DEFF Research Database (Denmark)

    Jensen, Henrik Thostrup; Kleist, Joshva

    2009-01-01

    This article presents a metadata catalog, intended foruse in grids. The catalog provides high availability, by replication across several hosts. The replicas are kept consistent using a replication protocol based on the Paxos algorithm. A majority of the replicas must be available in order...... for the system to function. The data model used in the catalog is RDF, which allows users to create theirown name spaces and schemas. Querying is performed using SPARQL. Additionally the catalog can be used as a synchronization mechanism, by utilizing a compare and swap operation. The catalog is accessed using...... HTTP with proxy certificates, and uses GACL for flexible access control.The performance of the catalog is tested in several ways, including a distributed setup between geographically separated sites....

  7. The Complete Infrared View of Active Galactic Nuclei from the 70-month Swift/BAT Catalog

    CERN Document Server

    Ichikawa, Kohei; Ueda, Yoshihiro; Matsuoka, Kenta; Toba, Yoshiki; Kawamuro, Taiki; Trakhtenbrot, Benny; Koss, Michael J

    2016-01-01

    We systematically investigate the near- (NIR) to far-infrared (FIR) photometric properties of a nearly complete sample of local active galactic nuclei (AGN) detected in the Swift/Burst Alert Telescope (BAT) all-sky ultra hard X-ray (14-195 keV) survey. Out of 606 non-blazar AGN in the Swift/BAT 70-month catalog at high galactic latitude of $|b|>10^{\\circ}$, we obtain IR photometric data of 604 objects by cross-matching the AGN positions with catalogs from the WISE, AKARI, IRAS, and Herschel infrared observatories. We find a good correlation between the ultra-hard X-ray and mid-IR (MIR) luminosities over five orders of magnitude ($41 < \\log (L_{14-195}/{\\rm erg}~{\\rm s}^{-1})< 46$). Informed by previous measures of the intrinsic spectral energy distribution of AGN, we find FIR pure-AGN candidates whose FIR emission is thought to be AGN-dominated with low starformation activity. We demonstrate that the dust covering factor decreases with the bolometric AGN luminosity, confirming the luminosity-dependent u...

  8. Ethics in service cataloging: a literature review

    Directory of Open Access Journals (Sweden)

    Edinei Antonio Moreno

    2015-04-01

    Full Text Available Objective: The study analyzes the presence of ethics in cataloging service performed by the librarian. Method: The study used the method of literature review. Results: The results obtained are the conceptualization of ethics term ; affirmation of the importance of information technologies and communication for cataloging service and information retrieval systems ; the ethical role of the librarian in cataloging service. Conclusions: The bibliographic review allowed to make proposals for future studies in the field of Library and Information Science.

  9. Weapon container catalog. Volumes 1 & 2

    Energy Technology Data Exchange (ETDEWEB)

    Brown, L.A.; Higuera, M.C.

    1998-02-01

    The Weapon Container Catalog describes H-gear (shipping and storage containers, bomb hand trucks and the ancillary equipment required for loading) used for weapon programs and for special use containers. When completed, the catalog will contain five volumes. Volume 1 for enduring stockpile programs (B53, B61, B83, W62, W76, W78, W80, W84, W87, and W88) and Volume 2, Special Use Containers, are being released. The catalog is intended as a source of information for weapon program engineers and also provides historical information. The catalog also will be published on the SNL Internal Web and will undergo periodic updates.

  10. VizieR Online Data Catalog: The 2WHSP catalog (Chang+, 2017)

    Science.gov (United States)

    Chang, Y.-L.; Arsioli, B.; Giommi, P.; Padovani, P.

    2016-09-01

    The 2WHSP catalog is a multi-frequency catalog of HSP. It contains 1691 sources, 288 of which are newly identified HSPs, 540 are previously known HSPs, 814 are HSP candidates, 45 are HSP blazars taken from the 2FHL catalog, and 4 from TeVcat. (1 data file).

  11. Innate Response Activator (IRA) B Cells Reside in Human Tonsils and Internalize Bacteria In Vitro.

    Science.gov (United States)

    Chiappini, Nico; Cantisani, Rocco; Pancotto, Laura; Ruggiero, Paolo; Rosa, Domenico; Manetti, Andrea; Romano, Antonio; Montagnani, Francesca; Bertholet, Sylvie; Castellino, Flora; Del Giudice, Giuseppe

    2015-01-01

    Innate response activator (IRA) B cells have been described in mice as a subset of B-1a B cells that produce granulocyte/macrophage colony-stimulating factor (GM-CSF) and have been found in the spleen upon activation. In humans, identification, tissue localization and functionality of these lymphocytes are poorly understood. We hypothesized that IRA B cells could reside in human palatine tonsils, which are a first line of defense from infection of the upper respiratory tract. In the present work, we used flow cytometry and confocal microscopy to identify and characterize human IRA (hIRA) B cells in tonsils. We show that CD19⁺CD20⁺GM-CSF⁺ B cells are present in the tonsils of all the subjects studied at a frequency ranging between ~0.2% and ~0.4% of the conventional CD19⁺CD20⁺GM-CSF⁻ B cells. These cells reside within the B cell follicles, are mostly IgM⁺IgD⁺, express CD5 and show phagocytic activity. Our results support a role for hIRA B cells in the effector immune response to infections in tonsils.

  12. Innate Response Activator (IRA B Cells Reside in Human Tonsils and Internalize Bacteria In Vitro.

    Directory of Open Access Journals (Sweden)

    Nico Chiappini

    Full Text Available Innate response activator (IRA B cells have been described in mice as a subset of B-1a B cells that produce granulocyte/macrophage colony-stimulating factor (GM-CSF and have been found in the spleen upon activation. In humans, identification, tissue localization and functionality of these lymphocytes are poorly understood. We hypothesized that IRA B cells could reside in human palatine tonsils, which are a first line of defense from infection of the upper respiratory tract. In the present work, we used flow cytometry and confocal microscopy to identify and characterize human IRA (hIRA B cells in tonsils. We show that CD19⁺CD20⁺GM-CSF⁺ B cells are present in the tonsils of all the subjects studied at a frequency ranging between ~0.2% and ~0.4% of the conventional CD19⁺CD20⁺GM-CSF⁻ B cells. These cells reside within the B cell follicles, are mostly IgM⁺IgD⁺, express CD5 and show phagocytic activity. Our results support a role for hIRA B cells in the effector immune response to infections in tonsils.

  13. AKARI Infrared Camera Survey of the Large Magellanic Cloud. I. Point Source Catalog

    CERN Document Server

    Kato, Daisuke; Onaka, Takashi; Tanabe, Toshihiko; Shimonishi, Takashi; Sakon, Itsuki; Kaneda, Hidehiro; Kawamura, Akiko; Wada, Takehiko; Usui, Fumihiko; Koo, Bon-Chul; Matsuura, Mikako; Takahashi, Hidenori

    2012-01-01

    We present a near- to mid-infrared point source catalog of 5 photometric bands at 3.2, 7, 11, 15 and 24 um for a 10 deg2 area of the Large Magellanic Cloud (LMC) obtained with the Infrared Camera (IRC) onboard the AKARI satellite. To cover the survey area the observations were carried out at 3 separate seasons from 2006 May to June, 2006 October to December, and 2007 March to July. The 10-sigma limiting magnitudes of the present survey are 17.9, 13.8, 12.4, 9.9, and 8.6 mag at 3.2, 7, 11, 15 and 24 um, respectively. The photometric accuracy is estimated to be about 0.1 mag at 3.2 um and 0.06--0.07 mag in the other bands. The position accuracy is 0.3" at 3.2, 7 and 11um and 1.0" at 15 and 24 um. The sensitivities at 3.2, 7, and 24 um are roughly comparable to those of the Spitzer SAGE LMC point source catalog, while the AKARI catalog provides the data at 11 and 15 um, covering the mid-infrared spectral range contiguously. Two types of catalog are provided: a Catalog and an Archive. The Archive contains all the...

  14. A Starfish Preplanetary Nebula: IRAS 19024+0044

    Science.gov (United States)

    Sahai, Raghvendra; Sanchez Contreras, Carmen; Morris, Mark

    2005-01-01

    Using the Hubble Space Telescope, we have imaged the OH/IR star IRAS 19024+0044 (I19024) at 0.6, 0.8, 1.1, and 1.6 micrometers, as part of our surveys of candidate preplanetary nebulae. The images show a multipolar nebula of size approximately equal to 3.'7 2.'3, with at least six elongated lobes emanating from the center of the nebula. Two of the lobes show limb-brightened tips having point-symmetric structure with respect to the expected location of the central star. The central region shows two dark bands southwest and northeast of a central shallow maximum that may be either two inclined dusty toroidal structures or the dense parts of a single wide, inhomogeneous, toroid. Avery faint, surface brightness-limited, diffuse halo surrounds the lobes. Long-slit/echelle optical spectroscopy obtained at the Mount Palomar and Keck observatories shows a spatially compact source of H(alpha) emission; the H(alpha) line shows a strong, narrow, central core with very broad (+/-1000 km/sec), weak wings, and a narrower blueshifted absorption feature signifying the presence of an approximately 100 km/sec(exp -1) outflow. The spectrum is characterized by a strong, relatively featureless, continuum and lacks the strong forbidden emission lines characteristic of planetary nebulae, confirming that IRAS 19024 is a preplanetary nebula; the spectral type for the central star, although uncertain, is most likely early G. Interferometric observations of the CO J = 1 -0 line emission with the Owens Valley Radio Interferometer show a marginally resolved molecular envelope (size 5.'5 x 4.'4) with an expansion velocity of 13 km/sec (exp -1), resulting from the asymptotic giant branch (AGB) progenitor's dense, slow wind. We derive a kinematic distance of 3.5 kpc to I19024, based on its radial velocity. The bolometric flux is 7:3 x 10(exp -9) erg s(exp -1) cm(exp -2), and the luminosity 2850 L. The relatively low luminosity of I19024, in comparison with stellar evolutionary models, indicates

  15. Soft X-ray Properties of Ultraluminous IRAS Galaxies

    Institute of Scientific and Technical Information of China (English)

    2001-01-01

    We report on the results of cross-correlation of a sample of 903 Ultra luminous IRAS galaxies (ULIRGs) with the ROSAT-All Sky Survey Bright Source Catalogue and the ROSAT archived pointing observations. The sample of ULIRGs has been compiled from the recently released PSCz redshift survey. In total, 35 ULIRGs are securely detected by the ROSAT All-Sky Survey and pointing observa tions, five of which are blazars. The statistical properties of these sources in the soft X-ray band are determined and compared with their properties in other wavebands. We find that the ratio of the soft X-ray to the far-infrared flux spans about five orders of magnitude and reaches values of about unity. This ratio is a good indi cator of the main energy source of ULIRGs. Those with soft X-ray to far-infrared flux exceeding 0.01 are probably powered by accretion onto central supermassive black holes while those with ratios smaller than 0.001 are probably powered by starbursts or other heating processes, or are Compton thick sources. Some ULIRGs have energy contributions from both. This ratio is low for most ULIRGs and hy perluminous infrared galaxies, which explains their low detection rate by ROSAT and ASCA. We also find that some ULIRGs have a similar soft X-ray luminosity vs. temperature relation to that for groups of galaxies and elliptical galaxies, suggest ing a common origin of these systems. Our study also reveals a tight correlation between the hardness ratio and the soft X-ray luminosity for Seyfert ls/QSOs.

  16. THE EXTENDED VIRGO CLUSTER CATALOG

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Suk; Rey, Soo-Chang; Lee, Youngdae; Chung, Jiwon; Pak, Mina; Yi, Wonhyeong; Lee, Woong [Department of Astronomy and Space Science, Chungnam National University, 99 Daehak-ro, Daejeon 305-764 (Korea, Republic of); Jerjen, Helmut [Research School of Astronomy and Astrophysics, The Australian National University, Cotter Road, Weston, ACT 2611 (Australia); Lisker, Thorsten [Astronomisches Rechen-Institut, Zentrum für Astronomie der Universität Heidelberg (ZAH), Mönchhofstraße 12-14, D-69120 Heidelberg (Germany); Sung, Eon-Chang [Korea Astronomy and Space Science institute, 776 Daedeokdae-ro, Daejeon 305-348 (Korea, Republic of)

    2015-01-01

    We present a new catalog of galaxies in the wider region of the Virgo cluster, based on the Sloan Digital Sky Survey (SDSS) Data Release 7. The Extended Virgo Cluster Catalog (EVCC) covers an area of 725 deg{sup 2} or 60.1 Mpc{sup 2}. It is 5.2 times larger than the footprint of the classical Virgo Cluster Catalog (VCC) and reaches out to 3.5 times the virial radius of the Virgo cluster. We selected 1324 spectroscopically targeted galaxies with radial velocities less than 3000 km s{sup –1}. In addition, 265 galaxies that have been overlooked in the SDSS spectroscopic survey but have available redshifts in the NASA Extragalactic Database are also included. Our selection process secured a total of 1589 galaxies, 676 of which are not included in the VCC. The certain and possible cluster members are defined by means of redshift comparison with a cluster infall model. We employed two independent and complementary galaxy classification schemes: the traditional morphological classification based on the visual inspection of optical images and a characterization of galaxies from their spectroscopic features. SDSS u, g, r, i, and z passband photometry of all EVCC galaxies was performed using Source Extractor. We compare the EVCC galaxies with the VCC in terms of morphology, spatial distribution, and luminosity function. The EVCC defines a comprehensive galaxy sample covering a wider range in galaxy density that is significantly different from the inner region of the Virgo cluster. It will be the foundation for forthcoming galaxy evolution studies in the extended Virgo cluster region, complementing ongoing and planned Virgo cluster surveys at various wavelengths.

  17. Satellite Tracking Astrometric Network (STAN)

    Science.gov (United States)

    Vecchiato, Alberto; Gai, Mario

    2015-08-01

    The possibility of precise orbit tracking and determination of different types of satellites has been explored for at least some 25 years (Arimoto et al., 1990). Proposals in this sense made use mainly of astrometric observations, but multiple tracking techniques combining transfer and laser ranging was also suggested (Guo et al., 2009; Montojo et al., 2011), with different requirements and performances ranging from $\\sim100$~m to tenths of meters.In this work we explore the possible improvements and a novel implementation of a technique relying on large angle, high precision astrometry from ground for the determination of satellite orbits. The concept is based on combined observation of geostationary satellites and other near-Earth space objects from two or more telescopes, applying the triangulation principle over widely separated regions of the sky. An accuracy of a few $10^{-2}$~m can be attained with 1-meter-class telescopes and a field of vied of some arcminutes.We discuss the feasibility of the technique, some of the implementation aspects, and the limitations imposed by atmospheric turbulence. The potential benefits for satellite orbit control and navigation systems are presented, depending on the number and position of the contributing telescopes.We also discuss the possibility that, by reversing the roles of stars and satellites, the same kind of observations can be used for verification and maintenance of astrometric catalogs.

  18. Complex molecules in the hot core of the low-mass protostar NGC 1333 IRAS 4A

    NARCIS (Netherlands)

    Bottinelli, S; Ceccarelli, C; Lefloch, B; Williams, JP; Castets, A; Caux, E; Cazaux, S; Maret, S; Parise, B; Tielens, AGGM

    2004-01-01

    We report the detection of complex molecules (HCOOCH3, HCOOH, and CH3CN), signposts of a hot core like region, toward the low-mass Class 0 source NGC 1333 IRAS 4A. This is the second low-mass protostar in which such complex molecules have been searched for and reported, the other source being IRAS

  19. Molecular variation and evolution of the tyrosine kinase domains of insulin receptor IRa and IRb genes in Cyprinidae.

    Science.gov (United States)

    Kong, XiangHui; Wang, XuZhen; He, ShunPing

    2011-07-01

    The insulin receptor (IR) gene plays an important role in regulating cell growth, differentiation and development. In the present study, DNA sequences of insulin receptor genes, IRa and IRb, were amplified and sequenced from 37 representative species of the Cyprinidae and from five outgroup species from non-cyprinid Cypriniformes. Based on coding sequences (CDS) of tyrosine kinase regions of IRa and IRb, molecular evolution and phylogenetic relationships were analyzed to better understand the characteristics of IR gene divergence in the family Cyprinidae. IRa and IRb were clustered into one lineage in the gene tree of the IR gene family, reconstructed using the unweighted pair group method with arithmetic mean (UPGMA). IRa and IRb have evolved into distinct genes after IR gene duplication in Cyprinidae. For each gene, molecular evolution analyses showed that there was no significant difference among different groups in the reconstructed maximum parsimony (MP) tree of Cyprinidae; IRa and IRb have been subjected to similar evolutionary pressure among different lineages. Although the amino acid sequences of IRa and IRb tyrosine kinase regions were highly conserved, our analyses showed that there were clear sequence variations between the tyrosine kinase regions of IRa and IRb proteins. This indicates that IRa and IRb proteins might play different roles in the insulin signaling pathway.

  20. IRAS 18357-0604 - an analogue of the galactic yellow hypergiant IRC +10420?

    CERN Document Server

    Clark, J S; Gonzalez-Fernandez, C

    2013-01-01

    Yellow hypergiants represent a short-lived evolutionary episode experienced by massive stars as they transit to and from a red supergiant phase. As such, their properties provide a critical test of stellar evolutionary theory. The galactic yellow hypergiant IRC +10420 is a cornerstone system for understanding this phase, since it is the strongest post-RSG candidate known, has demonstrated real-time evolution across the Hertzsprung-Russell diagram and been subject to extensive mass loss. Here we report on the discovery of a twin of IRC +10420 - IRAS 18357-0604. Optical and near-IR spectroscopy are used to investigate the physical properties of IRAS 18357-0604, while IR photometry probes the nature of its circumstellar environment. Pronounced spectral similarities between IRAS 18357-0604 and IRC +10420 suggest comparable temperatures and wind geometries, while photometric data reveals a similarly dusty circumstellar environment, although historical mass loss appears to have been heavier in IRC +10420. The syste...

  1. El miedo y la ira como estrategia en las campañas electorales

    Directory of Open Access Journals (Sweden)

    Andrés Valdez Zepeda

    2012-01-01

    Full Text Available En el escrito se hace un análisis del uso del miedo y la ira como estrategia política usada en las campañas electorales. Además, en el trabajo se desarrollan dos modelos de articulación estratégica sustentados en el uso de estas dos emociones primarias del ser humano. También, se presentan diversos ejemplos del uso del miedo y la ira como estrategia para ganar votos en algunas elecciones presidenciales de América latina. Se concluye que, en una sociedad democrática, ganará el poder el partido o candidato que sea más competente en la gestión y movilización del miedo y la ira entre los electores.

  2. Comparison of chitin and Amberlite IRA-938 for alpha-galactosidase immobilization.

    Science.gov (United States)

    Onal, Seçil; Telefoncu, Azmi

    2003-02-01

    Watermelon alpha-galactosidase (EC 3.2.1.22) was immobilized on a natural (chitin) and a synthetic anion-exchange (Amberlite IRA-938) support by covalent coupling methods. The procedure entails the activation of supports with 1,1'-carbonyldiimidazole (CDI), followed by immobilization of the enzyme on to these supports without and with a spacer arm; gamma-aminobutyric acid (GABA). Optimization of activation was performed by changing the CDI concentrations and coupling efficiencies. The comparison of two immobilization techniques for both chitin and Amberlite IRA-938 was made by comparing different enzyme concentrations against enzyme activity yield. Furthermore, the storage stability of the immobilized enzymes was also investigated and chitin immobilized alpha-galactosidase was found to be better. Although the activity yield of immobilized enzymes were the same for both supports, the short storage stability of immobilized enzyme on Amberlite IRA-938 is currently a drawback to its applications.

  3. Effect of Growth on Fatty Acid Composition of Total Intramuscular Lipid and Phospholipids in Ira Rabbits.

    Science.gov (United States)

    Xue, Shan; He, Zhifei; Lu, Jingzhi; Tao, Xiaoqi; Zheng, Li; Xie, Yuejie; Xiao, Xia; Peng, Rong; Li, Hongjun

    2015-01-01

    The changes in fatty acid composition of total intramuscular lipid and phospholipids were investigated in the longissimus dorsi, left-hind leg muscle, and abdominal muscle of male Ira rabbits. Changes were monitored at 35, 45, 60, 75, and 90 d. Analysis using gas chromatography identified 21 types of fatty acids. Results showed that the intramuscular lipid increased and the intramuscular phospholipids (total intramuscular lipid %) decreased in all muscles with increasing age (pIra rabbits at different ages and muscles. Palmitic acid (C16:0), stearic acid (C18:0), oleic acid (C18:1), linoleic acid (C18:2), and arachidonic acid (C20:4) were the major fatty acids, which account to the dynamic changes of the n-6/n-3 value in Ira rabbit meat.

  4. Not the next IRA: how health savings accounts shape public opinion.

    Science.gov (United States)

    Barabas, Jason

    2009-04-01

    Scholars suspect that public policies affect public opinion, but the empirical evidence is mixed, and contemporary theories advance offsetting predictions. This study examines two allegedly similar private investment account programs that differ in politically relevant ways. Statistical analyses show that owners of Individual Retirement Accounts (IRAs) and Health Savings Accounts (HSAs) experience policy feedback effects, but in opposite directions. More specifically, matched comparisons of respondents in a national survey indicate that IRA participants are more likely to favor Social Security privatization than individuals without IRAs. In contrast, HSA participants are less likely to prefer consumer-driven health coverage in which individuals are empowered to make choices. Overall, the findings suggest that policies alter public opinion preferences but that the effects depend on programmatic design and performance.

  5. Satellite RNAs and Satellite Viruses.

    Science.gov (United States)

    Palukaitis, Peter

    2016-03-01

    Satellite RNAs and satellite viruses are extraviral components that can affect either the pathogenicity, the accumulation, or both of their associated viruses while themselves being dependent on the associated viruses as helper viruses for their infection. Most of these satellite RNAs are noncoding RNAs, and in many cases, have been shown to alter the interaction of their helper viruses with their hosts. In only a few cases have the functions of these satellite RNAs in such interactions been studied in detail. In particular, work on the satellite RNAs of Cucumber mosaic virus and Turnip crinkle virus have provided novel insights into RNAs functioning as noncoding RNAs. These effects are described and potential roles for satellite RNAs in the processes involved in symptom intensification or attenuation are discussed. In most cases, models describing these roles involve some aspect of RNA silencing or its suppression, either directly or indirectly involving the particular satellite RNA.

  6. First MERLIN Observations of Line Emission from the OH Megamaser toward IRAS 10173+0828

    Institute of Scientific and Technical Information of China (English)

    Zhi-Yao Yu

    2005-01-01

    Many galaxies are thought to contain massive black holes, with masses in excess of ten million solar masses, at their centres and warped circumnuclear toruses. The best evidence comes from observing gas or masers rotating rapidly within a circumnuclear torus surrounding a central body. Here we report on the first MERLIN observations of line emission from the OH megamaser toward IRAS 10173+0828. The position of peak flux contours of the OH megamaser is consistent with that of the continuum in IRAS 10173+0828. This means that the OH megamaser is a diffuse unsaturated maser which could amplify the diffuse 18 cm continuum emission with an amplification factor of order unity.

  7. The First INTEGRAL AGN Catalog

    CERN Document Server

    Beckmann, V; Shrader, C R; Soldi, S

    2006-01-01

    We present the first INTEGRAL AGN catalog, based on observations performed from launch of the mission in October 2002 until January 2004. The catalog includes 42 AGN, of which 10 are Seyfert 1, 17 are Seyfert 2, and 9 are intermediate Seyfert 1.5. The fraction of blazars is rather small with 5 detected objects, and only one galaxy cluster and no star-burst galaxies have been detected so far. A complete subset consists of 32 AGN with a significance limit of 7 sigma in the INTEGRAL/ISGRI 20-40 keV data. Although the sample is not flux limited, the distribution of sources shows a ratio of obscured to unobscured AGN of 1.5 - 2.0, consistent with luminosity dependent unified models for AGN. Only four Compton-thick AGN are found in the sample. Based on the INTEGRAL data presented here, the Seyfert 2 spectra are slightly harder (Gamma = 1.95 +- 0.01) than Seyfert 1.5 (Gamma = 2.10 +- 0.02) and Seyfert 1 (Gamma = 2.11 +- 0.05).

  8. Centriolar satellites

    DEFF Research Database (Denmark)

    Tollenaere, Maxim A X; Mailand, Niels; Bekker-Jensen, Simon

    2015-01-01

    Centriolar satellites are small, microscopically visible granules that cluster around centrosomes. These structures, which contain numerous proteins directly involved in centrosome maintenance, ciliogenesis, and neurogenesis, have traditionally been viewed as vehicles for protein trafficking...... highlight newly discovered regulatory mechanisms targeting centriolar satellites and their functional status, and we discuss how defects in centriolar satellite components are intimately linked to a wide spectrum of human diseases....

  9. Satellite theory

    Science.gov (United States)

    Kozai, Y.

    1981-04-01

    The dynamical characteristics of the natural satellite of Mars, Jupiter, Saturn, Uranus and Neptune are analyzed on the basis of the solar tidal perturbation factor and the oblateness factor of the primary planet for each satellite. For the inner satellites, for which the value of the solar tidal factor is much smaller than the planetary oblateness factor, it is shown that the eccentricity and inclination of satellite orbits are generally very small and almost constant; several pairs of inner satellites are also found to exhibit commensurable mean motions, or secular accelerations in mean longitude. In the case of the outer satellites, for which solar perturbations are dominant, secular perturbations and long-period perturbations may be derived by the solution of equations of motion reduced to one degree of freedom. The existence of a few satellites, termed intermediary satellites, for which the solar tidal perturbation is on the order of the planetary oblateness factor, is also observed, and the pole of the orbital plane of the satellite is noted to execute a complex motion around the pole of the planet or the orbital plane of the planet.

  10. Spectrum from Faint Galaxy IRAS F00183-7111

    Science.gov (United States)

    2003-01-01

    NASA's Spitzer Space Telescope has detected the building blocks of life in the distant universe, albeit in a violent milieu. Training its powerful infrared eye on a faint object located at a distance of 3.2 billion light-years, Spitzer has observed the presence of water and organic molecules in the galaxy IRAS F00183-7111. With an active galactic nucleus, this is one of the most luminous galaxies in the universe, rivaling the energy output of a quasar. Because it is heavily obscured by dust (see visible-light image in the inset), most of its luminosity is radiated at infrared wavelengths.The infrared spectrograph instrument onboard Spitzer breaks light into its constituent colors, much as a prism does for visible light. The image shows a low-resolution spectrum of the galaxy obtained by the spectrograph at wavelengths between 4 and 20 microns. Spectra are graphical representations of a celestial object's unique blend of light. Characteristic patterns, or fingerprints, within the spectra allow astronomers to identify the object's chemical composition and to determine such physical properties as temperature and density.The broad depression in the center of the spectrum denotes the presence of silicates (chemically similar to beach sand) in the galaxy. An emission peak within the bottom of the trough is the chemical signature for molecular hydrogen. The hydrocarbons (orange) are organic molecules comprised of carbon and hydrogen, two of the most common elements on Earth. Since it has taken more than three billion years for the light from the galaxy to reach Earth, it is intriguing to note the presence of organics in a distant galaxy at a time when life is thought to have started forming on our home planet.Additional features in the spectrum reveal the presence of water ice (blue), carbon dioxide ice (green) and carbon monoxide (purple) in both gas and solid forms. The magenta peak corresponds to singly ionized neon gas, a spectral line often used by astronomers as a

  11. Particle contamination from Martin Optical Black. [in design of barrel baffle of Infrared Astronomical Satellite

    Science.gov (United States)

    Young, P. J.; Noll, R.; Andreozzi, L.; Hope, J.

    1981-01-01

    The design of the barrel baffle of the Infrared Astronomical Satellite (IRAS) Optical Subsystem to minimize production of particulate contamination is described. The configuration of the 50-inch long, 28.5-inch diameter baffle required pop-rivet assembly after coating with Martin Optical Black for stray light suppression. An experiment to determine the contamination produced at assembly led to the modification of the baffle construction to preclude such damage to the coated surfaces.

  12. Sensitive CO and 13CO survey of water fountain stars. Detections towards IRAS 18460-0151 and IRAS 18596+0315

    CERN Document Server

    Rizzo, J R; Miranda, L F; Osorio, M; Suarez, O; Duran-Rojas, M C

    2013-01-01

    Water fountain stars represent a stage between the asymptotic giant branch (AGB) and planetary nebulae phases, when the mass loss changes from spherical to bipolar. These types of evolved objects are characterized by high-velocity jets in the 22 GHz water maser emission. We surveyed the CO and 13CO line emission towards a sample of ten water fountain stars through observing the J=1-0 and 2-1 lines of CO and 13CO, using the 30m IRAM radio telescope at Pico Veleta. All the water fountains visible from the observatory were surveyed. Most of the line emission arises from foreground or background Galactic clouds, and we had to thoroughly analyse the spectra to unveil the velocity components related to the stars. In two sources, IRAS 18460-0151 and IRAS 18596+0315, we identified wide velocity components with a width of 35-40 km/s that are centred at the stellar velocities. These wide components can be associated with the former AGB envelope of the progenitor star. A third case, IRAS 18286-0959, is reported as tenta...

  13. IRAS 19227+1700:富碳星还是富氧星?%IRAS 19227+1700: Carbon-rich or Oxygen-rich Star?

    Institute of Scientific and Technical Information of China (English)

    陈培生; 何金华; 汪洵浩

    2003-01-01

    IRAS 19227+1700作为富碳星列于新版碳星星表中.然而该星在IRAS红外双色图上处于典型的有较厚富氧拱星包层区域中,而不处于硅酸盐碳星通常所处的区域.而且有证据表明该星不但有主线和伴线羟基脉泽发射,还有靠近中心星的水脉泽发射.其IRAS LRS谱在9-12 μm范围有尘埃发射特征,近红外的观测又证实它确实存在热的拱星包层.因此IRAS 19227+1700的拱星包层应该全是富氧性质的,它的中心星是富氧的可能性也极大.

  14. A Catalog of Geologic Data for the Hanford Site

    Energy Technology Data Exchange (ETDEWEB)

    Horton, Duane G.; Last, George V.; Gilmore, Tyler J.; Bjornstad, Bruce N.; Mackley, Rob D.

    2005-08-01

    This revision of the geologic data catalog incorporates new boreholes drilled after September 2002 as well as other older wells, particularly from the 600 Area, omitted from the earlier catalogs. Additionally, borehole geophysical log data have been added to the catalog. This version of the geologic data catalog now contains 3,519 boreholes and is current with boreholes drilled as of November 2004.

  15. 41 CFR 101-30.603 - GSA Supply Catalog.

    Science.gov (United States)

    2010-07-01

    ... 41 Public Contracts and Property Management 2 2010-07-01 2010-07-01 true GSA Supply Catalog. 101... Regulations System FEDERAL PROPERTY MANAGEMENT REGULATIONS SUPPLY AND PROCUREMENT 30-FEDERAL CATALOG SYSTEM 30.6-GSA Section of the Federal Supply Catalog § 101-30.603 GSA Supply Catalog. (a) The GSA...

  16. 41 CFR 101-30.603-2 - GSA Supply Catalog.

    Science.gov (United States)

    2010-07-01

    ... 41 Public Contracts and Property Management 2 2010-07-01 2010-07-01 true GSA Supply Catalog. 101... Regulations System FEDERAL PROPERTY MANAGEMENT REGULATIONS SUPPLY AND PROCUREMENT 30-FEDERAL CATALOG SYSTEM 30.6-GSA Section of the Federal Supply Catalog § 101-30.603-2 GSA Supply Catalog. The GSA...

  17. FERMI LARGE AREA TELESCOPE SECOND SOURCE CATALOG

    Energy Technology Data Exchange (ETDEWEB)

    Nolan, P. L.; Ajello, M.; Allafort, A.; Bechtol, K.; Berenji, B.; Blandford, R. D.; Bloom, E. D. [W. W. Hansen Experimental Physics Laboratory, Kavli Institute for Particle Astrophysics and Cosmology, Department of Physics and SLAC National Accelerator Laboratory, Stanford University, Stanford, CA 94305 (United States); Abdo, A. A. [Center for Earth Observing and Space Research, College of Science, George Mason University, Fairfax, VA 22030 (United States); Ackermann, M. [Deutsches Elektronen Synchrotron DESY, D-15738 Zeuthen (Germany); Antolini, E.; Bonamente, E. [Istituto Nazionale di Fisica Nucleare, Sezione di Perugia, I-06123 Perugia (Italy); Atwood, W. B.; Belfiore, A. [Santa Cruz Institute for Particle Physics, Department of Physics and Department of Astronomy and Astrophysics, University of California at Santa Cruz, Santa Cruz, CA 95064 (United States); Axelsson, M. [Department of Astronomy, Stockholm University, SE-106 91 Stockholm (Sweden); Baldini, L.; Bellazzini, R. [Istituto Nazionale di Fisica Nucleare, Sezione di Pisa, I-56127 Pisa (Italy); Ballet, J. [Laboratoire AIM, CEA-IRFU/CNRS/Universite Paris Diderot, Service d' Astrophysique, CEA Saclay, 91191 Gif sur Yvette (France); Barbiellini, G. [Istituto Nazionale di Fisica Nucleare, Sezione di Trieste, I-34127 Trieste (Italy); Bastieri, D. [Istituto Nazionale di Fisica Nucleare, Sezione di Padova, I-35131 Padova (Italy); Bignami, G. F., E-mail: digel@stanford.edu, E-mail: Gino.Tosti@pg.infn.it, E-mail: jean.ballet@cea.fr, E-mail: tburnett@u.washington.edu [Istituto Universitario di Studi Superiori (IUSS), I-27100 Pavia (Italy); and others

    2012-04-01

    We present the second catalog of high-energy {gamma}-ray sources detected by the Large Area Telescope (LAT), the primary science instrument on the Fermi Gamma-ray Space Telescope (Fermi), derived from data taken during the first 24 months of the science phase of the mission, which began on 2008 August 4. Source detection is based on the average flux over the 24 month period. The second Fermi-LAT catalog (2FGL) includes source location regions, defined in terms of elliptical fits to the 95% confidence regions and spectral fits in terms of power-law, exponentially cutoff power-law, or log-normal forms. Also included are flux measurements in five energy bands and light curves on monthly intervals for each source. Twelve sources in the catalog are modeled as spatially extended. We provide a detailed comparison of the results from this catalog with those from the first Fermi-LAT catalog (1FGL). Although the diffuse Galactic and isotropic models used in the 2FGL analysis are improved compared to the 1FGL catalog, we attach caution flags to 162 of the sources to indicate possible confusion with residual imperfections in the diffuse model. The 2FGL catalog contains 1873 sources detected and characterized in the 100 MeV to 100 GeV range of which we consider 127 as being firmly identified and 1171 as being reliably associated with counterparts of known or likely {gamma}-ray-producing source classes.

  18. Fermi Large Area Telescope Second Source Catalog

    Science.gov (United States)

    Nolan, P. L.; Abdo, A. A.; Ackermann, M.; Ajello, M; Allafort, A.; Antolini, E; Bonnell, J.; Cannon, A.; Celik O.; Corbet, R.; Davis, D. S.; DeCesar, M. E.; Ferrara, E. C.; Gehrels, N.; Harding, A. K.; Hays, E.; Johnson, T. E.; McConville, W.; McEnery, J. E; Perkins, J. S.; Racusin, J. L; Scargle, J. D.; Stephens, T. E.; Thompson, D. J.; Troja, E.

    2012-01-01

    We present the second catalog of high-energy gamma-ray sources detected by the Large Area Telescope (LAT), the primary science instrument on the Fermi Gamma-ray Space Telescope (Fermi), derived from data taken during the first 24 months of the science phase of the mission, which began on 2008 August 4. Source detection is based on the average flux over the 24-month period. The Second Fermi-LAT catalog (2FGL) includes source location regions, defined in terms of elliptical fits to the 95% confidence regions and spectral fits in terms of power-law, exponentially cutoff power-law, or log-normal forms. Also included are flux measurements in 5 energy bands and light curves on monthly intervals for each source. Twelve sources in the catalog are modeled as spatially extended. We provide a detailed comparison of the results from this catalog with those from the first Fermi-LAT catalog (1FGL). Although the diffuse Galactic and isotropic models used in the 2FGL analysis are improved compared to the 1FGL catalog, we attach caution flags to 162 of the sources to indicate possible confusion with residual imperfections in the diffuse model. The 2FGL catalog contains 1873 sources detected and characterized in the 100 11eV to 100 GeV range of which we consider 127 as being firmly identified and 1171 as being reliably associated with counterparts of known or likely gamma-ray-producing source classes.

  19. A catalog of Kazarian galaxies

    CERN Document Server

    Kazarian, M A; McLean, B; Allen, R J; Petrosian, A R

    2009-01-01

    The entire Kazarian galaxies (KG) catalog is presented which combines extensive new measurements of their optical parameters with a literature and database search. The measurements were made using images extracted from the STScI Digitized Sky Survey (DSS) of Jpg(blue), Fpg(red) and Ipg(NIR) band photographic sky survey plates obtained by the Palomar and UK Schmidt telescopes. We provide accurate coordinates, morphological type, spectral and activity classes, blue apparent diameters, axial ratios, position angles, red, blue and NIR apparent magnitudes, as well as counts of neighboring objects in a circle of radius 50 kpc from centers of KG. Special attention was paid to the individual descriptions of the galaxies in the original Kazarian lists, which clarified many cases of misidentifications of the objects, particularly among interacting systems. The total number of individual Kazarian objects in the database is now 706. We also include the redshifts which are now available for 404 galaxies and the 2MASS infr...

  20. Centralized automated cataloging of health science materials in the MLC/SUNY/OCLC shared cataloging service.

    Science.gov (United States)

    Raper, J E

    1977-04-01

    Since February 1976, The Medical Library Center of New York, with the assistance of the SUNY/OCLC Network, has offered, on a subscription basis, a centralized automated cataloging service to health science libraries in the greater metropolitan New York area. By using workforms and prints of OCLC record (amended by the subscribing participants), technical services personnel at the center have fed cataloging data, via a CRT terminal, into the OCLC system, which provides (1) catalog cards, received in computer filing order; (2) book card, spine, and pocket labels; (3) accessions lists; and (4) data for eventual production of book catalogs and union catalogs. The experience of the center in the development, implementation, operation, and budgeting of its shared cataloging service is discussed.

  1. Molecular gas in the star-forming region IRAS 08589-4714

    Science.gov (United States)

    Saldaño, Hugo P.; Vásquez, J.; Cappa, C. E.; Gómez, M.; Duronea, N.; Rubio, M.

    2016-10-01

    Aims: We present an analysis of the region IRAS 08589-4714 with the aim of characterizing the molecular environment. Methods: We observed the 12CO(3 -2), 13CO(3 -2), C18O(3 -2), HCO+(3 -2), and HCN(3 -2) molecular lines in a region of 150''× 150'', centered on the IRAS source, to analyze the distribution and characteristics of the molecular gas linked to the IRAS source. Results: The molecular gas distribution reveals a molecular clump that is coincident with IRAS 08589-4714 and with a dust clump detected at 1.2 mm. The molecular clump is 0.45 pc in radius and its mass and H2 volume density are 310 M⊙ and 1.2 × 104 cm-3, respectively. Two overdensities were identified within the clump in HCN(3-2) and HCO+(3-2) lines. A comparison of the LTE and virial masses suggests that the clump is collapsing in regions that harbor young stellar objects. An analysis of the molecular lines suggests that they are driving molecular outflows. Final reduced APEX data are only available at the CDS via anonymous ftp to http://cdsarc.u-strasbg.fr (http://130.79.128.5) or via http://cdsarc.u-strasbg.fr/viz-bin/qcat?J/A+A/594/A115

  2. Water emission from the high-mass star-forming region IRAS 17233-3606

    NARCIS (Netherlands)

    Leurini, S.; Gusdorf, A.; Wyrowski, F.; Codella, C.; Csengeri, T.; van der Tak, F.; Beuther, H.; Flower, D. R.; Comito, C.; Schilke, P.

    2014-01-01

    We investigate the physical and chemical processes at work during the formation of a massive protostar based on the observation of water in an outflow from a very young object previously detected in H2 and SiO in the IRAS 17233-3606 region. We estimated the abundance of water to understand its chemi

  3. Molecular gas in the star-forming region IRAS 08589-4714

    CERN Document Server

    Saldaño, Hugo P; Cappa, C E; Gómez, M; Duronea, N U; Rubio, M

    2016-01-01

    We present an analysis of the region IRAS 08589-4714 with the aim of characterizing the molecular environment. We observed the CO(3-2), ^{13}CO(3-2), C^{18}O(3-2), HCO+(3-2), and HCN(3-2) molecular lines in a region of 150" x 150", centered on the IRAS source, to analyze the distribution and characteristics of the molecular gas linked to the IRAS source. The molecular gas distribution reveals a molecular clump that is coincident with IRAS 08589-4714 and with a dust clump detected at 1.2 mm. The molecular clump is 0.45 pc in radius and its mass and H_2 volume density are 310 Mo and 1.2 x 10^4 cm^{-3}, respectively. Two overdensities were identified within the clump in HCN and HCO lines. A comparison of the LTE and virial masses suggests that the clump is collapsing in regions that harbor young stellar objects. An analysis of the molecular lines suggests that they are driving molecular outflows.

  4. Just Footprints in the Sand? Questioning Sustainability of an IRA International Project

    Science.gov (United States)

    Lewis-Spector, Jill; Richardson, Judy S.; Janusheva, Violeta

    2011-01-01

    Volunteers from the International Reading Association (IRA) participated in the teacher education component of Macedonia's Secondary Education Activity, an initiative to reform vocational/technical education (VET), funded from 2004 to 2008 by USAID. Volunteers offered professional development to VET teachers using a trainer-of-trainers model,…

  5. Wide Field CO Mapping in the Region of IRAS 19312+1950

    CERN Document Server

    Nakashima, Jun-ichi; Sobolev, Andrej M; Zhang, Yong; Hsia, Chih-Hao; Yung, Bosco H K

    2016-01-01

    We report the results of a wide field CO mapping in the region of IRAS 19312+1950. This IRAS object exhibits SiO/H$_2$O/OH maser emission, and is embedded in a chemically-rich molecular component, of which the origin is still unknown. In order to reveal the entire structure and gas mass of the surrounding molecular component for the first time, we have mapped a wide region around IRAS 19312+1950 in the $^{12}$CO $J=1-0$, $^{13}$CO $J=1-0$ and C$^{18}$O $J=1-0$ lines using the Nobeyama 45m telescope. In conjunction with the archival CO maps, we investigated a region with a size up to $20' \\times 20'$ around this IRAS object. We calculated CO gas mass assuming the LTE condition, a stellar velocity against to the interstellar medium assuming an analytic model of a bow shock, and absolute luminosity using the latest archival data and trigonometric parallax distance. The derived gas-mass (225 M$_{\\odot}$ $-$ 478 M$_{\\odot}$) of the molecular component and the relatively large luminosity ($2.63\\times10^{4}$ L$_{\\od...

  6. Adsorption of 4-nitrophenol onto Amberlite IRA-900 modified with metallophthalocyanines.

    Science.gov (United States)

    Marais, Eloïse; Nyokong, Tebello

    2008-03-21

    The adsorption of 4-nitrophenol using commercially available Amberlite IRA-900 modified with metal phthalocyanines (MPc) was investigated. The metallophthalocyanines immobilised onto the surface of Amberlite IRA-900 include Fe (FePcS4), Co (CoPcS4) and Ni (NiPcS4) tetrasulphophthalocyanines, and differently sulphonated phthalocyanine mixtures of Fe (FePcSmix), Co (CoPcSmix) and Ni (NiPcSmix). Adsorption rates were fastest for the modified adsorbents at a loading of 1x10(-3)g MPc/g Amberlite, at pH 9. The highest amount of 4-NP removal was obtained on FePcSmix modified Amberlite IRA-900 with Qt=42.9mmolg(-1) and adsorption efficiency of 86%. The recovery efficiency of 4-NP within 150min was 76%. Using the Langmuir-Hinshelwood kinetic model, the complexes showed an order of 4-nitrophenol adsorption to be as follows: CoPcSmix>NiPcS4>NiPcSmix>FePcS4>FePcSmix>CoPcS4. The MPc modified Amberlite IRA-900 was used repeatedly, following removal of 4-NP by nitric acid, without any significant loss of activity.

  7. Detection of glycolaldehyde toward the solar-type protostar NGC 1333 IRAS2A

    DEFF Research Database (Denmark)

    Coutens, Audrey; Persson, M. V.; Jørgensen, J. K.

    2015-01-01

    Glycolaldehyde is a key molecule in the formation of biologically relevant molecules such as ribose. We report its detection with the Plateau de Bure interferometer toward the Class 0 young stellar object NGC 1333 IRAS2A, which is only the second solar-type protostar for which this prebiotic mole...

  8. Properties of the high-mass star forming region IRAS 22475+5939

    Institute of Scientific and Technical Information of China (English)

    Xiao-Lan Liu; Jun-Jie Wang

    2012-01-01

    IRAS 22475+5939 has been well studied by previous astronomers,but we can still discover new characteristics about it,using the first observations of the lines from CO J=2-1,13CO J=2-1 and 13CO J=3-2 by the KOSMA 3m telescope.The mapping of the intensity ratio of 13CO J=3-2 and 13CO J=2-1 shows that the distribution of the temperature has two peaks,neither of which coincide with the IRAS 22475+5939 source or the center of the HII region,but rather are located at the edge of the HII region.Overlays of the Spitzer IRAC 8 μm with CO contours indicate that they are associated with each other and that the strongest polycyclic aromatic hydrocarbon(PAH)emission is at the IRAS 22475+5939 source position.The IRAS LRS spectrum at 7 μm 23 μm and the PHT-s spectrum at 2 μm ~ 12 μm of the IRAS 22475+5939 source also exhibit strong PAH emission characteristics in the main PAH bands.The diversity of the PAH family should be responsible for the plateaus in the PAH emission in the PHT-s and IRAS-LRS spectra.Analysis and modeling in the infrared bands suggest that IRAS 22475+5939 is more likely to be a class I young stellar object.Where this is the case,the star is likely to have a temperature of Teff~ 9995.8K,mass ~ 15.34M⊙,luminosity ~ 1.54 × 104 L⊙ and age ~ 1.54 × 104 yr.The model shows that circumstellar disc emission is important for wavelengths between 1 and 10 μm,otherwise,the envelope fluctuates for A > 10μm.Bipolar outflow is confirmed in the molecular cloud,and the excited star of the HII region could be the driving source of the outflow.High resolution is required for better results.

  9. The peculiar post-AGB supergiant IRAS 04296+3429 optical spectroscopy and its spectral energy distribution

    CERN Document Server

    Klochkova, V G; Panchuk, V E; Volk, K

    1999-01-01

    The optical spectrum of the infrared source IRAS 04296+3429 (optical counterpart-G0 Ia star, V=14.2) was obtained with the echelle spectrometer PFES at the prime focus of the 6 m telescope. We discover emission bands (0,0) and (0,1) of the Swan system of the C2 molecule in the optical spectrum of IRAS 04296+3429. Comparison with the spectrum of the Hale-Bopp comet leads us to propose that in both cases the same mechanism (resonance fluorescence) is responsible for the emission in the C2 molecular bands. Several strong absorption features whose positions coincide with known diffuse interstellar bands are revealed in the spectrum of IRAS 04296+3429. The infrared spectrum of IRAS 04296+3429 shows the famous 21 um feature, but this object has not been observed by KAO. However, like IRAS 05113+1347, IRAS 05341+0852 and IRAS 22223+4327, our detailed modelling of its spectral energy distribution suggested that this source also should show the 30 um band. In fact, ISO discovered a broad, relatively strong feature aro...

  10. Changes of MMP-1 and collagen type Ialpha1 by UVA, UVB and IRA are differentially regulated by Trx-1.

    Science.gov (United States)

    Buechner, Nicole; Schroeder, Peter; Jakob, Sascha; Kunze, Kerstin; Maresch, Tanja; Calles, Christian; Krutmann, Jean; Haendeler, Judith

    2008-07-01

    Exposure of human skin to solar radiation, which includes ultraviolet (UV) radiation (UVA and UVB) visible light and infrared radiation, induces skin aging. The effects of light have been attributed to irradiation-induced reactive oxygen species (ROS) formation, but the specific signaling pathways are not well understood. Detrimental effects of solar radiation are dermal diseases and photoaging. Exposure of cultured human dermal fibroblasts to UVA, UVB or IRA increased ROS formation in vitro. One important redox regulator is the oxidoreductase thioredoxin-1 (Trx). Trx is ubiquitously expressed and has anti-oxidative and anti-apoptotic properties. Besides its function to reduce H(2)O(2), Trx binds to and regulates transcription factors. The aim of this study was to investigate whether Trx influences the regulation of MMP-1 and collagen Ialpha1 by UVA, UVB and IRA. We irradiated human dermal fibroblasts with UVA, UVB and IRA. UVA, UVB and IRA upregulated MMP-1 expression. Trx inhibited UVA-induced MMP-1 upregulation in a NFkappaB dependent manner. UVA, UVB and IRA reduced collagen Ialpha1 expression. Incubation with Trx inhibited the effects of UVB and IRA on collagen Ialpha1 expression. In conclusion, MMP-1 and collagen Ialpha1, which play important roles in aging processes, seems to be regulated by different transcriptional mechanisms and Trx can only influence distinct signaling pathways induced by UVA, UVB and probably IRA. Thus, Trx may serve as an important contributor to an "anti-aging therapeutic cocktail".

  11. Análisis factorial confirmatorio del inventario multicultural de la expresión de la ira y hostilidad

    Directory of Open Access Journals (Sweden)

    Manolete S. Moscoso

    2016-12-01

    Full Text Available El propósito principal del presente estudio fue verificar la estructura factorial de las dos escalas que componen el Inventario Multicultural de la Expresión de la Ira y Hostilidad desde una perspectiva confirmatoria. Se utilizó el Análisis Factorial Confirmatorio en una muestra de 264 participantes provenientes de una universidad privada de Lima, Perú. El muestreo fue no probabilístico e incluyó estudiantes (25%, personal docente (17.8% y personal administrativo (57.2%. La confiabilidad del instrumento fue evaluada mediante los modelos congenérico, tau-equivalente y paralelo para cada una de las seis subescalas del instrumento, así como también calculada en base al coeficiente alfa de Cronbach con intervalos de confianza. Resultados: El análisis factorial realizado en la presente muestra peruana identificó cuatro dimensiones para la Escala de la Ira (ira manifiesta, ira contenida, control de la ira manifiesta y control de la ira contenida y dos factores para la Escala de la Hostilidad (reacción impulsiva a la ira; y temperamento, lo cual replica sustancialmente los resultados de estudios previos realizados en América Latina con muestras hispanoparlantes. El modelo congenérico nos indica un ajuste adecuado para cada una de las subescalas de la ira y hostilidad. En base a los resultados del Análisis Factorial Confirmatorio realizado en el presente estudio, la estructura factorial de ambas escalas del Inventario Multicultural de la Ira y Hostilidad es robusta y demuestra sustancial evidencia empírica de validez de construcción y consistencia interna del instrumento.

  12. [Water-filtered infrared-A (wIRA) promotes wound healing].

    Science.gov (United States)

    Winkel, R; Hoffmann, G; Hoffmann, R

    2014-11-01

    Water-filtered infrared-A (wIRA) is a special form of heat radiation with high tissue penetration and low thermal load to the skin surface which promotes the healing of acute and chronic wounds both by thermal and thermic as well as by non-thermal and non-thermic effects. Water-filtered infrared-A increases tissue temperature (+ 2.7 °C at a tissue depth of 2 cm), tissue oxygen partial pressure (+ 32 % at a tissue depth of 2 cm) and tissue perfusion. These three factors are decisive for a sufficient supply of tissue with energy and oxygen and consequently also for wound healing and infection defense. Water-filtered infrared-A promotes normal as well as disturbed wound healing by diminishing inflammation and exudation, by promotion of infection defense and regeneration, and by alleviation of pain. These effects have been proven in a total of seven prospective studies (of these six randomized controlled studies) with most of the effects having an evidence level of Ia or Ib. The additional cases of complicated courses of wound healing presented in this article illustrate the proven effects of wIRA. Not only in the 6 presented cases wIRA turned the complicated courses of wound healing for the better and facilitated the healing of the wounds after varying total times of irradiation (in the 6 cases 51-550 h) and after variable times of wound care and mostly after transplantation of split skin grafts. In complicated courses of wound healing wIRA does not replace consultation and, when indicated, treatment by an experienced plastic surgeon and by a surgeon specialized in septic surgery. With these limitations wIRA can be recommended as a valuable complement for the treatment of acute as well as of chronic wounds.

  13. Detection of glycolaldehyde toward the solar-type protostar NGC 1333 IRAS2A

    Science.gov (United States)

    Coutens, A.; Persson, M. V.; Jørgensen, J. K.; Wampfler, S. F.; Lykke, J. M.

    2015-04-01

    Glycolaldehyde is a key molecule in the formation of biologically relevant molecules such as ribose. We report its detection with the Plateau de Bure interferometer toward the Class 0 young stellar object NGC 1333 IRAS2A, which is only the second solar-type protostar for which this prebiotic molecule is detected. Local thermodynamic equilibrium analyses of glycolaldehyde, ethylene glycol (the reduced alcohol of glycolaldehyde), and methyl formate (the most abundant isomer of glycolaldehyde) were carried out. The relative abundance of ethylene glycol to glycolaldehyde is found to be ~5 - higher than in the Class 0 source IRAS 16293-2422 (~1), but similar to the lower limits derived in comets (≥3-6). The different ethylene glycol-to-glycolaldehyde ratios in the two protostars might be related to different CH3OH:CO compositions of the icy grain mantles. In particular, a more efficient hydrogenation on the grains in NGC 1333 IRAS2A would favor the formation of both methanol and ethylene glycol. In conclusion, it is possible that like NGC 1333 IRAS2A, other low-mass protostars show high ethylene glycol-to-glycolaldehyde abundance ratios. The cometary ratios might consequently be inherited from earlier stages of star formation if the young Sun experienced conditions similar to NGC 1333 IRAS2A. Based on observations carried out with the IRAM Plateau de Bure Interferometer. IRAM is supported by INSU/CNRS (France), MPG (Germany) and IGN (Spain).Figures 3-4 and Table 1 are available in electronic form at http://www.aanda.org

  14. Satellite Communications

    CERN Document Server

    Pelton, Joseph N

    2012-01-01

    The field of satellite communications represents the world's largest space industry. Those who are interested in space need to understand the fundamentals of satellite communications, its technology, operation, business, economic, and regulatory aspects. This book explains all this along with key insights into the field's future growth trends and current strategic challenges. Fundamentals of Satellite Communications is a concise book that gives all of the key facts and figures as well as a strategic view of where this dynamic industry is going. Author Joseph N. Pelton, PhD, former Dean of the International Space University and former Director of Strategic Policy at Intelstat, presents a r

  15. Estudio descriptivo correlacional entre ira y personalidad, a la luz de la teoría de Hans Eysenck

    OpenAIRE

    Clemencia Montaña de Barragán; María Alexandra Acosta; Ruby Maritza Gerena

    2002-01-01

    Este trabajo presenta una cuidadosa revisión teórica sobre el tema de la ira, su evaluación e intervención, relacionada muy directamente con la agresividad y teorías importantes de la personalidad, enfocándose principalmente a la teoría de H. Eysenck. Se aplicaron dos instrumentos, uno para medir ira (escala MAG de Ira) y otro para medir dimensiones de personalidad Extroversión Neuroticismo Psicoticismo (EPQ-J), a 200 niños de ambos sexos, con edades comprendidas ...

  16. Archival Descriptions from the National Archives Catalog

    Data.gov (United States)

    National Archives and Records Administration — Archival Descriptions from the National Archives Catalog data set provides archival descriptions of the permanent holdings of the federal government in the custody...

  17. Advanced National Seismic System (ANSS) Comprehensive Catalog

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — The ANSS Comprehensive Catalog (ComCat) contains earthquake source parameters and other products produced by contributing seismic networks. Important digital...

  18. Mexican Earthquakes and Tsunamis Catalog Reviewed

    Science.gov (United States)

    Ramirez-Herrera, M. T.; Castillo-Aja, R.

    2015-12-01

    Today the availability of information on the internet makes online catalogs very easy to access by both scholars and the public in general. The catalog in the "Significant Earthquake Database", managed by the National Center for Environmental Information (NCEI formerly NCDC), NOAA, allows access by deploying tabular and cartographic data related to earthquakes and tsunamis contained in the database. The NCEI catalog is the product of compiling previously existing catalogs, historical sources, newspapers, and scientific articles. Because NCEI catalog has a global coverage the information is not homogeneous. Existence of historical information depends on the presence of people in places where the disaster occurred, and that the permanence of the description is preserved in documents and oral tradition. In the case of instrumental data, their availability depends on the distribution and quality of seismic stations. Therefore, the availability of information for the first half of 20th century can be improved by careful analysis of the available information and by searching and resolving inconsistencies. This study shows the advances we made in upgrading and refining data for the earthquake and tsunami catalog of Mexico since 1500 CE until today, presented in the format of table and map. Data analysis allowed us to identify the following sources of error in the location of the epicenters in existing catalogs: • Incorrect coordinate entry • Place name erroneous or mistaken • Too general data that makes difficult to locate the epicenter, mainly for older earthquakes • Inconsistency of earthquakes and the tsunami occurrence: earthquake's epicenter located too far inland reported as tsunamigenic. The process of completing the catalogs directly depends on the availability of information; as new archives are opened for inspection, there are more opportunities to complete the history of large earthquakes and tsunamis in Mexico. Here, we also present new earthquake and

  19. KVK - a Meta Catalog of Libraries

    Directory of Open Access Journals (Sweden)

    Michael W. Mönnich

    2001-07-01

    Full Text Available Over the past years, the majority of libraries worldwide implemented interfaces to allow users to access to their bibliographic databases through the WWW. Usually these interfaces consist of HTML-pages with an embedded FORMS template where the search terms are entered. Thus for the first time it was made possible for the user to access almost every library using only one software: the WWW browser. However, if the user has to search more than one library catalog, e.g. when searching literature for a PhD thesis, he has to access a multitude of catalogs deal with different search forms, different search syntaxes, wildcards etc. This is the case especially for users in Germany. Faced with this situation in 1996, our team at the university library of Karlsruhe came up with the idea to create a virtual catalog enabling our library patrons to search several catalogs simultaneously. The idea was inspired by the successful introduction of meta search engines like metacrawler which perform the same function with internet search engines. So why not try to do it with library catalogs? The idea was discussed, and with support from the faculty of computer science, a prototype was built in July 1996. It proved surprisingly easy to do, so we included not only union catalogs but also bookshops. The meta catalog showed so much potential that we decided not to limit access to our local library patrons but to offer it as a service to the internet community as Karlsruher Virtueller Katalog (KVK, Karlsruhe Virtual Catalog. Once the KVK was announced in several mailing list, the usage peaked within a few weeks and has continued to do so.

  20. Photodynamic therapy (PDT and waterfiltered infrared A (wIRA in patients with recalcitrant common hand and foot warts

    Directory of Open Access Journals (Sweden)

    Hoffmann, Gerd

    2004-10-01

    Full Text Available Background: Common warts (verrucae vulgares are human papilloma virus (HPV infections with a high incidence and prevalence, most often affecting hands and feet, being able to impair quality of life. About 30 different therapeutic regimens described in literature reveal a lack of a single striking strategy. Recent publications showed positive results of photodynamic therapy (PDT with 5-aminolevulinic acid (5-ALA in the treatment of HPV-induced skin diseases, especially warts, using visible light (VIS to stimulate an absorption band of endogenously formed protoporphyrin IX. Additional experiences adding waterfiltered infrared A (wIRA during 5-ALA-PDT revealed positive effects. Aim of the study: First prospective randomised controlled blind study including PDT and wIRA in the treatment of recalcitrant common hand and foot warts. Comparison of "5-ALA cream (ALA vs. placebo cream (PLC" and "irradiation with visible light and wIRA (VIS+wIRA vs. irradiation with visible light alone (VIS". Methods: Pre-treatment with keratolysis (salicylic acid and curettage. PDT treatment: topical application of 5-ALA (Medac in "unguentum emulsificans aquosum" vs. placebo; irradiation: combination of VIS and a large amount of wIRA (Hydrosun® radiator type 501, 4 mm water cuvette, waterfiltered spectrum 590-1400 nm, contact-free, typically painless vs. VIS alone. Post-treatment with retinoic acid ointment. One to three therapy cycles every 3 weeks. Main variable of interest: "Percent change of total wart area of each patient over the time" (18 weeks. Global judgement by patient and by physician and subjective rating of feeling/pain (visual analogue scales. 80 patients with therapy-resistant common hand and foot warts were assigned randomly into one of the four therapy groups with comparable numbers of warts at comparable sites in all groups. Results: The individual total wart area decreased during 18 weeks in group 1 (ALA+VIS+wIRA and in group 2 (PLC+VIS+wIRA

  1. Satellite orbital conjunction reports assessing threatening encounters in space (SOCRATES)

    Science.gov (United States)

    Kelso, T. S.; Alfano, S.

    2006-05-01

    While many satellite operators are aware of the possibility of a collision between their satellite and another object in earth orbit, most seem unaware of the frequency of near misses occurring each day. Until recently, no service existed to advise satellite operators of an impending conjunction of a satellite payload with another satellite, putting the responsibility for determining these occurrences squarely on the satellite operator's shoulders. This problem has been further confounded by the lack of a timely, comprehensive data set of satellite orbital element sets and computationally efficient tools to provide predictions using industry-standard software. As a result, hundreds of conjunctions within 1 km occur each week, with little or no intervention, putting billions of dollars of space hardware at risk, along with their associated missions. As a service to the satellite operator community, the Center for Space Standards & Innovation (CSSI) offers SOCRATES-Satellite Orbital Conjunction Reports Assessing Threatening Encounters in Space. Twice each day, CSSI runs a list of all satellite payloads on orbit against a list of all objects on orbit using the catalog of all unclassified NORAD two-line element sets to look for conjunctions over the next seven days. The runs are made using STK/CAT-Satellite Tool Kit's Conjunction Analysis Tools-together with the NORAD SGP4 propagator in STK. This paper will discuss how SOCRATES works and how it can help satellite operators avoid undesired close approaches through advanced mission planning.

  2. Satellite Geomagnetism

    DEFF Research Database (Denmark)

    Olsen, Nils; Stolle, Claudia

    2012-01-01

    Observations of Earth’s magnetic field from space began more than 50 years ago. A continuous monitoring of the field using low Earth orbit (LEO) satellites, however, started only in 1999, and three satellites have taken highprecision measurements of the geomagnetic field during the past decade...... ability to characterize and understand the many sources that contribute to Earth’s magnetic field. In this review, we summarize investigations of Earth’s interior and environment that have been possible through the analysis of high-precision magnetic field observations taken by LEO satellites........ The unprecedented time-space coverage of their data opened revolutionary new possibilities for monitoring, understanding, and exploring Earth’s magnetic field. In the near future, the three-satellite constellation Swarm will ensure continuity of such measurement and provide enhanced possibilities to improve our...

  3. Fermi Large Area Telescope Second Source Catalog

    CERN Document Server

    ,

    2011-01-01

    We present the second catalog of high-energy gamma-ray sources detected by the Large Area Telescope (LAT), the primary science instrument on the Fermi Gamma-ray Space Telescope (Fermi), derived from data taken during the first 24 months of the science phase of the mission, which began on 2008 August 4. Source detection is based on the average flux over the 24-month period. The Second Fermi-LAT catalog (2FGL) includes source location regions, defined in terms of elliptical fits to the 95% confidence regions and spectral fits in terms of power-law, exponentially cutoff power-law, or log-normal forms. Also included are flux measurements in 5 energy bands and light curves on monthly intervals for each source. Twelve sources in the catalog are modeled as spatially extended. We provide a detailed comparison of the results from this catalog with those from the first Fermi-LAT catalog (1FGL). Although the diffuse Galactic and isotropic models used in the 2FGL analysis are improved compared to the 1FGL catalog, we att...

  4. Georgia tech catalog of gravitational waveforms

    Science.gov (United States)

    Jani, Karan; Healy, James; Clark, James A.; London, Lionel; Laguna, Pablo; Shoemaker, Deirdre

    2016-10-01

    This paper introduces a catalog of gravitational waveforms from the bank of simulations by the numerical relativity effort at Georgia Tech. Currently, the catalog consists of 452 distinct waveforms from more than 600 binary black hole simulations: 128 of the waveforms are from binaries with black hole spins aligned with the orbital angular momentum, and 324 are from precessing binary black hole systems. The waveforms from binaries with non-spinning black holes have mass-ratios q = m 1/m 2 ≤ 15, and those with precessing, spinning black holes have q ≤ 8. The waveforms expand a moderate number of orbits in the late inspiral, the burst during coalescence, and the ring-down of the final black hole. Examples of waveforms in the catalog matched against the widely used approximate models are presented. In addition, predictions of the mass and spin of the final black hole by phenomenological fits are tested against the results from the simulation bank. The role of the catalog in interpreting the GW150914 event and future massive binary black-hole search in LIGO is discussed. The Georgia Tech catalog is publicly available at einstein.gatech.edu/catalog.

  5. Satellite (Natural)

    Science.gov (United States)

    Murdin, P.

    2000-11-01

    In its most general sense, any celestial object in orbit around a similar larger object. Thus, for example, the Magellanic Clouds are satellite galaxies of our own Milky Way galaxy. Without qualification, the term is used to mean a body in orbit around a planet; an alternative term is moon. The term natural satellite distinguishes these bodies from artificial satellites—spacecraft placed in orbi...

  6. Open Access Metadata, Catalogers, and Vendors: The Future of Cataloging Records

    Science.gov (United States)

    Flynn, Emily Alinder

    2013-01-01

    The open access (OA) movement is working to transform scholarly communication around the world, but this philosophy can also apply to metadata and cataloging records. While some notable, large academic libraries, such as Harvard University, the University of Michigan, and the University of Cambridge, released their cataloging records under OA…

  7. Open Access Metadata, Catalogers, and Vendors: The Future of Cataloging Records

    Science.gov (United States)

    Flynn, Emily Alinder

    2013-01-01

    The open access (OA) movement is working to transform scholarly communication around the world, but this philosophy can also apply to metadata and cataloging records. While some notable, large academic libraries, such as Harvard University, the University of Michigan, and the University of Cambridge, released their cataloging records under OA…

  8. Preparing for the Use of Classification in Online Cataloging Systems and in Online Catalogs.

    Science.gov (United States)

    Cochrane, Pauline A.; Markey, Karen

    1985-01-01

    Presents overview of library classification and automation (1940-84), including use of Dewey Decimal and Library of Congress classification in online cataloging systems. Highlights include classification number access in existing online catalogs, functions of classification records, specifications for authority file records, and the nature of…

  9. Análisis de la ira en pacientes con cardiopatía isquémica de la ciudad de Medellín (Colombia

    Directory of Open Access Journals (Sweden)

    Andrea Ochoa Ochoa

    2010-01-01

    Full Text Available Este estudio tuvo como objetivo comparar los niveles de ira, y sus componentes, entre un grupo de personas con Cardiopatía Isquémica y un grupo control sin esta enfermedad. Participaron 90 pacientes con cardiopatía isquémica de la Clínica Cardiovascular en Medellín y 78 controles sin la enfermedad. A cada uno de los participantes de les administró la prueba del STAXI- 2. Los resultados muestran que, comparado con los controles, los pacientes con cardiopatía isquémica tuvieron niveles significativamente más altos de ira como rasgo (p < 0.01, específicamente en la subescala reacción de ira (p < 0.05, y expresión interna de ira (p < 0.05. Los pacientes con cardiopatía isquémica experimentan más frecuentemente sentimientos de ira (ira rasgo, aparentemente debido a que son más sensibles a las críticas de los demás (reacción de ira, pero tienden a suprimir la expresión de esta emoción (expresión de ira interna. Estos datos confirman la necesidad de implementar programas dirigidos al manejo adecuado de la ira en estos pacientes y entender mejor las implicaciones que pueda tener la ira en la progresión de su enfermedad.

  10. The Nature of the IRAS Ring G159.6-18.5 in Perseus and its Exciting Star HD 278942

    Science.gov (United States)

    Wannier, P.; Andersson, B.; Moriarty-Schieven, G.; Bakker, E.

    1999-01-01

    We discuss an extended feature in the Perseus molecular cloud complex, most prominent in the IRAS database as an almost complete ring of radius 0.75 degrees, but also clearly seen in optical surveys and in radio continuum emission.

  11. Meteor showers an annotated catalog

    CERN Document Server

    Kronk, Gary W

    2014-01-01

    Meteor showers are among the most spectacular celestial events that may be observed by the naked eye, and have been the object of fascination throughout human history. In “Meteor Showers: An Annotated Catalog,” the interested observer can access detailed research on over 100 annual and periodic meteor streams in order to capitalize on these majestic spectacles. Each meteor shower entry includes details of their discovery, important observations and orbits, and gives a full picture of duration, location in the sky, and expected hourly rates. Armed with a fuller understanding, the amateur observer can better view and appreciate the shower of their choice. The original book, published in 1988, has been updated with over 25 years of research in this new and improved edition. Almost every meteor shower study is expanded, with some original minor showers being dropped while new ones are added. The book also includes breakthroughs in the study of meteor showers, such as accurate predictions of outbursts as well ...

  12. A catalog of Kazarian galaxies

    Science.gov (United States)

    Kazarian, M. A.; Adibekyan, V. Zh.; McLean, B.; Allen, R. J.; Petrosian, A. R.

    2010-01-01

    The entire Kazarian galaxies (KG) catalog is presented, which combines extensive new measurements of their optical parameters with a literature and database search. The measurements were made using images extracted from the STScI Digitized Sky Survey (DSS) of Jpg(blue), Fpg(red), and Ipg(NIR) band photographic sky survey plates obtained by the Palomar and UK Schmidt telescopes. We provide accurate coordinates, morphological types, spectral and activity classes, blue apparent diameters, axial ratios, position angles, red, blue, and NIR apparent magnitudes, as well as counts of neighboring objects in a circle of radius 50 kpc from centers of KG. Special attention was paid to the individual descriptions of the galaxies in the original Kazarian lists, which clarified many cases of misidentifications of the objects, particularly among interacting systems. The total number of individual Kazarian objects in the database is now 706. We also include the redshifts, which are now available for 404 galaxies and the 2MASS infrared magnitudes for 598 KG. The database also includes extensive notes, which summarize information about the membership of Kazarian galaxies in different systems of galaxies and about revised activity classes and redshifts. An atlas of several interesting subclasses of Kazarian galaxies is also presented.

  13. IRAS 10173+0828的翘曲拱核环中的 OH超脉泽%OH Megamasers in Warped Circumnuclear Torus of IRAS 10173+0828

    Institute of Scientific and Technical Information of China (English)

    俞志尧

    2004-01-01

    IRAS 10173+0828的拱核环中的OH超脉泽进行MERLIN§高分辨观测,得到了拱核环为翘曲的证据,同时得到了10个速度通道中OH超脉泽的等强度轮廓线向东西方向延伸的角尺寸与其相应速度通道中峰束流量密度成正相关关系.

  14. Water-filtered infrared-A (wIRA) can act as a penetration enhancer for topically applied substances

    OpenAIRE

    Sterry, Wolfram; Ackermann, Hanns; Hoffmann, Gerd; Schanzer, Sabine; Meyer, Lars; Grone, Diego; Otberg, Nina; Lademann, Jürgen

    2008-01-01

    Background: Water-filtered infrared-A (wIRA) irradiation has been shown to enhance penetration of clinically used topically applied substances in humans through investigation of functional effects of penetrated substances like vasoconstriction by cortisone. Aim of the study: Investigation of the influence of wIRA irradiation on the dermatopharmacokinetics of topically applied substances by use of optical methods, especially to localize penetrating substances, in a prospective randomised contr...

  15. Wassergefiltertes Infrarot A (wIRA) kann als Penetrationsverstärker für topisch aufgetragene Substanzen wirken

    OpenAIRE

    Otberg, N; Grone, D; Meyer, L.; Schanzer, S; Hoffmann, G.; Ackermann, H; Sterry, W.; Lademann, J.

    2008-01-01

    Background: Water-filtered infrared-A (wIRA) irradiation has been shown to enhance penetration of clinically used topically applied substances in humans through investigation of functional effects of penetrated substances like vasoconstriction by cortisone. Aim of the study: Investigation of the influence of wIRA irradiation on the dermatopharmacokinetics of topically applied substances by use of optical methods, especially to localize penetrating substances, in a prospective randomised c...

  16. An Open Catalog for Supernova Data

    Science.gov (United States)

    Guillochon, James; Parrent, Jerod; Kelley, Luke Zoltan; Margutti, Raffaella

    2017-01-01

    We present the Open Supernova Catalog, an online collection of observations and metadata for presently 36,000+ supernovae and related candidates. The catalog is freely available on the web (https://sne.space), with its main interface having been designed to be a user-friendly, rapidly searchable table accessible on desktop and mobile devices. In addition to the primary catalog table containing supernova metadata, an individual page is generated for each supernova, which displays its available metadata, light curves, and spectra spanning X-ray to radio frequencies. The data presented in the catalog is automatically rebuilt on a daily basis and is constructed by parsing several dozen sources, including the data presented in the supernova literature and from secondary sources such as other web-based catalogs. Individual supernova data is stored in the hierarchical, human- and machine-readable JSON format, with the entirety of each supernova’s data being contained within a single JSON file bearing its name. The setup we present here, which is based on open-source software maintained via git repositories hosted on github, enables anyone to download the entirety of the supernova data set to their home computer in minutes, and to make contributions of their own data back to the catalog via git. As the supernova data set continues to grow, especially in the upcoming era of all-sky synoptic telescopes, which will increase the total number of events by orders of magnitude, we hope that the catalog we have designed will be a valuable tool for the community to analyze both historical and contemporary supernovae.

  17. Fermi Large Area Telescope Second Source Catalog

    Science.gov (United States)

    Nolan, P. L.; Abdo, A. A.; Ackermann, M.; Ajello, M.; Allafort, A.; Antolini, E.; Atwood, W. B.; Axelsson, M.; Baldini, L.; Ballet, J.; Barbiellini, G.; Bastieri, D.; Bechtol, K.; Belfiore, A.; Bellazzini, R.; Berenji, B.; Bignami, G. F.; Blandford, R. D.; Bloom, E. D.; Bonamente, E.; Bonnell, J.; Borgland, A. W.; Bottacini, E.; Bouvier, A.; Brandt, T. J.; Bregeon, J.; Brigida, M.; Bruel, P.; Buehler, R.; Burnett, T. H.; Buson, S.; Caliandro, G. A.; Cameron, R. A.; Campana, R.; Cañadas, B.; Cannon, A.; Caraveo, P. A.; Casandjian, J. M.; Cavazzuti, E.; Ceccanti, M.; Cecchi, C.; Çelik, Ö.; Charles, E.; Chekhtman, A.; Cheung, C. C.; Chiang, J.; Chipaux, R.; Ciprini, S.; Claus, R.; Cohen-Tanugi, J.; Cominsky, L. R.; Conrad, J.; Corbet, R.; Cutini, S.; D'Ammando, F.; Davis, D. S.; de Angelis, A.; DeCesar, M. E.; DeKlotz, M.; De Luca, A.; den Hartog, P. R.; de Palma, F.; Dermer, C. D.; Digel, S. W.; Silva, E. do Couto e.; Drell, P. S.; Drlica-Wagner, A.; Dubois, R.; Dumora, D.; Enoto, T.; Escande, L.; Fabiani, D.; Falletti, L.; Favuzzi, C.; Fegan, S. J.; Ferrara, E. C.; Focke, W. B.; Fortin, P.; Frailis, M.; Fukazawa, Y.; Funk, S.; Fusco, P.; Gargano, F.; Gasparrini, D.; Gehrels, N.; Germani, S.; Giebels, B.; Giglietto, N.; Giommi, P.; Giordano, F.; Giroletti, M.; Glanzman, T.; Godfrey, G.; Grenier, I. A.; Grondin, M.-H.; Grove, J. E.; Guillemot, L.; Guiriec, S.; Gustafsson, M.; Hadasch, D.; Hanabata, Y.; Harding, A. K.; Hayashida, M.; Hays, E.; Hill, A. B.; Horan, D.; Hou, X.; Hughes, R. E.; Iafrate, G.; Itoh, R.; Jóhannesson, G.; Johnson, R. P.; Johnson, T. E.; Johnson, A. S.; Johnson, T. J.; Kamae, T.; Katagiri, H.; Kataoka, J.; Katsuta, J.; Kawai, N.; Kerr, M.; Knödlseder, J.; Kocevski, D.; Kuss, M.; Lande, J.; Landriu, D.; Latronico, L.; Lemoine-Goumard, M.; Lionetto, A. M.; Llena Garde, M.; Longo, F.; Loparco, F.; Lott, B.; Lovellette, M. N.; Lubrano, P.; Madejski, G. M.; Marelli, M.; Massaro, E.; Mazziotta, M. N.; McConville, W.; McEnery, J. E.; Mehault, J.; Michelson, P. F.; Minuti, M.; Mitthumsiri, W.; Mizuno, T.; Moiseev, A. A.; Mongelli, M.; Monte, C.; Monzani, M. E.; Morselli, A.; Moskalenko, I. V.; Murgia, S.; Nakamori, T.; Naumann-Godo, M.; Norris, J. P.; Nuss, E.; Nymark, T.; Ohno, M.; Ohsugi, T.; Okumura, A.; Omodei, N.; Orlando, E.; Ormes, J. F.; Ozaki, M.; Paneque, D.; Panetta, J. H.; Parent, D.; Perkins, J. S.; Pesce-Rollins, M.; Pierbattista, M.; Pinchera, M.; Piron, F.; Pivato, G.; Porter, T. A.; Racusin, J. L.; Rainò, S.; Rando, R.; Razzano, M.; Razzaque, S.; Reimer, A.; Reimer, O.; Reposeur, T.; Ritz, S.; Rochester, L. S.; Romani, R. W.; Roth, M.; Rousseau, R.; Ryde, F.; Sadrozinski, H. F.-W.; Salvetti, D.; Sanchez, D. A.; Saz Parkinson, P. M.; Sbarra, C.; Scargle, J. D.; Schalk, T. L.; Sgrò, C.; Shaw, M. S.; Shrader, C.; Siskind, E. J.; Smith, D. A.; Spandre, G.; Spinelli, P.; Stephens, T. E.; Strickman, M. S.; Suson, D. J.; Tajima, H.; Takahashi, H.; Takahashi, T.; Tanaka, T.; Thayer, J. G.; Thayer, J. B.; Thompson, D. J.; Tibaldo, L.; Tibolla, O.; Tinebra, F.; Tinivella, M.; Torres, D. F.; Tosti, G.; Troja, E.; Uchiyama, Y.; Vandenbroucke, J.; Van Etten, A.; Van Klaveren, B.; Vasileiou, V.; Vianello, G.; Vitale, V.; Waite, A. P.; Wallace, E.; Wang, P.; Werner, M.; Winer, B. L.; Wood, D. L.; Wood, K. S.; Wood, M.; Yang, Z.; Zimmer, S.

    2012-04-01

    We present the second catalog of high-energy γ-ray sources detected by the Large Area Telescope (LAT), the primary science instrument on the Fermi Gamma-ray Space Telescope (Fermi), derived from data taken during the first 24 months of the science phase of the mission, which began on 2008 August 4. Source detection is based on the average flux over the 24 month period. The second Fermi-LAT catalog (2FGL) includes source location regions, defined in terms of elliptical fits to the 95% confidence regions and spectral fits in terms of power-law, exponentially cutoff power-law, or log-normal forms. Also included are flux measurements in five energy bands and light curves on monthly intervals for each source. Twelve sources in the catalog are modeled as spatially extended. We provide a detailed comparison of the results from this catalog with those from the first Fermi-LAT catalog (1FGL). Although the diffuse Galactic and isotropic models used in the 2FGL analysis are improved compared to the 1FGL catalog, we attach caution flags to 162 of the sources to indicate possible confusion with residual imperfections in the diffuse model. The 2FGL catalog contains 1873 sources detected and characterized in the 100 MeV to 100 GeV range of which we consider 127 as being firmly identified and 1171 as being reliably associated with counterparts of known or likely γ-ray-producing source classes. We dedicate this paper to the memory of our colleague Patrick Nolan, who died on 2011 November 6. His career spanned much of the history of high-energy astronomy from space and his work on the Large Area Telescope (LAT) began nearly 20 years ago when it was just a concept. Pat was a central member in the operation of the LAT collaboration and he is greatly missed.

  18. Trigonometric Distance and Proper Motion of IRAS 20056+3350: Massive Star Forming Region on the Solar Circle

    CERN Document Server

    Burns, Ross A; Handa, Toshihiro; Omodaka, Toshihiro; Nakagawa, Akiharu; Nakanishi, Hiroyuki; Hayashi, Masahiko; Shizugami, Makoto

    2014-01-01

    We report our measurement of the trigonometric distance and proper motion IRAS 20056+3350, obtained from the annual parallax of H2O masers. Our distance of D = 4.69 +0.65-0.51 kpc, which is more than two times larger than the near kinematic distance adopted in the literature, places IRAS 20056+3350 at the leading tip of the Local arm, and proximal to the Solar circle. Using our distance we re-evaluate past observations to reveal IRAS 20056+3350 as a site of massive star formation at a young stage of evolution. This result is consistent with the spectral energy distribution of the source evaluated with published photometric data from UKIDSS, WISE, AKARI, IRAS and sub-millimetre continuum. Both analytical approaches reveal the luminosity of the region to be 2.4 x 10^4 Lo, and suggest that IRAS 20056+3350 is forming an embedded star of 16 Mo. We estimated the proper motion of IRAS 20056+3350 to be ($\\mu_{\\alpha}\\cos\\delta$, $\\mu_{\\delta}$) = ($-2.62\\pm0.33$, $-5.65\\pm0.52$) mas yr$^{-1}$ from the group motion of...

  19. Estudio descriptivo correlacional entre ira y personalidad, a la luz de la teoría de Hans Eysenck

    Directory of Open Access Journals (Sweden)

    Clemencia Montaña de Barragán

    2002-01-01

    Full Text Available Este trabajo presenta una cuidadosa revisión teórica sobre el tema de la ira, su evaluación e intervención, relacionada muy directamente con la agresividad y teorías importantes de la personalidad, enfocándose principalmente a la teoría de H. Eysenck. Se aplicaron dos instrumentos, uno para medir ira (escala MAG de Ira y otro para medir dimensiones de personalidad Extroversión – Neuroticismo – Psicoticismo (EPQ-J, a 200 niños de ambos sexos, con edades comprendidas entre 9 y 11 años, en tres colegios de Santafé de Bogotá. Se realizó una aplicación piloto y validación por jueces para la Escala MAG de ira con el objetivo de verificar su efectividad, mostrando unos buenos resultados mediante una consistencia interna de 0.8236. Al relacionar esta dos pruebas se encontró que hay niveles muy significativos de correlación entre personalidad e ira, a la vez que hay buenas intercorrelaciones entre las dimensiones del EPQ-J. Se encontraron correlaciones significativas entre ira y conducta antisocial. El aporte del trabajo es la presentación de la escala MAG para aplicarla en población infantil

  20. ESTUDIO DESCRIPTIVO CORRELACIONAL ENTRE IRA Y PERSONALIDAD A LA LUZ DE LA TEORÍA DE HANS EYSENCK

    Directory of Open Access Journals (Sweden)

    Clemencia Montaña de Barragán

    2002-07-01

    Full Text Available Este trabajo presenta una cuidadosa revisión teórica sobre el tema de la ira, su evaluación e intervención, relacionada muy directamente con la agresividad y teorías importantes de la personalidad, enfocándose principalmente a la teoría de H. Eysenck. Se aplicaron dos instrumentos, uno para medir ira (escala MAG de Ira y otro para medir dimensiones de personalidad Extroversión – Neuroticismo – Psicoticismo (EPQ-J, a 200 niños de ambos sexos, con edades comprendidas entre 9 y 11 años, en tres colegios de Santafé de Bogotá. Se realizó una aplicación piloto y validación por jueces para la Escala MAG de ira con el objetivo de verificar su efectividad, mostrando unos buenos resultados mediante una consistencia interna de 0.8236. Al relacionar esta dos pruebas se encontró que hay niveles muy significativos de correlación entre personalidad e ira, a la vez que hay buenas intercorrelaciones entre las dimensiones del EPQ-J. Se encontraron correlaciones significativas entre ira y conducta antisocial. El aporte del trabajo es la presentación de la escala MAG para aplicarla en población infantil.

  1. La Región de formación estelar masiva IRAS 085894714

    Science.gov (United States)

    Saldaño, H.; Vázques, J.; Cappa, C. E.; Gómez, M.; Rubio, M.

    2016-08-01

    In this contribution we present an analysis of the IRAS 085894714 region with the aim of characterizing the molecular environment and deriving physical properties of young massive cores likely associated with this source. We use the APEX telescope to detect the CO, CO, and CO lines in 32 transition. We observe two molecular cores close to the IRAS source position. We estimate the LTE mass in 410 M for the principal core, which has a H mean density cm and a column density cm, characteristic of a massive core in a star formation process. We identify counterparts on the WISE and Herschel images for both cores and find two molecular outflows associated with each young embedded source.

  2. Active star formation at intermediate Galactic latitude: the case of IRAS 06345-3023

    CERN Document Server

    Yun, J L

    2015-01-01

    We report the discovery of a small aggregate of young stars seen in high-resolution, deep near-infrared ($JHK_S$) images towards IRAS 06345-3023 in the outer Galaxy and well below the mid-plane of the Galactic disc. The group of young stars is likely to be composed of low-mass stars, mostly Class I young stellar objects. The stars are seen towards a molecular cloud whose CO map peaks at the location of the IRAS source. The near-infrared images reveal, additionally, the presence of nebular emission with rich morphological features, including arcs in the vicinity of embedded stars, wisps and bright rims of a butterfly-shaped dark cloud. The location of this molecular cloud as a new star formation site well below the Galactic plane in the outer Galaxy indicates that active star formation is taking place at vertical distances larger than those typical of the (thin) disc.

  3. The Interstellar Medium of IRAS 08572+3915 NW: H3+ and Warm High Velocity CO

    CERN Document Server

    Geballe, T R; McCall, B J; Oka, T; Usuda, T

    2006-01-01

    We confirm the first detection of the molecular ion H3+ in an extragalactic object, the highly obscured ultraluminous galaxy IRAS 08572+3915 NW. We also have detected absorption lines of the fundamental band of CO in this galaxy. The CO absorption consists of a cold component close to the systemic velocity and warm, highly blueshifted and redshifted components. The warm blueshifted component is remarkably strong and broad and extends at least to -350 km/s. Some analogies can be drawn between the H3+ and cold CO in IRAS08572+3915 NW and the same species seen toward the Galactic center. The profiles of the warm CO components are not those expected from a dusty torus of the type thought to obscure active galactic nuclei. They are probably formed close to the dust continuum surface near the buried and active nucleus and are probably associated with an unusual and energetic event there.

  4. 1SXPS: A deep Swift X-ray Telescope point source catalog with light curves and spectra

    CERN Document Server

    Evans, P A; Beardmore, A P; Page, K L; Willingale, R; Mountford, C J; Pagani, C; Burrows, D N; Kennea, J A; Perri, M; Tagliaferri, G; Gehrels, N

    2013-01-01

    We present the 1SXPS (Swift-XRT Point Source) catalog of 151,524 X-ray point-sources detected by the Swift-XRT in 8 years of operation. The catalog covers 1905 square degrees distributed approximately uniformly on the sky. We analyze the data in two ways. First we consider all observations individually, for which we have a typical sensitivity of ~3e-13 erg/cm2/s (0.3--10 keV). Then we co-add all data covering the same location on the sky: these images have a typical sensitivity of ~9e-14 erg/cm2/s (0.3--10 keV). Our sky coverage is nearly 2.5 times that of 3XMM-DR4, although the catalog is a factor of ~1.5 less sensitive. The median position error is 5.5" (90% confidence), including systematics. Our source detection method improves on that used in previous XRT catalogs and we report >68,000 new X-ray sources. The goals and observing strategy of the Swift satellite allow us to probe source variability on multiple timescales, and we find ~30,000 variable objects in our catalog. For every source we give position...

  5. Water-filtered infrared-A (wIRA overcomes swallowing disorders and hypersalivation – a case report

    Directory of Open Access Journals (Sweden)

    Hoffmann, Gerd

    2017-08-01

    Full Text Available Case description: A patient with a Barrett oesophageal carcinoma and a resection of the oesophagus with gastric pull-up developed swallowing disorders 6 years and 2 months after the operation. Within 1 year and 7 months two recurrences of the tumor at the anastomosis were found and treated with combined chemoradiotherapy or chemotherapy respectively. 7 years and 9 months after the operation local tumor masses and destruction were present with no ability to orally drink or eat (full feeding by jejunal PEG tube: quality of life was poor, as saliva and mucus were very viscous (pulling filaments and could not be swallowed and had to be spat out throughout the day and night resulting in short periods of sleep (awaking from the necessity to spit out. In total the situation was interpreted more as a problem related to a feeling of choking (with food or fluid in the sense of a functional dysphagia rather than as a swallowing disorder from a structural stenosis. At that time acetylcysteine (2 times 200 mg per day, given via the PEG tube and irradiation with water-filtered infrared-A (wIRA, a special form of heat radiation, of the ventral part of the neck and the thorax were added to the therapy. Within 1 day with acetylcysteine saliva and mucus became less viscous. Within 2 days with wIRA (one day with 4 to 5 hours with irradiation with wIRA at home salivation decreased markedly and quality of life clearly improved: For the first time the patient slept without interruption and without the need for sleep-inducing medication. After 5 days with wIRA the patient could eat his first soft dumpling although drinking of fluids was still not possible. After 2½ weeks with wIRA the patient could eat his first minced schnitzel (escalope. Following the commencement of wIRA (with typically approximately 90–150 minutes irradiation with wIRA per day the patient had 8 months with good quality of life with only small amounts of liquid saliva and mucus and without the

  6. SDSS DR7 White Dwarf Catalog

    CERN Document Server

    Kleinman, S J; Koester, D; Pelisoli, Ingrid; Peçanha, Viviane; Nitta, A; Costa, J E S; Krzesinski, J; Dufour, P; Lachapelle, F -R; Bergeron, P; Yip, Ching-Wa; Harris, Hugh C; Eisenstein, Daniel J; Althaus, L; Córsico, A

    2012-01-01

    We present a new catalog of spectroscopically-confirmed white dwarf stars from the Sloan Digital Sky Survey Data Release 7 spectroscopic catalog. We find 20,407 white dwarf spectra, representing 19,712 stars, and provide atmospheric model fits to 14,120 DA and 1011 DB white dwarf spectra from 12,843 and 923 stars, respectively. These numbers represent a more than factor of two increase in the total number of white dwarf stars from the previous SDSS white dwarf catalog based on DR4 data. Our distribution of subtypes varies from previous catalogs due to our more conservative, manual classifications of each star in our catalog, supplementing our automatic fits. In particular, we find a large number of magnetic white dwarf stars whose small Zeeman splittings mimic increased Stark broadening that would otherwise result in an overestimated log(g) if fit as a non-magnetic white dwarf. We calculate mean DA and DB masses for our clean, non-magnetic sample and find the DB mean mass is statistically larger than that for...

  7. SDSS DR7 WHITE DWARF CATALOG

    Energy Technology Data Exchange (ETDEWEB)

    Kleinman, S. J.; Nitta, A. [Gemini Observatory, 670 North A' ohoku Place, Hilo, HI 96720 (United States); Kepler, S. O.; Pelisoli, Ingrid; Pecanha, Viviane; Costa, J. E. S. [Instituto de Fisica, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS (Brazil); Koester, D. [Institut fuer Theoretische Physik und Astrophysik, Universitaet Kiel, D-24098 Kiel (Germany); Krzesinski, J. [Mt. Suhora Observatory, Pedagogical University of Cracow, ul. Podchorazych 2, 30-084 Cracow (Poland); Dufour, P.; Lachapelle, F.-R.; Bergeron, P. [Departement de Physique, Universite de Montreal, C. P. 6128, Succ. Centre-Ville, Montreal, Quebec H3C 3J7 (Canada); Yip, Ching-Wa [Department of Physics and Astronomy, The Johns Hopkins University, 3701 San Martin Drive, Baltimore, MD 21218 (United States); Harris, Hugh C. [United States Naval Observatory, Flagstaff Station, 10391 West Naval Observatory Road, Flagstaff, AZ 86001-8521 (United States); Eisenstein, Daniel J. [Harvard Smithsonian Center for Astrophysics, 60 Garden Street, MS 20, Cambridge, MA 02138 (United States); Althaus, L.; Corsico, A., E-mail: hch@nofs.navy.mil [Facultad de Ciencias Astronomicas y Geofisicas, Paseo del Bosque S/N, (1900) La Plata (Argentina)

    2013-01-15

    We present a new catalog of spectroscopically confirmed white dwarf stars from the Sloan Digital Sky Survey (SDSS) Data Release 7 spectroscopic catalog. We find 20,407 white dwarf spectra, representing 19,712 stars, and provide atmospheric model fits to 14,120 DA and 1011 DB white dwarf spectra from 12,843 and 923 stars, respectively. These numbers represent more than a factor of two increase in the total number of white dwarf stars from the previous SDSS white dwarf catalogs based on DR4 data. Our distribution of subtypes varies from previous catalogs due to our more conservative, manual classifications of each star in our catalog, supplementing our automatic fits. In particular, we find a large number of magnetic white dwarf stars whose small Zeeman splittings mimic increased Stark broadening that would otherwise result in an overestimated log g if fit as a non-magnetic white dwarf. We calculate mean DA and DB masses for our clean, non-magnetic sample and find the DB mean mass is statistically larger than that for the DAs.

  8. Version 1 of the Hubble Source Catalog

    CERN Document Server

    Whitmore, Bradley C; Budavari, Tamas; Casertano, Stefano; Downes, Ronald A; Donaldson, Thomas; Fall, S Michael; Lubow, Stephen H; Quick, Lee; Strolger, Louis-Gregory; Wallace, Geoff; White, Richard L

    2016-01-01

    The Hubble Source Catalog is designed to help optimize science from the Hubble Space Telescope by combining the tens of thousands of visit-based source lists in the Hubble Legacy Archive into a single master catalog. Version 1 of the Hubble Source Catalog includes WFPC2, ACS/WFC, WFC3/UVIS, and WFC3/IR photometric data generated using SExtractor software to produce the individual source lists. The catalog includes roughly 80 million detections of 30 million objects involving 112 different detector/filter combinations, and about 160 thousand HST exposures. Source lists from Data Release 8 of the Hubble Legacy Archive are matched using an algorithm developed by Budavari & Lubow (2012). The mean photometric accuracy for the catalog as a whole is better than 0.10 mag, with relative accuracy as good as 0.02 mag in certain circumstances (e.g., bright isolated stars). The relative astrometric residuals are typically within 10 mas, with a value for the mode (i.e., most common value) of 2.3 mas. The absolute astro...

  9. Statistical Characterization of the Chandra Source Catalog

    CERN Document Server

    Primini, Francis A; Davis, John E; Nowak, Michael A; Evans, Ian N; Glotfelty, Kenny J; Anderson, Craig S; Bonaventura, Nina R; Chen, Judy C; Doe, Stephen M; Evans, Janet D; Fabbiano, Giuseppina; Galle, Elizabeth C; Gibbs, Danny G; Grier, John D; Hain, Roger M; Hall, Diane M; Harbo, Peter N; Xiangqun,; He,; Karovska, Margarita; Kashyap, Vinay L; Lauer, Jennifer; McCollough, Michael L; McDowell, Jonathan C; Miller, Joseph B; Mitschang, Arik W; Morgan, Douglas L; Mossman, Amy E; Nichols, Joy S; Plummer, David A; Refsdal, Brian L; Rots, Arnold H; Siemiginowska, Aneta; Sundheim, Beth A; Tibbetts, Michael S; Van Stone, David W; Winkelman, Sherry L; Zografou, Panagoula

    2011-01-01

    The first release of the Chandra Source Catalog (CSC) contains ~95,000 X-ray sources in a total area of ~0.75% of the entire sky, using data from ~3,900 separate ACIS observations of a multitude of different types of X-ray sources. In order to maximize the scientific benefit of such a large, heterogeneous data-set, careful characterization of the statistical properties of the catalog, i.e., completeness, sensitivity, false source rate, and accuracy of source properties, is required. Characterization efforts of other, large Chandra catalogs, such as the ChaMP Point Source Catalog (Kim et al. 2007) or the 2 Mega-second Deep Field Surveys (Alexander et al. 2003), while informative, cannot serve this purpose, since the CSC analysis procedures are significantly different and the range of allowable data is much less restrictive. We describe here the characterization process for the CSC. This process includes both a comparison of real CSC results with those of other, deeper Chandra catalogs of the same targets and e...

  10. An Open Catalog for Supernova Data

    CERN Document Server

    Guillochon, James; Margutti, Raffaella

    2016-01-01

    We present the Open Supernova Catalog, an online collection of observations and metadata for presently 20,000+ supernovae and related candidates. The catalog is freely available on the web (https://sne.space), with its main interface having been designed to be a user-friendly, rapidly-searchable table accessible on desktop and mobile devices. In addition to the primary catalog table containing supernova metadata, an individual page is generated for each supernova which displays its available metadata, light curves, and spectra spanning X-ray to radio frequencies. The data presented in the catalog is automatically rebuilt on a daily basis and is constructed by parsing several dozen sources, including the data presented in the supernova literature and from secondary sources such as other web-based catalogs. Individual supernova data is stored in the hierarchical, human- and machine-readable JSON format, with the entirety of each supernova's data being contained within a single JSON file bearing its name. The se...

  11. Scientific Satellites

    Science.gov (United States)

    1967-01-01

    followed Hale’s into orbit. In 1879, Jules Verne wrote about launching small satellites with a gun possessing a muzzle velocity of 10 000 m/sec (ref. 3...was activated in 1950.11 It was located only a few tens of miles from the spot where Jules Verne had his Baltimore Gun Club fire a manned projectile to...principle, satellites can be launched by a single impulse applied at the Earth’s surface-say, with a large cannon, & la Jules Verne (sec. 8-3). In

  12. A Limit on the Number of Isolated Neutron Stars Detected in the ROSAT Bright Source Catalog

    CERN Document Server

    Rutledge, R E; Bogosavljevic, M; Mahabal, A A; Rutledge, Robert E.; Fox, Derek W.; Bogosavljevic, Milan; Mahabal, Ashish

    2003-01-01

    The challenge in searching for non-radio-pulsing isolated neutron stars (INSs) is in excluding association with objects in the very large error boxes (~13", 1 sigma radius) typical of sources from the largest X-ray all-sky survey, the ROSAT All-Sky-Survey/Bright Source Catalog (RASS/BSC). We search for candidate INSs using statistical analysis of optical (USNO-A2), infrared (IRAS), and radio (NVSS) sources near the ROSAT X-ray localization, and show that this selection would find 20% of the INSs in the RASS/BSC. This selection finds 32 candidates at declinations greater than -39 deg, among which are two previously known INSs, seventeen sources which we show are not INSs, and thirteen the classification of which are as yet undetermined. These results require a limit of <67 INSs (90% confidence, full sky, assuming isotropy) in the RASS/BSC. This limit modestly constrains a naive and optimistic model for cooling NSs in the galaxy.

  13. VLBA observations of the nuclear transient AT 2017gbl in IRAS 23436+5257

    Science.gov (United States)

    Perez-Torres, Miguel; Kool, Erik; Ryder, Stuart; Mattila, Seppo; Fraser, Morgan; Kankare, Erkki

    2017-09-01

    We report on simultaneous radio interferometric observations of the luminous nuclear transient AT 2017gbl, carried out at 4.4 and 7.6 GHz with the Very Long Baseline Array (VLBA) on 2017 August 15.38 UT. AT 2017gbl was discovered in the near-infrared on MJD 57942.56 (ATel #10651) superimposed on the nucleus of the galaxy IRAS 23436+5257 (D= 146 Mpc).

  14. Detailed atmospheric abundance analysis of the optical counterpart of the IR source IRAS 16559-2957

    CERN Document Server

    Molina, R E

    2013-01-01

    We have undertaken a detailed abundance analysis of the optical counterpart of the IR source IRAS16559-2957 with the aim of confirming its possible post-AGB nature. The star shows solar metallicity and our investigation of a large number of elements including CNO and 12C/13C suggests that this object has experienced the first dredge-up and it is likely still at RGB stage.

  15. Anatomy of the internal bow shocks in the IRAS 04166+2706 protostellar jet

    Science.gov (United States)

    Tafalla, M.; Su, Y.-N.; Shang, H.; Johnstone, D.; Zhang, Q.; Santiago-García, J.; Lee, C.-F.; Hirano, N.; Wang, L.-Y.

    2017-01-01

    Context. Highly collimated jets and wide-angle outflows are two related components of the mass-ejection activity associated with stellar birth. Despite decades of research, the relation between these two components remains poorly understood. Aims: We study the relation between the jet and the outflow in the IRAS 04166+2706 protostar. This Taurus protostar drives a molecular jet that contains multiple emission peaks symmetrically located from the central source. The protostar also drives a wide-angle outflow consisting of two conical shells. Methods: We have used the Atacama Large Millimeter/submillimeter Array (ALMA) interferometer to observe two fields along the IRAS 04166+2706 jet. The fields were centered on a pair of emission peaks that correspond to the same ejection event. The observations were carried out in CO(2-1), SiO(5-4), and SO(JN = 65-54). Results: Both ALMA fields present spatial distributions that are approximately elliptical and have their minor axes aligned with the jet direction. As the velocity increases, the emission in each field moves gradually across the elliptical region. This systematic pattern indicates that the emitting gas in each field lies in a disk-like structure that is perpendicular to the jet axis and whose gas is expanding away from the jet. A small degree of curvature in the first-moment maps indicates that the disks are slightly curved in the manner expected for bow shocks moving away from the IRAS source. A simple geometrical model confirms that this scenario fits the main emission features. Conclusions: The emission peaks in the IRAS 04166+2706 jet likely represent internal bow shocks where material is being ejected laterally away from the jet axis. While the linear momentum of the ejected gas is dominated by the component in the jet direction, the sideways component is not negligible, and can potentially affect the distribution of gas in the surrounding outflow and core.

  16. IRAS F02044+0957 radio source in interacting system of galaxies

    CERN Document Server

    Verkhodanov, O V; Mujica, R; Valdés, J R; Trushkin, S A

    2001-01-01

    The steep spectrum of IRAS F02044+0957 was obtained with the RATAN-600 radio telescope at four frequencies. Optical spectroscopy of the system components, was carried out with the 2.1m telescope of the Guillermo Haro Observatory. Observational data allow us to conclude that this object is a pair of interacting galaxies, a LINER and a HII galaxy, at $z=0.093$.

  17. A PRE-MERGER IN THE LUMINOUS INFRARED SYSTEM IRAS 02290+2533

    Directory of Open Access Journals (Sweden)

    Fidel Cruz

    2009-01-01

    originado por la interacci n gravitacional en curso con la galaxia A. La galaxia B puede ser clasi cada como una Galaxia Infrarroja Luminosa (LIRG. Estimamos que una fusi n binaria de galaxias puede ocurrir en el sistema dentro de < 1 Gyr. Es probable que esta fuente IRAS albergue en un futuro una galaxia Ultra LIRG, en concordancia con el modelo evolutivo de Sanders & Mirabel (1996.

  18. Measurement of the Pulse Radiation of an IRA in Time Domain

    Science.gov (United States)

    Stadtler, Thiemo; Ter Haseborg, Jan Luiken; Sabath, Frank

    For radiation of UWB pulses special Impulse Radiating Antennas (IRA) have been designed and are continuously improved. The measurement of its near field can help optimizing this antenna type. This paper presents a time domain scanner which is able to determine the transient near field. The so called double probe near field scanner can be employed to measure the two dimensional field distribution in time domain.

  19. Water-filtered infrared-A radiation (wIRA is not implicated in cellular degeneration of human skin

    Directory of Open Access Journals (Sweden)

    Applegate, Lee Ann

    2007-11-01

    Full Text Available Background: Excessive exposure to solar ultraviolet radiation is involved in the complex biologic process of cutaneous aging. Wavelengths in the ultraviolet-A and -B range (UV-A and UV-B have been shown to be responsible for the induction of proteases, e. g. the collagenase matrix metalloproteinase 1 (MMP-1, which are related to cell aging. As devices emitting longer wavelengths are widely used in therapeutic and cosmetic interventions and as the induction of MMP-1 by water-filtered infrared-A (wIRA had been discussed, it was of interest to assess effects of wIRA on the cellular and molecular level known to be possibly involved in cutaneous degeneration. Objectives: Investigation of the biological implications of widely used water-filtered infrared-A (wIRA radiators for clinical use on human skin fibroblasts assessed by MMP-1 gene expression (MMP-1 messenger ribonucleic acid (mRNA expression. Methods: Human skin fibroblasts were irradiated with approximately 88% wIRA (780-1400 nm and 12% red light (RL, 665-780 nm with 380 mW/cm² wIRA(+RL (333 mW/cm² wIRA on the one hand and for comparison with UV-A (330-400 nm, mainly UV-A1 and a small amount of blue light (BL, 400-450 nm with 28 mW/cm² UV-A(+BL on the other hand. Survival curves were established by colony forming ability after single exposures between 15 minutes and 8 hours to wIRA(+RL (340-10880 J/cm² wIRA(+RL, 300-9600 J/cm² wIRA or 15-45 minutes to UV-A(+BL (25-75 J/cm² UV-A(+BL. Both conventional Reverse Transcriptase Polymerase Chain Reaction (RT-PCR and quantitative real-time RT-PCR techniques were used to determine the induction of MMP-1 mRNA at two physiologic temperatures for skin fibroblasts (30°C and 37°C in single exposure regimens (15-60 minutes wIRA(+RL, 340-1360 J/cm² wIRA(+RL, 300-1200 J/cm² wIRA; 30 minutes UV-A(+BL, 50 J/cm² UV-A(+BL and in addition at 30°C in a repeated exposure protocol (up to 10 times 15 minutes wIRA(+RL with 340 J/cm² wIRA(+RL, 300 J/cm² wIRA

  20. History of the solar-type protostar IRAS16293-2422 as told by the cyanopolyynes

    CERN Document Server

    Jaber, A A; Kahane, C; Viti, S; Balucani, N; Caux, E; Faure, A; Lefloch, B; Lique, F; Mendoza, E; Quenard, D; Wiesenfeld, L

    2016-01-01

    Cyanopolyynes are chains of carbon atoms with an atom of hydrogen and a CN group on either side. They are detected almost everywhere in the ISM, as well as in comets. In the past, they have been used to constrain the age of some molecular clouds, since their abundance is predicted to be a strong function of time. We present an extensive study of the cyanopolyynes distribution in the solar-type protostar IRAS16293-2422 based on TIMASSS IRAM-30m observations. The goals are (i) to obtain a census of the cyanopolyynes in this source and of their isotopologues; (ii) to derive how their abundance varies across the protostar envelope; and (iii) to obtain constraints on the history of IRAS16293-2422. We detect several lines from HC3N and HC5N, and report the first detection of DC3N, in a solar-type protostar. We found that the HC3N abundance is roughly constant (~1.3x10^(-11)) in the outer cold envelope of IRAS16293-2422, and it increases by about a factor 100 in the inner region where Tdust>80K. The HC5N has an abun...

  1. Expresión de la ira y autoconcepto en adolescentes tempranos

    Directory of Open Access Journals (Sweden)

    Yuri Arsenio Sanz-Martínez

    2012-01-01

    Full Text Available Abordó la exploración de las implicaciones de las modalidades de expresión de la ira entre adolescentes tempranos de la zona oriental de Cuba. La muestra estuvo compuesta por 498 adolescentes tempranos de Holguín y Santiago de Cuba respectivamente. Se obtuvo que la expresión abierta, y destructiva de la ira correlacionó negativamente con el autoconcepto en dominios de la escuela y las relaciones con el sexo opuesto. La expresión inhibida o interiorizada de esta emoción predijo fuertemente aspectos del autoconcepto relacionados con el dominio de la escuela. La ira expresada de forma controlada, calmada y asertiva se relacionó fuertemente con el autoconcepto en dimensiones generales, del ámbito escolar, de las relaciones interpersonales y de cualidades de honestidad y seguridad. Se recomienda realizar estudios paralelos para obtener información en otras etapas del desarrollo humano.

  2. Millimetric and sub-millimetric observations of IRAS 05327+3404 "Holoea" in M36

    CERN Document Server

    Morata, O; Ho, P T P; Huang, H C; Magnier, E A; Zhao-Geisler, R

    2013-01-01

    The transition between the proto-star, Class I, and the pre-main sequence star, Class II, phases is still one of the most uncertain, and important, stages in the knowledge of the process of formation of an individual star, because it is the stage that determines the final mass of the star. We observed the YSO "Holoea", associated with IRAS 05327+3404, which was classified as an object in transition between the Class I and Class II phases with several unusual properties, and appears to be surrounded by large amounts of circumstellar material. We used the SMA and BIMA telescopes at millimeter and sub-millimeter wavelengths to observe the dust continuum emission and the CO (1-0) and (2-1), HCO+ (1-0) and (3-2), and HCN (1-0) transitions in the region around IRAS 05327+3404. We detected two continuum emission peaks at 1.1-mm: SMM 1, the sub-mm counterpart of IRAS 05327+3404, and SMM 2, ~6 arcsec to the West. The emissions of the three molecules show marked differences. The CO emission near the systemic velocity i...

  3. Detection of glycolaldehyde towards the solar-type protostar NGC1333 IRAS2A

    CERN Document Server

    Coutens, Audrey; Jørgensen, Jes K; Wampfler, Susanne F; Lykke, Julie M

    2015-01-01

    Glycolaldehyde is a key molecule in the formation of biologically relevant molecules such as ribose. We report its detection with the Plateau de Bure interferometer towards the Class 0 young stellar object NGC1333 IRAS2A, which is only the second solar-type protostar for which this prebiotic molecule is detected. Local thermodynamic equilibrium analyses of glycolaldehyde, ethylene glycol (the reduced alcohol of glycolaldehyde) and methyl formate (the most abundant isomer of glycolaldehyde) were carried out. The relative abundance of ethylene glycol to glycolaldehyde is found to be ~5 -higher than in the Class 0 source IRAS 16293-2422 (~1), but comparable to the lower limits derived in comets ($\\geq$3-6). The different ethylene glycol-to-glycolaldehyde ratios in the two protostars could be related to different CH3OH:CO compositions of the icy grain mantles. In particular, a more efficient hydrogenation on the grains in NGC 1333 IRAS2A would favor the formation of both methanol and ethylene glycol. In conclusio...

  4. Methanol Observation of IRAS 19312+1950: A Possible New Type of Class I Methanol Masers

    CERN Document Server

    Nakashima, Jun-ichi; Salii, Svetlana V; Zhang, Yong; Yung, Bosco H K; Deguchi, Shuji

    2015-01-01

    We report the result of a systematic methanol observation toward IRAS 19312+1950. The properties of the SiO, H2O and OH masers of this object are consistent with those of mass-losing evolved stars, but some other properties are difficult to explain in the standard scheme of stellar evolution in its late stage. Interestingly, a tentative detection of radio methanol lines was suggested toward this object by a previous observation. To date, there are no confirmed detections of methanol emission towards evolved stars, so investigation of this possible detection is important to better understand the circumstellar physical/chemical environment of IRAS 19312+1950. In this study, we systematically observed multiple methanol lines of IRAS 19312+1950 in the lambda=3mm, 7mm, and 13mm bands, and detected 6 lines including 4 thermal lines and 2 class I maser lines. We derived basic physical parameters including kinetic temperature and relative abundances by fitting a radiative transfer model. According to the derived exci...

  5. Origin of the Characteristic X-ray Spectral Variations of IRAS 13224$-$3809

    CERN Document Server

    Yamasaki, Hiroki; Ebisawa, Ken; Sameshima, Hiroaki

    2016-01-01

    The Narrow-line Seyfert 1 galaxy (NLS1) IRAS 13224$-$3809 is known to exhibit significant X-ray spectral variation, a sharp spectral drop at $\\sim$ 7 keV, strong soft excess emission, and a hint of iron L-edge feature, which is very similar to the NLS1 1H 0707$-$495. We have proposed the "Variable Double Partial Covering (VDPC) model" to explain the energy spectra and spectral variability of 1H 0707$-$495 (Mizumoto, Ebisawa and Sameshima 2014, PASJ, 66, 122). In this model, the observed flux/spectral variations below 10 keV within a $\\sim$day are primarily caused by change of the partial covering fraction of patchy clouds composed by double absorption layers in the line of sight. In this paper, we apply the VDPC model to IRAS 13224$-$3809. Consequently, we have found that the VDPC model can explain the observed spectral variations of IRAS 13224$-$3809 in the 0.5$-$10 keV band. In particular, we can explain the observed Root Mean Square (RMS) spectra (energy dependence of the fractional flux variation) in the ...

  6. The Best Cataloger is a Frustrated Library User: Cataloging Failure and the Underutilization of Library Resources

    Directory of Open Access Journals (Sweden)

    John W. Thompson

    2015-08-01

    Full Text Available This essay points out that inconsistencies in the assignment of subject headings and call number can lead to failure to retrieve relevant materials from our libraries. Today it is frequently asserted that bibliographic records cataloged by the Library of Congress or other approved libraries will not require review or editing in our local libraries. This paper provides clear, but by no means unique examples of “cataloging failure” and explains the implications of a policy to add unedited bibliographic records (from vendors such as OCLC to our library catalogs. The result is the omission of otherwise relevant titles from fairly routine searches.

  7. Water-filtered infrared-A (wIRA can act as a penetration enhancer for topically applied substances

    Directory of Open Access Journals (Sweden)

    Sterry, Wolfram

    2008-07-01

    Full Text Available Background: Water-filtered infrared-A (wIRA irradiation has been shown to enhance penetration of clinically used topically applied substances in humans through investigation of functional effects of penetrated substances like vasoconstriction by cortisone. Aim of the study: Investigation of the influence of wIRA irradiation on the dermatopharmacokinetics of topically applied substances by use of optical methods, especially to localize penetrating substances, in a prospective randomised controlled study in humans. Methods: The penetration profiles of the hydrophilic dye fluorescein and the lipophilic dye curcumin in separate standard water-in-oil emulsions were determined on the inner forearm of test persons by tape stripping in combination with spectroscopic measurements. Additionally, the penetration was investigated in vivo by laser scanning microscopy. Transepidermal water loss, hydration of the epidermis, and surface temperature were determined. Three different procedures (modes A, B, C were used in a randomised order on three separate days of investigation in each of 12 test persons. In mode A, the two dyes were applied on different skin areas without water-filtered infrared-A (wIRA irradiation. In mode B, the skin surface was irradiated with wIRA over 30 min before application of the two dyes (Hydrosun® radiator type 501, 10 mm water cuvette, orange filter OG590, water-filtered spectrum: 590–1400 nm with dominant amount of wIRA. In mode C, the two dyes were applied and immediately afterwards the skin was irradiated with wIRA over 30 min. In all modes, tape stripping started 30 min after application of the formulations. Main variable of interest was the ratio of the amount of the dye in the deeper (second 10% of the stratum corneum to the amount of the dye in the upper 10% of the stratum corneum. Results: The penetration profiles of the hydrophilic fluorescein showed in case of pretreatment or treatment with wIRA (modes B and C an

  8. Safeguards instrumentation: a computer-based catalog

    Energy Technology Data Exchange (ETDEWEB)

    Fishbone, L.G.; Keisch, B.

    1981-08-01

    The information contained in this catalog is needed to provide a data base for safeguards studies and to help establish criteria and procedures for international safeguards for nuclear materials and facilities. The catalog primarily presents information on new safeguards equipment. It also describes entire safeguards systems for certain facilities, but it does not describe the inspection procedures. Because IAEA safeguards do not include physical security, devices for physical protection (as opposed to containment and surveillance) are not included. An attempt has been made to list capital costs, annual maintenance costs, replacement costs, and useful lifetime for the equipment. For equipment which is commercially available, representative sources have been listed whenever available.

  9. Catalog of Investment Projects in Bulgaria

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2011-10-15

    This catalog includes information about 129 potential investment projects in Bulgaria and was developed by a team of experts from InvestBulgaria Agency in cooperation with municipalities and private companies. The document presents in brief general facts about the regions in Bulgaria. Projects are divided into the following categories: Tourism, Manufacturing, Urban Planning, Real Estate, Environment and renewable energy sources, Commerce, and Innovative and creative projects. The catalog provides detailed information about each project such as: status of the project, location, ownership, infrastructure, estimated value, contact information, etc.

  10. New Trends in Cataloging Rare and Special Materials.

    Science.gov (United States)

    Leslie, Deborah J.

    2003-01-01

    Reports on the American Library Association's efforts to update the Descriptive Cataloging of Rare Materials (DCRM). Describes topics of working groups that include transcription of early letter forms, rare book cataloging of machine-press books, collection-level cataloging, problems and lacunae, and varieties of editions and issues and when to…

  11. 48 CFR 752.7022 - Conflicts between contract and catalog.

    Science.gov (United States)

    2010-10-01

    ... and catalog. 752.7022 Section 752.7022 Federal Acquisition Regulations System AGENCY FOR INTERNATIONAL....7022 Conflicts between contract and catalog. For use in contracts for participant training with an educational institution. Conflicts Between Contract and Catalog (APR 1984) In the event of any...

  12. The Catalog in the Courtroom: From Shield to Sword?

    Science.gov (United States)

    Davenport, David

    1985-01-01

    Legal issues concerning the content and use of the college catalog are reviewed, including the catalog's changing role as a consumer document, misrepresentation, violation of statute, breach of contract, court interpretations, and remedies. Colleges are cautioned to take great care in using catalogs, for legal and administrative reasons. (MSE)

  13. History of the solar-type protostar IRAS 16293-2422 as told by the cyanopolyynes

    Science.gov (United States)

    Jaber Al-Edhari, A.; Ceccarelli, C.; Kahane, C.; Viti, S.; Balucani, N.; Caux, E.; Faure, A.; Lefloch, B.; Lique, F.; Mendoza, E.; Quenard, D.; Wiesenfeld, L.

    2017-01-01

    Context. Cyanopolyynes are chains of carbon atoms with an atom of hydrogen and a CN group on either side. They are detected almost everywhere in the interstellar medium (ISM), as well as in comets. In the past, they have been used to constrain the age of some molecular clouds, since their abundance is predicted to be a strong function of time. Finally, cyanopolyynes can potentially contain a large portion of molecular carbon. Aims: We present an extensive study of the cyanopolyynes distribution in the solar-type protostar IRAS 16293-2422. The goals are (i) to obtain a census of the cyanopolyynes in this source and of their isotopologues; (ii) to derive how their abundance varies across the protostar envelope; and (iii) to obtain constraints on the history of IRAS 16293-2422 by comparing the observations with the predictions of a chemical model. Methods: We analysed the data from the IRAM-30 m unbiased millimeter and submillimeter spectral survey towards IRAS 16293-2422 named TIMASSS. The derived spectral line energy distribution (SLED) of each detected cyanopolyyne was compared with the predictions from the radiative transfer code GRenoble Analysis of Protostellar Envelope Spectra (GRAPES) to derive the cyanopolyyne abundances across the envelope of IRAS 16293-2422. Finally, the derived abundances were compared with the predictions of the chemical model UCL_CHEM. Results: We detect several lines from cyanoacetylene (HC3N) and cyanodiacetylene (HC5N), and report the first detection of deuterated cyanoacetylene, DC3N, in a solar-type protostar. We found that the HC3N abundance is roughly constant ( 1.3 × 10-11) in the outer cold envelope of IRAS 16293-2422, and it increases by about a factor 100 in the inner region where the dust temperature exceeds 80 K, namely when the volcano ice desorption is predicted to occur. The HC5N has an abundance similar to HC3N in the outer envelope and about a factor of ten lower in the inner region. The comparison with the chemical

  14. VizieR Online Data Catalog: Binary star discoveries in the URAT1 catalog (Nicholson, 2015)

    Science.gov (United States)

    Nicholson, M. P.

    2015-05-01

    Astrometric and photometric data are presented for 9450 common proper motion binary star system using results from the first U.S. Naval Observatory Astrometric Robotic Telescope Catalog (URAT1) (1 data file).

  15. GAIA Service Catalog: A Framework for the Construction of IT Service Catalogs

    Directory of Open Access Journals (Sweden)

    TACONI, L. H.

    2014-12-01

    Full Text Available The high amount of IT services offered to organizations for boosting and maintaining their business goals makes it difficult to determine the quantity, description and the attributes of these services. This paper presents a framework to support the construction of IT Service Catalogs. The framework consists of a diagnostic assessment questionnaire, a maturity model and a set of services that guide the organization in the construction of an IT Service Catalog.

  16. VizieR Online Data Catalog: Galactic O star catalog (Maiz-apellaniz+, 2004)

    Science.gov (United States)

    Maiz-Apellaniz, J.; Walborn, N. R.; Galue, H. A.; Wei, L. H.

    2004-04-01

    We have produced a catalog of 378 Galactic O stars with accurate spectral classifications that is complete for V<8 but includes many fainter stars. The catalog provides cross-identifications with other sources; coordinates (obtained in most cases from Tycho-2 data); astrometric distances for 24 of the nearest stars; optical (Tycho-2, Johnson, and Stroemgren) and NIR photometry; group membership, runaway character, and multiplicity information; and a Web-based version with links to on-line services. (9 data files).

  17. CDF Run Ⅱ Data File Catalog

    Institute of Scientific and Technical Information of China (English)

    J.Kowalkowski; F.Ratnikov; 等

    2001-01-01

    The CDF experiment started data taking in April 2001,The data are organized into datasets which contain events of similar physics properties and reconstruction version.the information about datasets is stored in the Data File Catalog,a relational database.This information is presented to the data processing framework as objects which are retrieved using compound keys.The objects and the keys are designed to be the algorithms' view of information stored in the database.Objects may use several DB tables.A database interface management layer exists for the purpose of managing the mapping of persistent data to transient objects that can be used by the framework.This layer exists between the algorithm code and the code which reads directly from datanbase tables.At the user end,it places get/put interface on a top of a transient class for retrieval or storage of objects of this class using a key.Data File Catalog code makes use of this facility and contains all the code needed to manipulate CDF Data File Catalog from a C++ program or from the command prompt,It supports an Oracle interface using OTL,and a mSQL interface,This code and the Oravcle implementation of Data File Catalog were subjected to test during CDF Commissioning Run last fall and during first weeks of Run II in April.It performed exceptionally well.

  18. Database Cleanup: Errors in the Catalog.

    Science.gov (United States)

    Trombly, Susan T.

    2001-01-01

    Discusses the need for libraries to clean up their catalog databases to eliminate duplicate entries, update bibliographic or authority records, and correct errors. Reviews pertinent literature and considers methods that include human review as well as software and matching programs. (LRW)

  19. Georgia Tech Catalog of Gravitational Waveforms

    CERN Document Server

    Jani, Karan; Clark, James A; London, Lionel; Laguna, Pablo; Shoemaker, Deirdre

    2016-01-01

    This paper introduces a catalog of gravitational waveforms from the bank of simulations by the numerical relativity effort at Georgia Tech. Currently, the catalog consists of 452 distinct waveforms from more than 600 binary black hole simulations: 128 of the waveforms are from binaries with black hole spins aligned with the orbital angular momentum, and 324 are from precessing binary black hole systems. The waveforms from binaries with non-spinning black holes have mass-ratios $q = m_1/m_2 \\le 15$, and those with precessing, spinning black holes have $q \\le 8$. The waveforms expand a moderate number of orbits in the late inspiral, the burst during coalescence, and the ring-down of the final black hole. Examples of waveforms in the catalog matched against the widely used approximate models are presented. In addition, predictions of the mass and spin of the final black hole by phenomenological fits are tested against the results from the simulation bank. The role of the catalog in interpreting the GW150914 even...

  20. Software Methodology Catalog. Second Edition. Revision

    Science.gov (United States)

    1989-03-01

    meet with universal agreement. The experience of creating the catalog convinced the authors that these choices were reasonable. Accordingly, the authors...need to categorize concepts in order to attain some level of abstraction. Currently, terminology in software engineering is not universally agreed...mention syntax, typography , readability, stepwise refinement, or top-down development. Instead, his main argument for structured programming was to

  1. A catalog of the mouse gut metagenome

    DEFF Research Database (Denmark)

    Xiao, Liang; Feng, Qiang; Liang, Suisha;

    2015-01-01

    We established a catalog of the mouse gut metagenome comprising ∼2.6 million nonredundant genes by sequencing DNA from fecal samples of 184 mice. To secure high microbiome diversity, we used mouse strains of diverse genetic backgrounds, from different providers, kept in different housing laborato...

  2. Some Benefits of the Online Catalog.

    Science.gov (United States)

    Getz, Malcolm

    1987-01-01

    Reports measures of the gains in search time and likelihood of success in known-item searches with the Acorn automated catalog at Vanderbilt University. User time and search success are valued in dollar terms to make the measures meaningful for system design choices. (Author/CLB)

  3. New Catalog of Resources Enables Paleogeosciences Research

    Science.gov (United States)

    Lingo, R. C.; Horlick, K. A.; Anderson, D. M.

    2014-12-01

    The 21st century promises a new era for scientists of all disciplines, the age where cyber infrastructure enables research and education and fuels discovery. EarthCube is a working community of over 2,500 scientists and students of many Earth Science disciplines who are looking to build bridges between disciplines. The EarthCube initiative will create a digital infrastructure that connects databases, software, and repositories. A catalog of resources (databases, software, repositories) has been produced by the Research Coordination Network for Paleogeosciences to improve the discoverability of resources. The Catalog is currently made available within the larger-scope CINERGI geosciences portal (http://hydro10.sdsc.edu/geoportal/catalog/main/home.page). Other distribution points and web services are planned, using linked data, content services for the web, and XML descriptions that can be harvested using metadata protocols. The databases provide searchable interfaces to find data sets that would otherwise remain dark data, hidden in drawers and on personal computers. The software will be described in catalog entries so just one click will lead users to methods and analytical tools that many geoscientists were unaware of. The repositories listed in the Paleogeosciences Catalog contain physical samples found all across the globe, from natural history museums to the basements of university buildings. EarthCube has over 250 databases, 300 software systems, and 200 repositories which will grow in the coming year. When completed, geoscientists across the world will be connected into a productive workflow for managing, sharing, and exploring geoscience data and information that expedites collaboration and innovation within the paleogeosciences, potentially bringing about new interdisciplinary discoveries.

  4. IRAS 11472-0800: an extremely depleted pulsating binary post-AGB star

    Science.gov (United States)

    Van Winckel, H.; Hrivnak, B. J.; Gorlova, N.; Gielen, C.; Lu, W.

    2012-06-01

    Aims: We focus here on one particular and poorly studied object, IRAS 11472-0800. It is a highly evolved post-asymptotic giant branch (post-AGB) star of spectral type F, with a large infrared excess produced by thermal emission of circumstellar dust. Methods: We deployed a multi-wavelength study that includes the analyses of optical and IR spectra as well as a variability study based on photometric and spectroscopic time-series. Results: The spectral energy distribution (SED) properties as well as the highly processed silicate N-band emission show that the dust in IRAS 11472-0800 is likely trapped in a stable disc. The energetics of the SED and the colour variability show that our viewing angle is close to edge-on and that the optical flux is dominated by scattered light. With photospheric abundances of [Fe/H] = -2.7 and [Sc/H] = -4.2, we discovered that IRAS 11472-0800 is one of the most chemically-depleted objects known to date. Moreover, IRAS 11472-0800 is a pulsating star with a period of 31.16 days and a peak-to-peak amplitude of 0.6 mag in V. The radial velocity variability is strongly influenced by the pulsations, but the significant cycle-to-cycle variability is systematic on a longer time scale, which we interpret as evidence for binary motion. Conclusions: We conclude that IRAS 11472-0800 is a pulsating binary star surrounded by a circumbinary disc. The line-of-sight towards the object lies close to the orbital plane, therefore the optical light is dominated by scattered light. IRAS 11472-0800 is one of the most chemically-depleted objects known so far and links the dusty RV Tauri stars to the non-pulsating class of strongly depleted objects. Based on observations collected at the European Southern Observatory, Chile. Programme ID: 65.L-0615(A), on observations made with the Mercator Telescope, operated on the island of La Palma by the Flemish Community, at the Spanish Observatorio del Roque de los Muchachos and on observations obtained with the HERMES

  5. Transiting Exoplanet Survey Satellite (TESS)

    Science.gov (United States)

    Ricker, G. R.; Clampin, M.; Latham, D. W.; Seager, S.; Vanderspek, R. K.; Villasenor, J. S.; Winn, J. N.

    2012-01-01

    The Transiting Exoplanet Survey Satellite (TESS) will discover thousands of exoplanets in orbit around the brightest stars in the sky. In a two-year survey, TESS will monitor more than 500,000 stars for temporary drops in brightness caused by planetary transits. This first-ever spaceborne all-sky transit survey will identify planets ranging from Earth-sized to gas giants, around a wide range of stellar types and orbital distances. No ground-based survey can achieve this feat. A large fraction of TESS target stars will be 30-100 times brighter than those observed by Kepler satellite, and therefore TESS . planets will be far easier to characterize with follow-up observations. TESS will make it possible to study the masses, sizes, densities, orbits, and atmospheres of a large cohort of small planets, including a sample of rocky worlds in the habitable zones of their host stars. TESS will provide prime targets for observation with the James Webb Space Telescope (JWST), as well as other large ground-based and space-based telescopes of the future. TESS data will be released with minimal delay (no proprietary period), inviting immediate community-wide efforts to study the new planets. The TESS legacy will be a catalog of the very nearest and brightest main-sequence stars hosting transiting exoplanets, thus providing future observers with the most favorable targets for detailed investigations.

  6. The Colors of Central and Satellite Galaxies in zCOSMOS Out to z ~= 0.8 and Implications for Quenching

    NARCIS (Netherlands)

    Knobel, C.; Lilly, S. J.; Kovac, K.; Peng, Y.; Bschorr, T. J.; Carollo, C. M.; Contini, T.; Kneib, J. -P.; Le Fevre, O.; Mainieri, V.; Renzini, A.; Scodeggio, M.; Zamorani, G.; Bardelli, S.; Bolzonella, M.; Bongiorno, A.; Caputi, K.; Cucciati, O.; de la Torre, S.; de Ravel, L.; Franzetti, P.; Garilli, B.; Iovino, A.; Kampczyk, P.; Lamareille, F.; Le Borgne, J. -F.; Le Brun, V.; Maier, C.; Mignoli, M.; Pello, R.; Perez Montero, E.; Presotto, V.; Silverman, J.; Tanaka, M.; Tasca, L.; Tresse, L.; Vergani, D.; Zucca, E.; Barnes, L.; Bordoloi, R.; Cappi, A.; Cimatti, A.; Coppa, G.; Koekemoer, A. M.; Lopez-Sanjuan, C.; McCracken, H. J.; Moresco, M.; Nair, P.; Pozzetti, L.; Welikala, N.

    2013-01-01

    We examine the red fraction of central and satellite galaxies in the large zCOSMOS group catalog out to z similar or equal to 0.8, correcting for both the incompleteness in stellar mass and for the less than perfect purities of the central and satellite samples. We show that at all masses and at all

  7. Active galactic nucleus torus models and the puzzling infrared spectrum of IRAS F10214+4724

    Science.gov (United States)

    Efstathiou, A.; Christopher, N.; Verma, A.; Siebenmorgen, R.

    2013-12-01

    We present a revised model for the infrared emission of the hyperluminous infrared galaxy IRAS F10214+4724 which takes into account recent photometric data from Spitzer and Herschel that sample the peak of its spectral energy distribution. We first present and discuss a grid of smooth active galactic nucleus (AGN) torus models computed with the method of Efstathiou & Rowan-Robinson and demonstrate that the combination of these models and the starburst models of Efstathiou and coworkers, while able to give an excellent fit to the average spectrum of Seyfert 2s and spectra of individual type 2 quasars measured by Spitzer, fails to match the spectral energy distribution of IRAS F10214+4724. This is mainly due to the fact that the νSν distribution of the galaxy falls very steeply with increasing frequency (a characteristic that is usually indicative of heavy absorption by dust) but shows a silicate feature in emission. Such emission features are not expected in sources with optical/near-infrared type 2 AGN spectral signatures. The Herschel data show that there is more power emitted in the rest-frame 20-50 μm wavelength range compared with the model presented by Efstathiou which assumes three components of emission: an edge-on torus, clouds (at a temperature of 610 and 200 K) that are associated with the narrow-line region (NLR) and a highly obscured starburst that dominates in the submillimetre. We present a revised version of that model that assumes an additional component of emission which we associate with NLR clouds at a temperature of 100 K. The 100 K dust component could also be explained by a highly obscured hot starburst. The model suggests that the NLR of IRAS F10214+4724 has an unusually high covering factor (≥17 per cent) or more likely the magnification of the emission from the NLR clouds is significantly higher than that of the emission from the torus.

  8. IRAS 19520+2759: a 105 L⊙ massive young stellar object driving a collimated outflow

    Science.gov (United States)

    Palau, Aina; Sánchez Contreras, C.; Sahai, R.; Sánchez-Monge, Á.; Rizzo, J. R.

    2013-01-01

    The theory of massive star formation currently suffers from a scarce observational base of massive young stellar objects to compare with. In this paper, we present interferometric 12CO (1-0), 13CO (1-0), C18O (1-0) and 2.6 mm continuum images of the infrared source IRAS 19520+2759 together with complementary single-dish observations of CS (1-0), obtained with the 34 m antenna DSS-54 at the Madrid Deep Space Communications Complex, as well as archive images at different wavelengths. As a result from our work, IRAS 19520+2759, with a controversial nature in the past, is firmly established as a massive young stellar object associated with a strong and compact millimetre source and driving a collimated outflow. In addition, a second fainter millimetre source is discovered about 4 arcsec to the south, which is also driving an outflow. Furthermore, the two millimetre sources are associated with C18O clumps elongated perpendicularly to the outflows, which may be related to rotating toroids. The masses of gas and dust of the millimetre sources are estimated to be around 100 and 50 M⊙. MM1, the dominant source at all wavelengths, with a total luminosity of (1-2) × 105 L⊙ at 9 kpc, is however not associated with 6 cm emission down to an rms noise level of 0.1 mJy. We propose that IRAS 19520+2759 could be an example of the recent theoretical prediction of `bloated' or `swollen' star, i.e. a massive young stellar object whose radius has increased due to effects of accretion at a high-mass accretion rate.

  9. ANOMALOUSLY STEEP REDDENING LAW IN QUASARS: AN EXCEPTIONAL EXAMPLE OBSERVED IN IRAS 14026+4341

    Energy Technology Data Exchange (ETDEWEB)

    Jiang Peng; Zhou Hongyan; Ji Tuo; Shu Xinwen; Liu Wenjuan; Dong Xiaobo; Wang Huiyuan; Wang Tinggui [Key Laboratory for Research in Galaxies and Cosmology, University of Science and Technology of China, Chinese Academy of Sciences, Hefei, Anhui, 230026 (China); Wang Jianguo [National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, P.O. Box 110, Kunming, Yunnan 650011 (China); Bai Jinming, E-mail: jpaty@mail.ustc.edu.cn [Polar Research Institute of China, Jinqiao Road 451, Shanghai 200136 (China)

    2013-06-15

    A fraction of the heavily reddened quasars require a reddening curve that is even steeper than that of the Small Magellanic Cloud. In this paper, we thoroughly characterize the anomalously steep reddening law in quasars via an exceptional example observed in IRAS 14026+4341. By comparing the observed spectrum to the quasar composite spectrum, we derive a reddening curve in the rest-frame wavelength range of 1200-10000 A. It has a steep rise at wavelengths shorter than 3000 A, but no significant reddening at longer wavelengths. The absence of dust reddening in the optical continuum is confirmed by the normal broad-line Balmer decrement (the H{alpha}/H{beta} ratio) in IRAS 14026+4341. The anomalous reddening curve can be satisfactorily reproduced with a dust model containing silicate grains in a power-law size distribution, dn(a)/da{proportional_to}a {sup -1.4}, truncated at a maximum size of a{sub max} = 70 nm. The unusual size distribution may be caused by the destruction of large 'stardust' grains by quasar activities or a different dust formation mechanism (i.e., the in situ formation of dust grains in quasar outflows). It is also possible that the analogies of the dust grains observed near the Galactic center are responsible for the steep reddening curve. In addition, we find that IRAS 14026+4341 is a weak emission-line quasar (i.e., PHL 1811 analogies) with heavy dust reddening and blueshifted broad absorption lines.

  10. The Dense Molecular Gas and Nuclear Activity in the ULIRG IRAS 13120–5453

    Science.gov (United States)

    Privon, G. C.; Aalto, S.; Falstad, N.; Muller, S.; González-Alfonso, E.; Sliwa, K.; Treister, E.; Costagliola, F.; Armus, L.; Evans, A. S.; Garcia-Burillo, S.; Izumi, T.; Sakamoto, K.; van der Werf, P.; Chu, J. K.

    2017-02-01

    We present new Atacama Large Millimeter/submillimeter Array Band 7 (∼340 GHz) observations of the dense gas tracers HCN, HCO+, and CS in the local, single-nucleus, ultraluminous infrared galaxy IRAS 13120–5453. We find centrally enhanced HCN (4–3) emission, relative to HCO+ (4–3), but do not find evidence for radiative pumping of HCN. Considering the size of the starburst (0.5 kpc) and the estimated supernovae rate of ∼1.2 yr‑1, the high HCN/HCO+ ratio can be explained by an enhanced HCN abundance as a result of mechanical heating by the supernovae, though the active galactic nucleus and winds may also contribute additional mechanical heating. The starburst size implies a high ΣIR of 4.7 × 1012 L⊙ kpc‑2, slightly below predictions of radiation-pressure limited starbursts. The HCN line profile has low-level wings, which we tentatively interpret as evidence for outflowing dense molecular gas. However, the dense molecular outflow seen in the HCN line wings is unlikely to escape the Galaxy and is destined to return to the nucleus and fuel future star formation. We also present modeling of Herschel observations of the H2O lines and find a nuclear dust temperature of ∼40 K. IRAS 13120–5453 has a lower dust temperature and ΣIR than is inferred for the systems termed “compact obscured nuclei (CONs)” (such as Arp 220 and Mrk 231). If IRAS 13120–5453 has undergone a CON phase, we are likely witnessing it at a time when the feedback has already inflated the nuclear ISM and diluted star formation in the starburst/active galactic nucleus core.

  11. Eppur si muove: Positional and kinematic correlations of satellite pairs in the low Z universe

    CERN Document Server

    Ibata, Rodrigo A; Lewis, Geraint F; Ibata, Neil G; Martin, Nicolas

    2014-01-01

    We have recently shown (Ibata et al. 2014) that pairs of satellite galaxies located diametrically opposite each other around their host possess predominantly anti-correlated velocities. This is consistent with a scenario in which $\\sim 50$% of satellite galaxies belong to kinematically-coherent rotating planar structures, similar to those detected around the giant galaxies of the Local Group. Here we extend this analysis, examining the incidence of satellites of giant galaxies drawn from an SDSS photometric redshift catalog. We find that there is a $\\sim 17$% overabundance ($> 3 \\sigma$ significance) of candidate satellites at positions diametrically opposite a spectroscopically confirmed satellite. We show that cosmological simulations do not possess this property when the contamination is included, and that there are in fact, after subtracting contamination, 2 to 3 times more satellites diametrically opposed to a spectroscopically confirmed satellite than at $90\\deg$ from it. We also examine the correlation...

  12. Mechanism of sorption sulpho-derivative organic chelating agents on strong base anion exchanger Amberlite IRA-402 by FT-IR/PAS and DRS methods

    Science.gov (United States)

    Wronski, G.; Pasieczna-Patkowska, S.; Hubicki, Z.

    2008-02-01

    In the paper, strong base anion exchanger Amberlite IRA-402 was modified by using sulpho-derivative organic chelating agents as: Brilliant Yellow, Xylenol Orange, Bromophenyl Blue. The investigations exhibited, that anion exchanger Amberlite IRA-402 is modified very simply by organic chelating agents (working capacity 0.25 0.5 g/cm3).

  13. Investigating the nature of the Fried Egg nebula: CO mm-line and optical spectroscopy of IRAS 17163-3907

    CERN Document Server

    Wallström, Sofia H J; Lagadec, E; Black, J H; Oudmaijer, R D; Justtanont, K; van Winckel, H; Zijlstra, A A

    2015-01-01

    Through CO mm-line and optical spectroscopy, we investigate the properties of the Fried Egg nebula IRAS 17163-3907, which has recently been proposed to be one of the rare members of the yellow hypergiant class. The CO J=2-1 and J=3-2 emission arises from a region within 20" of the star and is clearly associated with the circumstellar material. The CO lines show a multi-component asymmetrical profile, and an unexpected velocity gradient is resolved in the east-west direction, suggesting a bipolar outflow. This is in contrast with the apparent symmetry of the dust envelope as observed in the infrared. The optical spectrum of IRAS 17163-3907 between 5100 and 9000 {\\AA} was compared with that of the archetypal yellow hypergiant IRC+10420 and was found to be very similar. These results build on previous evidence that IRAS 17163-3907 is a yellow hypergiant.

  14. High Velocity Precessing Jets from the Water Fountain IRAS 18286-0959 Revealed by VLBA Observations

    OpenAIRE

    Yung, Bosco; Nakashima, Jun-ichi; Imai, Hiroshi; Deguchi, Shuji; Diamond, Philip; Kwok, Sun

    2011-01-01

    We report the results of multi-epoch VLBA observations of the 22.2GHz water maser emission associated with the "water fountain" IRAS 18286-0959. We suggest that this object is the second example of a highly collimated bipolar precessing outflow traced by water maser emission, the other is W43A. The detected water emission peaks are distributed over a velocity range from -50km/s to 150km/s. The spatial distribution of over 70% of the identified maser features is found to be highly collimated a...

  15. Estudio de adsorción de boro con amberlite IRA 743

    OpenAIRE

    Marín Martínez, Alberto J.

    2011-01-01

    Este proyecto estudia los equilibrios y las cinéticas de adsorción de boro en forma de acido bórico en medio acuoso, mediante Amberlite IRA743, una resina de políestireno copolimerizado con divinilbenceno. Se realizan equilibrios a diferentes concentraciones para obtener una isoterma de adsorción y su ecuación corresponiente. Se hacen ensayos a distintas concentraciones de cinéticas de adsorción en batch y mediante balances de materia, la ecuación de equilibrio de la isoterma hayada y l...

  16. Medida de Estilos de Regulación Afectiva (MARS) ampliada en ira y tristeza

    OpenAIRE

    Páez Rovira, Darío; Martínez Sánchez, Francisco; Sevillano Triguero, Verónica; Mendiburo Seguel, Andrés; Campos, Miriam

    2012-01-01

    Se presenta una versión de la Measure of Affect Regulation Styles (MARS) ampliada, aplicada a episodios emocionales de ira y tristeza en una muestra de 355 estudiantes de licenciatura de Chile, España y México. El estudio examinó la asociación entre formas de regulación afectiva con la adaptación en estos episodios y con medidas disposicionales de afrontamiento, de regulación emocional y bienestar psicológico. Se confirmó que las estrategias de regulación emocional efectivas en cuanto a la me...

  17. 8- to 13-micron spectrophotometry of Comet IRAS-Araki-Alcock

    Science.gov (United States)

    Feierberg, M. A.; Witteborn, F. C.; Johnson, J. R.; Campins, H.

    1984-01-01

    Spectrophotometry between 8.0 and 13.0 microns at 2 percent spectral resolution is presented for areas in and near the nuclear condensation of Comet IRAS-Araki-Alcock (1983d) on May 11 and 12, 1983. All the spectra can be fit very well by blackbody curves, and no 10-micron silicate emissions are seen. The temperature structure of the coma suggests the presence of small (radii less than 5 microns) dust particles within 150 km of the nucleus and larger ones further out. The change in the spatial distribution of the infrared flux between the two nights suggests that an outburst may have occurred sometime on May 11.

  18. The 60-. mu. m and far-infrared luminosity functions of IRAS galaxies

    Energy Technology Data Exchange (ETDEWEB)

    Saunders, W.; Rowan-Robinson, M.; Lawrence, A. (Queen Mary Coll., London (UK). Astronomy Unit); Efstathiou, G. (Cambridge Univ. (UK). Inst. of Astronomy Oxford Univ. (UK). Dept. of Astrophysics); Kaiser, N. (Cambridge Univ. (UK). Inst. of Astronomy Canadian Inst. for Theoretical Astrophysics, Toronto, Ont. (Canada)); Ellis, R.S.; Frenk, C.S. (Durham Univ. (UK). Dept. of Physics)

    1990-01-15

    The 60-{mu}m luminosity function for galaxies detected by IRAS is determined from a compilation of samples with highly complete redshift information totalling 2818 galaxies, including the new QMC-Cambridge-Durham survey and samples including many nearby, low-luminosity galaxies. We use clustering-independent maximum likelihood methods throughout. A non-parametric estimator is used to determine the shape of the luminosity function, and the best parameter set found for a suitable analytic form. We find the luminosity function to be well described by a Gaussian dependence on log(luminosity), changing over to a very flat power law at low luminosities. (author).

  19. Set-up of a new TDCR counter at IRA-METAS.

    Science.gov (United States)

    Nedjadi, Youcef; Bailat, Claude; Caffari, Yvan; Cassette, Philippe; Bochud, François

    2015-03-01

    A triple-to-double coincidence ratio (TDCR) counter was recently constructed at IRA-METAS for liquid scintillation based primary activity standardisations. A description of its optical chamber, efficiency change tools, photomultiplier tubes (PMTs) and electronics is given. This TDCR system was validated by measuring several standard solutions of beta emitters including (45)Ca, (14)C, (63)Ni and (3)H. The activity concentrations, obtained from these measurements and efficiencies computed with a FORTRAN code we developed for symmetric and asymmetric PMTs, agree with the certified values within uncertainties.

  20. Detection of water masers in a sample of 84 IRAS sources

    Institute of Scientific and Technical Information of China (English)

    WU YueFang; ESIMBEK Jarken; WANG JunZhi; LIU Xiang; QIN ShengLi; ZHANG Jin

    2007-01-01

    Using a newly installed system on the 25 m telescope of Urumqi Observatory, we searched for H2O maser emission towards 84 IRAS sources including young stellar objects (YSOs) and candidates for OH/IR stars. Water masers were detected in four star formation regions and one envelope of late type of stars for the first time. New water maser components were measured in two sources. In a maser source with no water maser emission detected six years ago, strong maser emission was found at different velocities, showing that there was a new explosion of water maser in this source.

  1. Satellite-Based EMI Detection, Identification, and Mitigation

    Science.gov (United States)

    Stottler, R.; Bowman, C.

    2016-09-01

    Commanding, controlling, and maintaining the health of satellites requires a clear operating spectrum for communications. Electro Magnetic Interference (EMI) from other satellites can interfere with these communications. Determining which satellite is at fault improves space situational awareness and can be used to avoid the problem in the future. The Rfi detection And Prediction Tool, Optimizing Resources (RAPTOR) monitors the satellite communication antenna signals to detect EMI (also called RFI for Radio Frequency Interference) using a neural network trained on past cases of both normal communications and EMI events. RAPTOR maintains a database of satellites that have violated the reserved spectrum in the past. When satellite-based EMI is detected, RAPTOR first checks this list to determine if any are angularly close to the satellite being communicated with. Additionally, RAPTOR checks the Space Catalog to see if any of its active satellites are angularly close. RAPTOR also consults on-line databases to determine if the described operating frequencies of the satellites match the detected EMI and recommends candidates to be added to the known offenders database, accordingly. Based on detected EMI and predicted orbits and frequencies, RAPTOR automatically reschedules satellite communications to avoid current and future satellite-based EMI. It also includes an intuitive display for a global network of satellite communications antennas and their statuses including the status of their EM spectrum. RAPTOR has been prototyped and tested with real data (amplitudes versus frequency over time) for both satellite communication signals and is currently undergoing full-scale development. This paper describes the RAPTOR technologies and results of testing.

  2. VizieR Online Data Catalog: SKY2000 Master Catalog, Version 5 (Myers+ 2006)

    Science.gov (United States)

    Myers, J. R.; Sande, C. B.; Miller, A. C.; Warren, W. H., Jr.; Tracewell, D. A.

    2015-02-01

    The SKYMAP Star Catalog System consists of a Master Catalog stellar database and a collection of utility software designed to create and maintain the database and to generate derivative mission star catalogs (run catalogs). It contains an extensive compilation of information on almost 300000 stars brighter than 8.0mag. The original SKYMAP Master Catalog was generated in the early 1970's. Incremental updates and corrections were made over the following years but the first complete revision of the source data occurred with Version 4.0. This revision also produced a unique, consolidated source of astrometric information which can be used by the astronomical community. The derived quantities were removed and wideband and photometric data in the R (red) and I (infrared) systems were added. Version 4 of the SKY2000 Master Catalog was completed in April 2002; it marks the global replacement of the variability identifier and variability data fields. More details can be found in the description file sky2kv4.pdf. The SKY2000 Version 5 Revision 4 Master Catalog differs from Revision 3 in that MK and HD spectral types have been added from the Catalogue of Stellar Spectral Classifications (B. A. Skiff of Lowell Observatory, 2005), which has been assigned source code 50 in this process. 9622 entries now have MK types from this source, while 3976 entries have HD types from this source. SKY2000 V5 R4 also differs globally from preceding MC versions in that the Galactic coordinate computations performed by UPDATE have been increased in accuracy, so that differences from the same quantities from other sources are now typically in the last decimal places carried in the MC. This version supersedes the previous versions 1(V/95), 2(V/102), 3(V/105) and 4(V/109). (6 data files).

  3. Digitization and Position Measurement of Astronomical Plates of Saturnian Satellites

    Science.gov (United States)

    Yan, D.; Yu, Y.; Zhang, H. Y.; Qiao, R. C.

    2014-05-01

    Using the advanced commercial scanners to digitize astronomical plates may be a simple and effective way. In this paper, we discuss the method of digitizing and astrometrically reducing six astronomical plates of Saturnian satellites, which were taken from the 1 m RCC (Ritchey Chretien Coude) telescope of Yunnan Observatory in 1988, by using the 10000XL scanner of Epson. The digitized images of the astronomical plates of Saturnian satellites are re-reduced, and the positions of Saturnian satellites based on the UCAC2 (The Second US Naval Observatory CCD Astrograph Catalog) catalogue are given. A comparison of our measured positions with the IMCCE (Institut de Mecanique Celeste et de Calcul des Ephemerides) ephemeris of Saturnian satellites shows the high quality of our measurements, which have an accuracy of 106 mas in right ascension and 89 mas in declination. Moreover, our measurements appear to be consistent with this ephemeris within only about 56 mas in right ascension and 9 mas in declination.

  4. Towards a Comprehensive Catalog of Volcanic Seismicity

    Science.gov (United States)

    Thompson, G.

    2014-12-01

    Catalogs of earthquakes located using differential travel-time techniques are a core product of volcano observatories, and while vital, they represent an incomplete perspective of volcanic seismicity. Many (often most) earthquakes are too small to locate accurately, and are omitted from available catalogs. Low frequency events, tremor and signals related to rockfalls, pyroclastic flows and lahars are not systematically catalogued, and yet from a hazard management perspective are exceedingly important. Because STA/LTA detection schemes break down in the presence of high amplitude tremor, swarms or dome collapses, catalogs may suggest low seismicity when seismicity peaks. We propose to develop a workflow and underlying software toolbox that can be applied to near-real-time and offline waveform data to produce comprehensive catalogs of volcanic seismicity. Existing tools to detect and locate phaseless signals will be adapted to fit within this framework. For this proof of concept the toolbox will be developed in MATLAB, extending the existing GISMO toolbox (an object-oriented MATLAB toolbox for seismic data analysis). Existing database schemas such as the CSS 3.0 will need to be extended to describe this wider range of volcano-seismic signals. WOVOdat may already incorporate many of the additional tables needed. Thus our framework may act as an interface between volcano observatories (or campaign-style research projects) and WOVOdat. We aim to take the further step of reducing volcano-seismic catalogs to sets of continuous metrics that are useful for recognizing data trends, and for feeding alarm systems and forecasting techniques. Previous experience has shown that frequency index, peak frequency, mean frequency, mean event rate, median event rate, and cumulative magnitude (or energy) are potentially useful metrics to generate for all catalogs at a 1-minute sample rate (directly comparable with RSAM and similar metrics derived from continuous data). Our framework

  5. Trigonometric distance and proper motion of IRAS 20056+3350: a massive star-forming region on the solar circle

    Energy Technology Data Exchange (ETDEWEB)

    Burns, Ross A.; Handa, Toshihiro; Omodaka, Toshihiro; Nakagawa, Akiharu; Nakanishi, Hiroyuki [Graduate School of Science and Engineering, Kagoshima University, 1-21-35 Kôrimoto, Kagoshima, Kagoshima 890-0065 (Japan); Nagayama, Takumi [Mizusawa VLBI Observatory, National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588 (Japan); Hayashi, Masahiko [National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588 (Japan); Shizugami, Makoto, E-mail: RossBurns88@MilkyWay.sci.Kagoshima-u.ac.jp [Mizusawa VLBI Observatory, National Astronomical Observatory of Japan, 2-12 Hoshi-ga-oka, Mizusawa-ku, Oshu, Iwate 023-0861 (Japan)

    2014-12-10

    We report our measurement of the trigonometric distance and proper motion of IRAS 20056+3350, obtained from the annual parallax of H{sub 2}O masers. Our distance of D=4.69{sub −0.51}{sup +0.65} kpc, which is 2.8 times larger than the near kinematic distance adopted in the literature, places IRAS 20056+3350 at the leading tip of the Local arm and proximal to the solar circle. Using our distance, we reevaluate past observations to reveal IRAS 20056+3350 as a site of massive star formation at a young stage of evolution. This result is consistent with the spectral energy distribution of the source evaluated with published photometric data from UKIDSS, WISE, AKARI, IRAS, and the submillimeter continuum. Both analytical approaches reveal the luminosity of the region to be 2.4 × 10{sup 4} L {sub ☉}, and suggest that IRAS 20056+3350 is forming an embedded star of ≥16 M {sub ☉}. We estimated the proper motion of IRAS 20056+3350 to be (μ{sub α}cos δ, μ{sub δ}) = (–2.62 ± 0.33, –5.65 ± 0.52) mas yr{sup –1} from the group motion of H{sub 2}O masers, and use our results to estimate the angular velocity of Galactic rotation at the Galactocentric distance of the Sun, Ω{sub 0} = 29.75 ± 2.29 km s{sup –1} kpc{sup –1}, which is consistent with the values obtained for other tangent point and solar circle objects.

  6. VizieR Online Data Catalog: URAT Parallax Catalog (UPC) (Finch+, 2016)

    Science.gov (United States)

    Finch, C. T.; Zacharias, N.

    2016-04-01

    The URAT Parallax Catalog (UPC) consists of 112177 parallaxes. The catalog utilizes all Northern Hemisphere epoch data from the United States Naval Observatory (USNO) Robotic Astrometric Telescope (URAT). This data includes all individual exposures from April 2012 to June 2015 giving a larger epoch baseline for determining parallaxes over the 2-year span of the First USNO Robotic Astrometric Telescope Catalog (URAT1) (Zacharias et al., 2015, Cat. I/329) published data. The URAT parallax pipeline is custom code that utilizes routines from (Jao, C.-W., 2004, PhD thesis Georgia Stat), the JPL DE405 ephemeris and Green's parallax factor (Green, R.M., 1985, Spherical Astronomy) for determining parallaxes from a weighted least-squares reduction. The relative parallaxes have been corrected to absolute by using the distance color relation described in (Finch et. al, 2014, Cat. J/AJ/148/119) to determine a mean distance of all UCAC4 reference stars (R=8-16 mag) used in the astrometric reductions. Presented here are all significant parallaxes from the URAT Northern Hemisphere epoch data comprising of 2 groups: a) URAT parallax results for stars with prior published parallax, and b) first time trigonometric parallaxes as obtained from URAT data of stars without prior published parallax. Note, more stringent selection criteria have been applied to the second group than the first in order to keep the rate of false detections low. For specific information about the astrometric reductions please see 'The First U.S. Naval Observatory Robotic Astrometric Telescope Catalog' published paper (Zacharias et al., 2015AJ....150..101Z, Cat. I/329). For complete details regarding the parallax pipeline please see 'Parallax Results From URAT Epoch Data' (Finch and Zacharias, 2016, AJ, in press). This catalog gives all positions on the ICRS at Epoch J2014.0; it covers the magnitude range 6.56 to 16.93 in the URAT band-pass, with an average parallax precision of 4.3mas for stars having no known

  7. THE COORDINATED RADIO AND INFRARED SURVEY FOR HIGH-MASS STAR FORMATION. II. SOURCE CATALOG

    Energy Technology Data Exchange (ETDEWEB)

    Purcell, C. R.; Hoare, M. G.; Lumsden, S. L.; Urquhart, J. S. [School of Physics and Astronomy, E.C. Stoner Building, University of Leeds, Leeds LS2 9JT (United Kingdom); Cotton, W. D. [National Radio Astronomy Observatory, 520 Edgemont Road, Charlottesville, VA 22903-2475 (United States); Chandler, C. [National Radio Astronomy Observatory, Array Operations Center, P.O. Box O, 1003 Lopezville Road, Socorro, NM 87801-0387 (United States); Churchwell, E. B. [The University of Wisconsin, Department of Astronomy, 475 North Charter Street, Madison, WI 53706 (United States); Diamond, P.; Fuller, G.; Garrington, S. T. [Jodrell Bank Centre for Astrophysics, The Alan Turing Building, School of Physics and Astronomy, The University of Manchester, Oxford Rd, Manchester, M13 9PL (United Kingdom); Dougherty, S. M. [National Research Council of Canada, Herzberg Institute for Astrophysics, Dominion Radio Astrophysical Observatory, P.O. Box 248, Penticton, British Columbia V2A 6J9 (Canada); Fender, R. P. [School of Physics and Astronomy, University of Southampton, Southampton SO17 1BJ (United Kingdom); Gledhill, T. M. [Science and Technology Research Institute, University of Hertfordshire, College Lane, Hatfield AL10 9AB (United Kingdom); Goldsmith, P. F. [Jet Propulsion Laboratory, 4800 Oak Grove Drive, Pasadena, CA 91109 (United States); Hindson, L. [CSIRO Astronomy and Space Science, P.O. Box 76, Epping, NSW 1710 (Australia); Jackson, J. M. [Astronomy Department, Boston University, 725 Commonwealth Avenue, Boston, MA 02215 (United States); Kurtz, S. E. [Centro de Radioastronomia y Astrofisica, Universidad Nacional Autonoma de Mexico - Morelia, Apartado Postal 3-72, C.P. 58090 Morelia, Michoacan (Mexico); Marti, J., E-mail: C.R.Purcell@leeds.ac.uk [Departamento de Fisica, EPSJ, Universidad de Jaen, Campus Las Lagunillas s/n, Edif. A3, E-23071 Jaen (Spain); and others

    2013-03-01

    The CORNISH project is the highest resolution radio continuum survey of the Galactic plane to date. It is the 5 GHz radio continuum part of a series of multi-wavelength surveys that focus on the northern GLIMPSE region (10 Degree-Sign < l < 65 Degree-Sign ), observed by the Spitzer satellite in the mid-infrared. Observations with the Very Large Array in B and BnA configurations have yielded a 1.''5 resolution Stokes I map with a root mean square noise level better than 0.4 mJy beam{sup -1}. Here we describe the data-processing methods and data characteristics, and present a new, uniform catalog of compact radio emission. This includes an implementation of automatic deconvolution that provides much more reliable imaging than standard CLEANing. A rigorous investigation of the noise characteristics and reliability of source detection has been carried out. We show that the survey is optimized to detect emission on size scales up to 14'' and for unresolved sources the catalog is more than 90% complete at a flux density of 3.9 mJy. We have detected 3062 sources above a 7{sigma} detection limit and present their ensemble properties. The catalog is highly reliable away from regions containing poorly sampled extended emission, which comprise less than 2% of the survey area. Imaging problems have been mitigated by down-weighting the shortest spacings and potential artifacts flagged via a rigorous manual inspection with reference to the Spitzer infrared data. We present images of the most common source types found: H II regions, planetary nebulae, and radio galaxies. The CORNISH data and catalog are available online at http://cornish.leeds.ac.uk.

  8. A Cosmic Void Catalog of SDSS DR12 BOSS Galaxies

    Science.gov (United States)

    Mao, Qingqing; Berlind, Andreas A.; Scherrer, Robert J.; Neyrinck, Mark C.; Scoccimarro, Román; Tinker, Jeremy L.; McBride, Cameron K.; Schneider, Donald P.; Pan, Kaike; Bizyaev, Dmitry; Malanushenko, Elena; Malanushenko, Viktor

    2017-02-01

    We present a cosmic void catalog using the large-scale structure galaxy catalog from the Baryon Oscillation Spectroscopic Survey (BOSS). This galaxy catalog is part of the Sloan Digital Sky Survey (SDSS) Data Release 12 and is the final catalog of SDSS-III. We take into account the survey boundaries, masks, and angular and radial selection functions, and apply the ZOBOV void finding algorithm to the Galaxy catalog. We identify a total of 10,643 voids. After making quality cuts to ensure that the voids represent real underdense regions, we obtain 1,228 voids with effective radii spanning the range 20–100 {h}-1 {Mpc} and with central densities that are, on average, 30% of the mean sample density. We release versions of the catalogs both with and without quality cuts. We discuss the basic statistics of voids, such as their size and redshift distributions, and measure the radial density profile of the voids via a stacking technique. In addition, we construct mock void catalogs from 1000 mock galaxy catalogs, and find that the properties of BOSS voids are in good agreement with those in the mock catalogs. We compare the stellar mass distribution of galaxies living inside and outside of the voids, and find no large difference. These BOSS and mock void catalogs are useful for a number of cosmological and galaxy environment studies.

  9. MEDICIÓN DE LA IRA EN EL DEPORTE DE COMBATE: VALIDACIÓN DEL STAXI-2 EN DEPORTISTAS MEXICANOS

    OpenAIRE

    Felix Jesús Oliva Mendoza; Nazira Calleja Bello

    2010-01-01

    La ira es una emoción que juega un papel fundamental en la ejecución de los deportes de combate. El propósito del presente estudio fue desarrollar una versión para deportistas de combate del Inventario de Expresión de la Ira Estado- Rasgo, STAXI-2, versión española. La muestra estuvo conformada por 303 deportistas que formaban parte de las selecciones nacionales mexicanas de cinco deportes de combate. Los resultados mostraron una estructura factorial similar a la versión española, que reporta...

  10. Using the DIRBE/IRAS All-Sky Reddening Map To Select Low-Reddening Windows Near the Galactic Plane

    CERN Document Server

    Stanek, K Z

    1998-01-01

    Recently Schlegel, Finkbeiner & Davis published an all-sky reddening map based on the COBE/DIRBE and IRAS/ISSA infrared sky surveys. Using the reddening map of Baade's Window and sample of 19 low-latitude ($|b|<5\\deg$) Galactic globular clusters I find that the DIRBE/IRAS reddening map overestimates $E(B-V)$ at low galactic latitudes by a factor of $\\sim 1.35$. I also demonstrate the usefulness of this high resolution map for selecting low-reddening windows near the Galactic plane.

  11. VizieR Online Data Catalog: GUViCS. Ultraviolet Source Catalogs (Voyer+, 2014)

    Science.gov (United States)

    Voyer, E. N.; Boselli, A.; Boissier, S.; Heinis, S.; Cortese, L.; Ferrarese, L.; Cote, P.; Cuillandre, J.-C.; Gwyn, S. D. J.; Peng, E. W.; Zhang, H.; Liu, C.

    2014-07-01

    These catalogs are based on GALEX NUV and FUV source detections in and behind the Virgo Cluster. The detections are split into catalogs of extended sources and point-like sources. The UV Virgo Cluster Extended Source catalog (UV_VES.fit) provides the deepest and most extensive UV photometric data of extended galaxies in Virgo to date. If certain data is not available for a given source then a null value is entered (e.g. -999, -99). UV point-like sources are matched with SDSS, NGVS, and NED and the relevant photometry and further data from these databases/catalogs are provided in this compilation of catalogs. The primary GUViCS UV Virgo Cluster Point-Like Source catalog is UV_VPS.fit. This catalog provides the most useful GALEX pipeline NUV and FUV photometric parameters, and categorizes sources as stars, Virgo members, and background sources, when possible. It also provides identifiers for optical matches in the SDSS and NED, and indicates if a match exists in the NGVS, only if GUViCS-optical matches are one-to-one. NED spectroscopic redshifts are also listed for GUViCS-NED one-to-one matches. If certain data is not available for a given source a null value is entered. Additionally, the catalog is useful for quick access to optical data on one-to-one GUViCS-SDSS matches.The only parameter available in the catalog for UV sources that have multiple SDSS matches is the total number of multiple matches, i.e. SDSSNUMMTCHS. Multiple GUViCS sources matched to the same SDSS source are also flagged given a total number of matches, SDSSNUMMTCHS, of one. All other fields for multiple matches are set to a null value of -99. In order to obtain full optical SDSS data for multiply matched UV sources in both scenarios, the user can cross-correlate the GUViCS ID of the sources of interest with the full GUViCS-SDSS matched catalog in GUV_SDSS.fit. The GUViCS-SDSS matched catalog, GUV_SDSS.fit, provides the most relevant SDSS data on all GUViCS-SDSS matches, including one

  12. VizieR Online Data Catalog: Catalog of Earth-Like Exoplanet Survey Targets (Chandler+, 2016)

    Science.gov (United States)

    Chandler, C. O.; McDonald, I.; Kane, S. R.

    2016-07-01

    We present the Catalog of Earth-Like Exoplanet Survey Targets (CELESTA), a database of habitable zones around 37000 nearby stars. The first step in creating CELESTA was assembling the input data. The Revised Hipparcos Catalog (van Leeuwen 2007, Cat. I/311) is a stellar catalog based on the original Hipparcos mission (Perryman et al. 1997, Cat. I/239) data set. Hipparcos, launched in 1989, recorded with great precision the parallax of nearby stars, ultimately leading to a database of 118218 stars. McDonald et al. 2012 (cat. J/MNRAS/427/343) calculated effective temperatures and luminosities for the Hipparcos stars. The next step was selecting appropriate stars for the construction of CELESTA. The Stellar Parameter Catalog of 103663 stars included many stars that were not suitable for our purposes, especially stars off the Main-Sequence (MS) branch, e.g., giants. Please refer to Section 3.2 in the paper for additional details about the star selection. The final CELESTA catalog contains 37354 stars (see Table2), each with a set of associated attributes, e.g., estimated mass, measured distance. The complete database can also be found online at a dedicated host (http://www.celesta.info/). (2 data files).

  13. Probabilistic Catalogs for Crowded Stellar Fields

    CERN Document Server

    Brewer, Brendon J; Hogg, David W

    2012-01-01

    We introduce a probabilistic (Bayesian) method for producing catalogs from images of crowded stellar fields. The method is capable of inferring the number of sources (N) in the image and can also handle the challenges introduced by overlapping sources. The luminosity function of the stars can also be inferred even when the precise luminosity of each star is uncertain. This is in contrast with standard techniques which produce a single catalog, potentially underestimating the uncertainties in any study of the stellar population and discarding information about sources at or below the detection limit. The method is implemented using advanced Markov Chain Monte Carlo (MCMC) techniques including Reversible Jump and Nested Sampling. The computational feasibility of the method is demonstrated on simulated data where the luminosity function of the stars is a broken power-law. The parameters of the luminosity function can be recovered with moderate uncertainties. We compare the results obtained from our method with t...

  14. Efficient Catalog Matching with Dropout Detection

    CERN Document Server

    Fan, Dongwei; Szalay, Alexander S; Cui, Chenzhou; Zhao, Yongheng

    2014-01-01

    Not only source catalogs are extracted from astronomy observations. Their sky coverage is always carefully recorded and used in statistical analyses, such as correlation and luminosity function studies. Here we present a novel method for catalog matching, which inherently builds on the coverage information for better performance and completeness. A modified version of the Zones Algorithm is introduced for matching partially overlapping observations, where irrelevant parts of the data are excluded up front for efficiency. Our design enables searches to focus on specific areas on the sky to further speed up the process. Another important advantage of the new method over traditional techniques is its ability to quickly detect dropouts, i.e., the missing components that are in the observed regions of the celestial sphere but did not reach the detection limit in some observations. These often provide invaluable insight into the spectral energy distribution of the matched sources but rarely available in traditional...

  15. Catalog of the Neotropical Trichoptera (Caddisflies).

    Science.gov (United States)

    Holzenthal, Ralph W; Calor, Adolfo R

    2017-01-01

    The Neotropical caddisfly (Trichoptera) fauna is cataloged from a review of over 1,000 literature citations through 2015 (partial 2016) to include 3,262 currently recognized, valid species-group names in 25 families and 155 extant genera. Fourteen subspecies are included in the total as well as 35 fossil species and 1 fossil genus. The region covered includes all of Mexico, Central America, the Caribbean, and South America. Genus-group and species-group synonyms are listed. For each nominal species, information on the type locality, type depository, sex of type, distribution by country, and other pertinent taxonomic or biological information is included. Summary information on taxonomy, phylogeny, distribution, immature stages, and biology are provided for each family and genus where known. An extensive index to all nominal taxa is included to facilitate use of the catalog. The glossosomatid species Mexitrichia usseglioi Rueda Martín & Gibon, is transferred to Mortoniellacomb. n.

  16. Catalog of the Neotropical Trichoptera (Caddisflies)

    Science.gov (United States)

    Holzenthal, Ralph W.; Calor, Adolfo R.

    2017-01-01

    Abstract The Neotropical caddisfly (Trichoptera) fauna is cataloged from a review of over 1,000 literature citations through 2015 (partial 2016) to include 3,262 currently recognized, valid species-group names in 25 families and 155 extant genera. Fourteen subspecies are included in the total as well as 35 fossil species and 1 fossil genus. The region covered includes all of Mexico, Central America, the Caribbean, and South America. Genus-group and species-group synonyms are listed. For each nominal species, information on the type locality, type depository, sex of type, distribution by country, and other pertinent taxonomic or biological information is included. Summary information on taxonomy, phylogeny, distribution, immature stages, and biology are provided for each family and genus where known. An extensive index to all nominal taxa is included to facilitate use of the catalog. The glossosomatid species Mexitrichia usseglioi Rueda Martín & Gibon, is transferred to Mortoniella comb. n. PMID:28331396

  17. 41 CFR 101-30.101-10 - GSA section of the Federal Supply Catalog.

    Science.gov (United States)

    2010-07-01

    ... Federal Supply Catalog. 101-30.101-10 Section 101-30.101-10 Public Contracts and Property Management... PROCUREMENT 30-FEDERAL CATALOG SYSTEM 30.1-General § 101-30.101-10 GSA section of the Federal Supply Catalog. GSA section of the Federal Supply Catalog means a series of supply catalogs issued by GSA as...

  18. Globules and pillars in Cygnus X. II. Massive star formation in the globule IRAS 20319+3958

    Science.gov (United States)

    Djupvik, A. A.; Comerón, F.; Schneider, N.

    2017-02-01

    Globules and pillars, impressively revealed by the Spitzer and Herschel satellites, for example, are pervasive features found in regions of massive star formation. Studying their embedded stellar populations can provide an excellent laboratory to test theories of triggered star formation and the features that it may imprint on the stellar aggregates resulting from it. We studied the globule IRAS 20319+3958 in Cygnus X by means of visible and near-infrared imaging and spectroscopy, complemented with mid-infrared Spitzer/IRAC imaging, in order to obtain a census of its stellar content and the nature of its embedded sources. Our observations show that the globule contains an embedded aggregate of about 30 very young (≲1 Myr) stellar objects, for which we estimate a total mass of 90 M⊙. The most massive members are three systems containing early B-type stars. Two of them most likely produced very compact H II regions, one of them being still highly embedded and coinciding with a peak seen in emission lines characterising the photon dominated region (PDR). Two of these three systems are resolved binaries, and one of those contains a visible Herbig Be star. An approximate derivation of the mass function of the members of the aggregate gives hints of a slope at high masses shallower than the classical Salpeter slope, and a peak of the mass distribution at a mass higher than that at which the widely adopted log-normal initial mass function peaks. The emission distribution of H2 and Brγ, tracing the PDR and the ionised gas phase, respectively, suggests that molecular gas is distributed as a shell around the embedded aggregate, filled with centrally-condensed ionised gas. Both, the morphology and the low excitation of the H II region, indicate that the sources of ionisation are the B stars of the embedded aggregate, rather than the external UV field caused by the O stars of Cygnus OB2. The youth of the embedded cluster, combined with the isolation of the globule

  19. Catalog of data bases and reports

    Energy Technology Data Exchange (ETDEWEB)

    Burtis, M.D. [comp.

    1992-04-01

    The Catalog of Data Bases and Reports provides information about the many reports and other materials made available by the US Department of Energy`s Global Change Research Program (GCRP). It is divided into six sections plus an author and a title index: (1) Research plans and budget summaries (2) technical reports; (3) workshops, proceedings, and reports; (4) other reports; (5) USDA reports on response of vegetation to carbon dioxide; and, (6) numeric data packages and computer model packages.

  20. Catalog of data bases and reports

    Energy Technology Data Exchange (ETDEWEB)

    Burtis, M.D. (comp.)

    1992-04-01

    The Catalog of Data Bases and Reports provides information about the many reports and other materials made available by the US Department of Energy's Global Change Research Program (GCRP). It is divided into six sections plus an author and a title index: (1) Research plans and budget summaries (2) technical reports; (3) workshops, proceedings, and reports; (4) other reports; (5) USDA reports on response of vegetation to carbon dioxide; and, (6) numeric data packages and computer model packages.

  1. HIS Central and the Hydrologic Metadata Catalog

    Science.gov (United States)

    Whitenack, T.; Zaslavsky, I.; Valentine, D. W.

    2008-12-01

    The CUAHSI Hydrologic Information System project maintains a comprehensive workflow for publishing hydrologic observations data and registering them to the common Hydrologic Metadata Catalog. Once the data are loaded into a database instance conformant with the CUAHSI HIS Observations Data Model (ODM), the user configures ODM web service template to point to the new database. After this, the hydrologic data become available via the standard CUAHSI HIS web service interface, that includes both data discovery (GetSites, GetVariables, GetSiteInfo, GetVariableInfo) and data retrieval (GetValues) methods. The observations data then can be further exposed via the global semantics-based search engine called Hydroseek. To register the published observations networks to the global search engine, users can now use the HIS Central application (new in HIS 1.1). With this online application, the WaterML-compliant web services can be submitted to the online catalog of data services, along with network metadata and a desired network symbology. Registering services to the HIS Central application triggers a harvester which uses the services to retrieve additional network metadata from the underlying ODM (information about stations, variables, and periods of record). The next step in HIS Central application is mapping variable names from the newly registered network, to the terms used in the global search ontology. Once these steps are completed, the new observations network is added to the map and becomes available for searching and querying. The number of observations network registered to the Hydrologic Metadata Catalog at SDSC is constantly growing. At the time of submission, the catalog contains 51 registered networks, with estimated 1.7 million stations.

  2. The BMW-Chandra Serendipitous Source Catalog

    Science.gov (United States)

    Romano, P.; Campana, S.; Mignani, R. P.; Moretti, A.; Mottini, M.; Panzera, M. R.; Tagliaferri, G.

    2004-08-01

    We present the BMW-Chandra source catalog drawn from all Chandra ACIS-I pointed observations with an exposure time in excess of 10 ks public as of March 2003 (136 observations). Using the wavelet detection algorithm developed by Lazzati et al. (1999) and Campana et al. (1999), which can characterize point-like as well as extended sources, we identified 21325 sources. Among them, 16758 are serendipitous, i.e. not associated with the targets of the pointings, and do not require a non-automated analysis. This makes our catalog the largest compilation of Chandra sources to date. The 0.5--10 keV absorption corrected fluxes of these sources range from ˜ 3× 10-16 to 9×10-12 erg cm-2 s-1 with a median of 7× 10-15 erg cm-2 s-1. The catalog consists of count rates and relative errors in three energy bands (total, 0.5--7 keV; soft, 0.5--2 keV; and hard band, 2--7 keV), and source positions relative to the highest signal-to-noise detection among the three bands. The wavelet algorithm also provides an estimate of the extension of the source which we refined with a σ -clipping method. We report on the main properties of the sources in our catalog, such as sky coverage ( ˜ 8 deg2 at a limiting flux of ˜ 10-13 erg cm-2 s-1) and cosmological log N--log S for a subset at high Galactic latitude (∣ b ∣ > 20o) for a flux as low as ˜ 1.5 × 10-15 erg cm-2 s-1. Support for this work was provided by the Italian MIUR.

  3. A Compton-thick active galactic nucleus powering the hyperluminous infrared galaxy IRAS 00182-7112

    Science.gov (United States)

    Nandra, K.; Iwasawa, K.

    2007-11-01

    We present X-ray observations of the hyperluminous infrared galaxy (HLIRG) IRAS 00182- 7112 obtained using the XMM-Newton EPIC camera. A luminous hard X-ray source coincident with the nucleus is revealed, along with weaker soft X-ray emission which may be extended or offset from the hard emission. The EPIC spectrum is extremely flat and shows Fe Kα emission with very high equivalent width: both are typical characteristics of a buried, Compton-thick active galactic nucleus (AGN) which is seen only in scattered light. Perhaps the most remarkable characteristic of the spectrum is that the Fe Kα line energy is that of He-like iron, making IRAS 00182-7112 the first hidden AGN known to be dominated by ionized, Compton-thick reflection. Taking an appropriate bolometric correction, we find that this AGN could easily dominate the far-infrared (FIR) energetics. The nuclear reflection spectrum is seen through a relatively cold absorber with column density consistent with recent Spitzer observations. The soft X-ray emission, which may be thermal in nature and associated with star-forming activity, is seen unabsorbed. The soft X-rays and weak polycyclic aromatic hydrocarbon features both give estimates of the star formation rate ~300Msolar yr-1, insufficient to power the FIR emission and supportive of the idea that this HLIRG is AGN-dominated.

  4. High-resolution Observations of the Massive Protostar in IRAS 18566+0408

    Science.gov (United States)

    Hofner, P.; Cesaroni, R.; Kurtz, S.; Rosero, V.; Anderson, C.; Furuya, R. S.; Araya, E. D.; Molinari, S.

    2017-07-01

    We report 3 mm continuum, CH3CN(5-4) and 13CS(2-1) line observations with CARMA (Combined Array for Research in Millimeter-wave Astronomy), in conjunction with 6 and 1.3 cm continuum VLA data, and 12 and 25 μm broadband data from the Subaru Telescope toward the massive proto-star IRAS 18566+0408. The VLA data resolve the ionized jet into four components aligned in the E-W direction. Radio components A, C, and D have flat centimeter SEDs indicative of optically thin emission from ionized gas, and component B has a spectral index α = 1.0, and a decreasing size with frequency \\propto {ν }-0.5. Emission from the CARMA 3 mm continuum and from the 13CS(2-1) and CH3CN(5-4) spectral lines is compact (i.e., archival data for IRAS 18566+0408, which show extended K-band emission along the jet direction. We detect an E-W velocity shift of about 10 km s-1 over the HMC in the CH3CN lines possibly tracing the interface of the ionized jet with the surrounding core gas. Our data demonstrate the presence of an ionized jet at the base of the molecular outflow and support the hypothesis that massive protostars with O-type luminosity form with a mechanism similar to lower mass stars.

  5. Not a galaxy: IRAS 04186+5143, a new young stellar cluster in the outer Galaxy

    CERN Document Server

    Yun, J L; Djupvik, A A; Torrelles, J M; Molinari, S

    2015-01-01

    We report the discovery of a new young stellar cluster in the outer Galaxy located at the position of an IRAS PSC source that has been previously mis-identified as an external galaxy. The cluster is seen in our near-infrared imaging towards IRAS 04186+5143 and in archive Spitzer images confirming the young stellar nature of the sources detected. There is also evidence of sub-clustering seen in the spatial distributions of young stars and of gas and dust. Near- and mid-infrared photometry indicates that the stars exhibit colours compatible with reddening by interstellar and circumstellar dust and are likely to be low- and intermediate-mass YSOs with a large proportion of Class I YSOs. Ammonia and CO lines were detected, with the CO emission well centred near the position of the richest part of the cluster. The velocity of the CO and NH$_3$ lines indicates that the gas is Galactic and located at a distance of about 5.5 kpc, in the outer Galaxy. Herschel data of this region characterise the dust environment of t...

  6. The Seyfert II Nature of the IRAS Source FSC10214+4724

    Science.gov (United States)

    Eisenhardt, P.; Elston, R.; McCarthy, P.; Dickinson, M.; Spinrad, H.; Jannuzi, B.; Maloney, P.

    1993-05-01

    We (Elston et al. 1993) have observed the rest frame optical and UV spectra of the luminous, high redshift IRAS galaxy FSC10214+4724. We find the [NII]/Hα and [OIII]/Hβ emission line ratios to be typical of those found in Seyfert II galaxies. The large Hα /Hβ ratio suggests substantial reddening of the narrow line region. The rest-frame optical emission is unpolarized (P=2.6+/-3.0%). These properties are very similar to those of the infrared luminous galaxies found at lower redshift, suggesting that FSC10214+4724 is the luminous extreme of the same population. A deep 1.6microns image of the field shows FSC10214+4724 to be unresolved with two nearby companions and several other faint objects within 10('') of the point source. These could be a a foreground group of galaxies or galaxies physically associated with FSC10214+4724. This aggregate of objects may have contributed some of the far-infrared flux detected within the large beam of IRAS. If there is a foreground group gravitational lensing may contribute to the large luminosity of FSC10214+4724.

  7. Anatomy of the internal bow shocks in the IRAS 04166+2706 protostellar jet

    CERN Document Server

    Tafalla, M; Shang, H; Johnstone, D; Zhang, Q; Santiago-Garcia, J; Lee, C -F; Hirano, N; Wang, L -Y

    2016-01-01

    $Aims.$ We study the relation between the jet and the outflow in the IRAS 04166+2706 protostar. This Taurus protostar drives a molecular jet that contains multiple emission peaks symmetrically located from the central source. The protostar also drives a wide-angle outflow consisting of two conical shells. $Methods.$ We have used the Atacama Large Millimeter/submillimeter Array (ALMA) interferometer to observe two fields along the IRAS 04166+2706 jet. The fields were centered on a pair of emission peaks that correspond to the same ejection event, and were observed in CO(2-1), SiO(5-4), and SO(65-54). $ Results.$ Both ALMA fields present spatial distributions that are approximately elliptical and have their minor axes aligned with the jet direction. As the velocity increases, the emission in each field moves gradually across the elliptical region. This systematic pattern indicates that the emitting gas in each field lies in a disk-like structure that is perpendicular to the jet axis and is expanding away from t...

  8. Low-mass protostars and dense cores in different evolutionary stages in IRAS 00213+6530

    CERN Document Server

    Busquet, G; Estalella, R; Girart, J M; Anglada, G; Sepúlveda, I

    2009-01-01

    We aim at studying with high angular resolution a dense core associated with a low-luminosity IRAS source, IRAS 00213+6530, in order to investigate whether low mass star formation is really taking place in isolation. We performed observations at 1.2mm with the IRAM 30m telescope, VLA observations at 6cm, 3.6cm, 1.3cm, 7mm, and H2O maser and NH3 lines, and observations with the NASA 70m antenna in CCS and H2O maser. The cm and mm continuum emission, together with the near infrared data from the 2MASS allowed us to identify 3 YSOs, IRS1, VLA8A, and VLA8B, with different radio and infrared properties, and which seem to be in different evolutionary stages. The NH3 emission consists of three clouds. Two of these, MM1 and MM2, are associated with dust emission, while the southern cloud is only detected in NH3. The YSOs are embedded in MM1, where we found evidence of line broadening and temperature enhancements. On the other hand, the southern cloud and MM2 appear to be quiescent and starless. We modeled the radial ...

  9. Annual Parallax Distance and Secular Motion of the Water Fountain Source IRAS 18286-0959

    CERN Document Server

    Imai, Hiroshi; Honma, Mareki; Miyaji, Takeshi

    2012-01-01

    We report on results of astrometric observations of water vapor masers in the "water fountain" source IRAS 18286-0959 (I18286) with the VLBI Exploration of Radio Astrometry (VERA). These observations yielded an annual parallax of IRAS 18286-0959, pi=0.277+/-0.041 mas, corresponding to a heliocentric distance of D=3.61(+0.63)(-0.47) kpc. The maser feature, whose annual parallax was measured, showed the absolute proper motion of (mu_alpha, mu_delta)=(-3.2 +/- 0.3, -7.2 +/- 0.2) [mas/yr]. The intrinsic motion of the maser feature in the internal motions of the cluster of features in I18286 does not seem to trace the motion of the bipolar jet of I18286. Taking into account this intrinsic motion, the derived motion of the maser feature is roughly equal to that of the maser source I18286 itself. The proximity of I18286 to the Galactic midplane (z~10 pc) suggests that the parental star of the water fountain source in I18286 should be intermediate-mass AGB/post-AGB star, but the origin of a large deviation of the sys...

  10. Active galactic nucleus torus models and the puzzling infrared spectrum of IRAS F10214+4724

    CERN Document Server

    Efstathiou, A; Verma, A; Siebenmorgen, R

    2013-01-01

    We present a revised model for the infrared emission of the hyperluminous infrared galaxy IRAS F10214+4724 which takes into account recent photometric data from Spitzer and Herschel that sample the peak of its spectral energy distribution. We first present and discuss a grid of smooth active galactic nucleus (AGN) torus models computed with the method of Efstathiou & Rowan-Robinson and demonstrate that the combination of these models and the starburst models of Efstathiou and coworkers, while able to give an excellent fit to the average spectrum of Seyfert 2s and spectra of individual type 2 quasars measured by Spitzer, fails to match the spectral energy distribution of IRAS F10214+4724. This is mainly due to the fact that the nuSnu distribution of the galaxy falls very steeply with increasing frequency (a characteristic that is usually indicative of heavy absorption by dust) but shows a silicate feature in emission. Such emission features are not expected in sources with optical/near-infrared type 2 AGN ...

  11. High-velocity OH megamasers in IRAS 20100-4156: Evidence for a Supermassive Black Hole

    CERN Document Server

    Harvey-Smith, L; Green, J A; Bannister, K W; Chippendale, A; Edwards, P G; Heywood, I; Hotan, A W; Lenc, E; Marvil, J; McConnell, D; Phillips, C P; Sault, R J; Serra, P; Stevens, J; Voronkov, M; Whiting, M

    2016-01-01

    We report the discovery of new, high-velocity narrow-line components of the OH megamaser in IRAS 20100-4156. Results from the Australian Square Kilometre Array Pathfinder (ASKAP)'s Boolardy Engineering Test Array (BETA) and the Australia Telescope Compact Array (ATCA) provide two independent measurements of the OH megamaser spectrum. We found evidence for OH megamaser clumps at $-$409 and $-$562 km/s (blue-shifted) from the systemic velocity of the galaxy, in addition to the lines previously known. The presence of such high velocities in the molecular emission from IRAS 20100$-$4156 could be explained by a ~50 pc molecular ring enclosing an approximately 3.8 billion solar mass black hole. We also discuss two alternatives, i.e. that the narrow-line masers are dynamically coupled to the wind driven by the active galactic nucleus or they are associated with two separate galactic nuclei. The comparison between the BETA and ATCA spectra provides another scientific verification of ASKAP's BETA. Our data, combined w...

  12. The CO Molecular Outflows of IRAS 16293-2422 Probed by the Submillimeter Array

    CERN Document Server

    Yeh, Sherry C C; Bourke, Tyler L; Ho, Paul T P; Lee, Chin-Fei; Ohashi, Nagayoshi; Takakuwa, Shigehisa

    2007-01-01

    We have mapped the proto-binary source IRAS 16293-2422 in CO 2-1, 13CO 2-1, and CO 3-2 with the Submillimeter Array (SMA). The maps with resolution of 1".5-5" reveal a single small scale (~3000 AU) bipolar molecular outflow along the east-west direction. We found that the blueshifted emission of this small scale outflow mainly extends to the east and the redshifted emission to the west from the position of IRAS 16293A. A comparison with the morphology of the large scale outflows previously observed by single-dish telescopes at millimeter wavelengths suggests that the small scale outflow may be the inner part of the large scale (~15000 AU) E-W outflow. On the other hand, there is no clear counterpart of the large scale NE-SW outflow in our SMA maps. Comparing analytical models to the data suggests that the morphology and kinematics of the small scale outflow can be explained by a wide-angle wind with an inclination angle of ~30-40 degrees with respect to the plane of the sky. The high resolution CO maps show t...

  13. Proper Motions of H2O Masers in the Water Fountain Source IRAS 19190+1102

    CERN Document Server

    Day, F M; Claussen, M J; Sahai, R

    2010-01-01

    We report on the results of two epochs of Very Long Baseline Array (VLBA) observations of the 22 GHz water masers toward IRAS 19190+1102. The water maser emission from this object shows two main arc-shaped formations perpendicular to their NE-SW separation axis. The arcs are separated by ~280 mas in position, and are expanding outwards at an angular rate of 2.35 mas/yr. We detect maser emission at velocities between -53.3 km/s to +78.0 km/s and there is a distinct velocity pattern where the NE masers are blueshifted and the SW masers are redshifted. The outflow has a three-dimensional outflow velocity of 99.8 km/s and a dynamical age of about 59 yr. A group of blueshifted masers not located along the arcs shows a change in velocity of more than 35 km/s between epochs, and may be indicative of the formation of a new lobe. These observations show that IRAS 19190+1102 is a member of the class of "water fountain"' pre-planetary nebulae displaying bipolar structure

  14. Anomalously Steep Reddening Law in Quasars: An Exceptional Example Observed in IRAS14026+4341

    CERN Document Server

    Jiang, Peng; Ji, Tuo; Shu, Xinwen; Liu, Wenjuan; Wang, Jianguo; Dong, Xiaobo; Bai, Jinming; Wang, Huiyuan; Wang, Tinggui

    2013-01-01

    A fraction of the heavily reddened quasars require a reddening curve which is even steeper than that of the Small Magellanic Cloud. In this paper, we thoroughly characterize the anomalously steep reddening law in quasars, via an exceptional example observed in IRAS 14026+4341. By comparing the observed spectrum to the quasar composite spectrum, we derive a reddening curve in the rest-frame wavelength range of 1200 {\\AA}--10000 {\\AA}. It is featured with a steep rise at wavelengths shorter than 3000 {\\AA}, but no significant reddening at longer wavelengths. The absence of dust reddening in optical continuum is confirmed by the normal broad-line Balmer decrement (the H$\\alpha$/H$\\beta$ ratio) in IRAS 14026+4341. The anomalous reddening curve can be satisfactorily reproduced by a dust model containing silicate grains in a power-law size distribution, $dn(a)/da \\propto a^{-1.4}$, truncated at a maximum size $a_{max}=70 {\\rm nm}$. The unusual size distribution may be caused by the destruction of large "stardust" g...

  15. A new model for the infrared emission of IRAS F10214+4724

    CERN Document Server

    Efstathiou, Andreas; Verma, Aprajita; Siebenmorgen, Ralf

    2012-01-01

    We present a new model for the infrared emission of the high redshift hyperluminous infrared galaxy IRAS F10214+4724 which takes into account recent photometric data from Spitzer and Herschel that sample the peak of its spectral energy distribution. We first demonstrate that the combination of the AGN tapered disc and starburst models of Efstathiou and coworkers, while able to give an excellent fit to the average spectrum of type 2 AGN measured by Spitzer, fails to match the spectral energy distribution of IRAS F10214+4724. This is mainly due to the fact that the nuSnu distribution of the galaxy falls very steeply with increasing frequency (a characteristic of heavy absorption by dust) but shows a silicate feature in emission. We propose a model that assumes two components of emission: clouds that are associated with the narrow-line region and a highly obscured starburst. The emission from the clouds must suffer significantly stronger gravitational lensing compared to the emission from the torus to explain th...

  16. A survey for water maser emission towards planetary nebulae. New detection in IRAS 17347-3139

    CERN Document Server

    De Gregorio-Monsalvo, I; Anglada, G; Cesaroni, R; Miranda, L F; Gómez, J F; Torrelles, J M; Gregorio-Monsalvo, Itziar de; Gomez, Yolanda; Anglada, Guillem; Cesaroni, Riccardo; Miranda, Luis F.; Gomez, Jose F.; Torrelles, Jose M.

    2004-01-01

    We report on a water maser survey towards a sample of 27 planetary nebulae (PNe) using the Robledo de Chavela and Medicina single-dish antennas, as well as the Very Large Array (VLA). Two detections have been obtained: the already known water maser emission in K 3-35, and a new cluster of masers in IRAS 17347-3139. This low rate of detections is compatible with the short life-time of water molecules in PNe (~100 yr). The water maser cluster at IRAS 17347-3139 are distributed on a ellipse of size ~ 0.2" x 0.1", spatially associated with compact 1.3 cm continuum emission (simultaneously observed with the VLA). From archive VLA continuum data at 4.9, 8.4, and 14.9 GHz, a spectral index alpha = 0.76 +- 0.03 is derived for this radio source, which is consistent with either a partially optically thick ionized region or with an ionized wind. However, the latter scenario can be ruled out on mass-loss considerations, thus indicating that this source is probably a young PN. The spatial distribution and the radial veloc...

  17. A multiwavelength study of the star forming region IRAS 18544+0112

    CERN Document Server

    Ortega, M E; Cichowolski, S; Rubio, M; Castelletti, G; Dubner, G

    2009-01-01

    This work aims at investigating the molecular and infrared components in the massive young stellar object (MYSO) candidate IRAS 18544+0112. The purpose is to determine the nature and the origin of this infrared source. To analyze the molecular gas towards IRAS 18544+0112, we have carried out observations in a 90" x 90" region around l = 34.69, b = -0.65, using the Atacama Submillimeter Telescope Experiment (ASTE) in the 12CO J=3-2, 13CO J=3-2, HCO+ J=4-3 and CS J=7-6 lines with an angular resolution of 22". The infrared emission in the area has been analyzed using 2MASS and Spitzer public data. From the molecular analysis, we find self-absorbed 12CO J=3-2 profiles, which are typical in star forming regions, but we do not find any evidence of outflow activity. Moreover, we do not detect either HCO+ J=4-3 or CS J=7-6 in the region, which are species normally enhanced in molecular outflows and high density envelopes. The 12CO J=3-2 emission profile suggests the presence of expanding gas in the region. The Spitze...

  18. Complex resonance absorption structure in the X-ray spectrum of IRAS13349+2438

    CERN Document Server

    Sako, M; Behar, E; Kaastra, J S; Brinkman, A C; Boller, T; Puchnarewicz, E M; Starling, R; Liedahl, D A; Clavel, J; Santos-Lleó, M; Boller, Th.

    2001-01-01

    The luminous infrared-loud quasar IRAS 13349+2438 was observed with the XMM-Newton Observatory as part of the Performance Verification program. The spectrum obtained by the Reflection Grating Spectrometer (RGS) exhibits broad (v ~ 1400 km/s FWHM) absorption lines from highly ionized elements including hydrogen- and helium-like carbon, nitrogen, oxygen, and neon, and several iron L-shell ions (Fe XVII - XX). Also shown in the spectrum is the first astrophysical detection of a broad absorption feature around lambda = 16 - 17 Ang identified as an unresolved transition array (UTA) of 2p - 3d inner-shell absorption by iron M-shell ions in a much cooler medium; a feature that might be misidentified as an O VII edge when observed with moderate resolution spectrometers. No absorption edges are clearly detected in the spectrum. We demonstrate that the RGS spectrum of IRAS 13349+2438 exhibits absorption lines from at least two distinct regions, one of which is tentatively associated with the medium that produces the op...

  19. The AMIGA sample of isolated galaxies III. IRAS data and infrared diagnostics

    CERN Document Server

    Lisenfeld, U; Sulentic, J; Leon, S; Espada, D; Bergond, G; Sabater, J; Santander-Vela, J D; Verley, S

    2006-01-01

    We describe the mid- (MIR) and far- (FIR) infrared properties of a large ($\\sim$1000) sample of the most isolated galaxies in the local Universe. This sample is intended as a ``nurture-free'' zero point against which more environmentally influenced samples can be compared. We reprocess IRAS MIR/FIR survey data using the ADDSCAN/SCANPI utility for 1030 out of 1050 galaxies from the Catalogue of Isolated Galaxies (CIG) as part of the AMIGA project. We focus on diagnostics (FIR luminosity $L_{FIR}$, $R=\\log(L_{FIR}/L_{B})$ and IRAS colours) thought to be sensitive to effects of environment or interaction. The distribution of $\\log(L_{FIR})$ is sharply peaked from 9.0--10.5 with very few ($<$2%) galaxies above 10.5. The optically normalised luminosity diagnostic $R= \\log(L_{FIR}/L_{B})$ shows a distribution sharply peaked between 0.0 and $-$1.0. These results were compared to the magnitude limited CfA sample that was selected without environmental discrimination. This modestly (e.g. compared to cluster, binary...

  20. On the kinematics of massive star forming regions: the case of IRAS 17233-3606

    CERN Document Server

    Leurini, S; Zapata, L; Beltran, M T; Schilke, P; Cesaroni, R

    2011-01-01

    Direct observations of accretion disks around high-mass young stellar objects would help to discriminate between different models of formation of massive stars. However, given the complexity of massive star forming regions, such studies are still limited in number. Additionally, there is still no general consensus on the molecular tracers to be used for such investigations. Because of its close distance and high luminosity, IRAS 17233-3606 is a potential good laboratory to search for traces of rotation in the inner gas around the protostar(s). Therefore, we selected the source for a detailed analysis of its molecular emission at 230 GHz with the SMA. We systematically investigated the velocity fields of transitions in the SMA spectra which are not affected by overlap with other transitions, and searched for coherent velocity gradients to compare them to the distribution of outflows in the region. Beside CO emission we also used high-angular H2 images to trace the outflow motions driven by the IRAS 17233-3606 ...

  1. Helical Magnetic Fields in the NGC1333 IRAS 4A Protostellar Outflows

    CERN Document Server

    Ching, Tao-Chung; Zhang, Qizhou; Yang, Louis; Girart, Josep M; Rao, Ramprasad

    2016-01-01

    We present Submillimeter Array (SMA) polarization observations of the CO $J$ = 3--2 line toward the NGC1333 IRAS 4A. The CO Stokes $I$ maps at an angular resolution of $\\sim$1$\\arcsec$ reveal two bipolar outflows from the binary sources of the NGC 1333 IRAS 4A. The kinematic features of the CO emission can be modeled by wind-driven outflows at $\\sim$ 20$\\arcdeg$ inclined from the plane of the sky. Close to the protostars the CO polarization, at an angular resolution of $\\sim$$2\\farcs3$, has a position angle approximately parallel to the magnetic field direction inferred from the dust polarizations. The CO polarization direction appears to vary smoothly from an hourglass field around the core to an arc-like morphology wrapping around the outflow, suggesting a helical structure of magnetic fields that inherits the poloidal fields at the launching point and consists of toroidal fields at a farther distance of outflow. The helical magnetic field is consistent with the theoretical expectations for launching and co...

  2. The physical environment around IRAS 17599-2148: infrared dark cloud and bipolar nebula

    CERN Document Server

    Dewangan, L K; Zinchenko, I; Janardhan, P; Ghosh, S K; Luna, A

    2016-01-01

    We present a multi-scale and multi-wavelength study to investigate the star formation process around IRAS 17599$-$2148 that is part of an elongated filamentary structure (EFS) (extension $\\sim$21 pc) seen in the {\\it Herschel} maps. Using the {\\it Herschel} data analysis, at least six massive clumps (M$_{clump}$ $\\sim$777 -- 7024 M$_{\\odot}$) are found in the EFS with a range of temperature and column density of $\\sim$16--39~K and $\\sim$0.6--11~$\\times$~10$^{22}$ cm$^{-2}$ (A$_{V}$ $\\sim$7--117 mag), respectively. The EFS hosts cold gas regions (i.e. infrared dark cloud) without any radio detection and a bipolar nebula (BN) linked with the H\\,{\\sc ii} region IRAS 17599$-$2148, tracing two distinct environments inferred through the temperature distribution and ionized emission. Based on virial analysis and higher values of self-gravitating pressure, the clumps are found unstable against gravitational collapse. We find 474 young stellar objects (YSOs) in the selected region and $\\sim$72\\% of these YSOs are foun...

  3. Modelling the Extreme X-ray Spectrum of IRAS 13224-3809

    CERN Document Server

    Chiang, Chia-Ying; Fabian, A C; Wilkins, D R; Gallo, L C

    2014-01-01

    The extreme NLS1 galaxy IRAS 13224-3809 shows significant variability, frequency depended time lags, and strong Fe K line and Fe L features in the long 2011 XMM-Newton observation. In this work we study the spectral properties of IRAS 13224-3809 in detail, and carry out a series of analyses to probe the nature of the source, focusing in particular on the spectral variability exhibited. The RGS spectrum shows no obvious signatures of absorption by partially ionised material (warm absorbers). We fit the 0.3-10.0 keV spectra with a model that includes relativistic reflection from the inner accretion disc, a standard powerlaw AGN continuum, and a low-temperature (~0.1 keV) blackbody, which may originate in the accretion disc, either as direct or reprocessed thermal emission. We find that the reflection model explains the time-averaged spectrum well, and we also undertake flux-resolved and time-resolved spectral analyses, which provide evidence of gravitational light-bending effects. Additionally, the temperature ...

  4. IRAS 18511+0146: a proto Herbig Ae/Be cluster?

    CERN Document Server

    Vig, S; Walmsley, M; Molinari, S; Carey, S; Noriega-Crespo, A

    2007-01-01

    Context: The evolution of a young protocluster depends on the relative spatial distributions and dynamics of both stars and gas. Aims: We study the distribution and properties of the gas and stars surrounding the luminous (10^4 L_sun) protocluster IRAS 18511+0146. Methods: IRAS 18511+0146 and the cluster associated with it has been investigated using the sub-millimetre (JCMT-SCUBA), infrared (Spitzer-MIPSGAL, Spitzer-GLIMPSE, Palomar) and radio (VLA) continuum data. Cluster simulations have been carried out in order to understand the properties of clusters as well as to compare with the observations. Results: The central most obscured part of the protocluster coincident with the compact sub-millimetre source found with SCUBA is responsible for at least 2/3 of the total luminosity. A number of cluster members have been identified which are bright in mid infrared and show rising (near to mid infrared) spectral energy distributions suggesting that these are very young stellar sources. In the mid infrared 8.0 mic...

  5. HDO abundance in the envelope of the solar-type protostar IRAS16293-2422

    CERN Document Server

    Parise, B; Castets, A; Ceccarelli, C; Loinard, L; Tielens, A G G M; Bacmann, A; Cazaux, S; Comito, C; Helmich, F; Kahane, C; Schilke, P; Van Dishoeck, E F; Wakelam, V; Walters, A

    2004-01-01

    We present IRAM 30m and JCMT observations of HDO lines towards the solar-type protostar IRAS 16293-2422. Five HDO transitions have been detected on-source, and two were unfruitfully searched for towards a bright spot of the outflow of IRAS 16293-2422. We interpret the data by means of the Ceccarelli, Hollenbach and Tielens (1996) model, and derive the HDO abundance in the warm inner and cold outer parts of the envelope. The emission is well explained by a jump model, with an inner abundance of 1e-7 and an outer abundance lower than 1e-9 (3 sigma). This result is in favor of HDO enhancement due to ice evaporation from the grains in theinner envelope. The deuteration ratio HDO/H2O is found to be f_in=3% and f_out < 0.2% (3 sigma) in the inner and outer envelope respectively and therefore, the fractionation also undergoes a jump in the inner part of the envelope. These results are consistent with the formation of water in the gas phase during the cold prestellar core phase and storage of the molecules on the ...

  6. Multi-wavelength analysis of IRAS 23011+6126 and its young embedded outflow.

    Science.gov (United States)

    Moro-Martin, A.; Noriega-Crespo, A.; Molinari, S.; Testi, L.; Cernicharo, J.; Sargent, A.

    2001-05-01

    We have recently completed a study of the IRAS 23011+6126 source and its young outflow Cepheus E (Cep E). They have been observed in the mid ( ~ 5-17 microns) and far infrared ( ~ 40-200 microns) using the ISO instruments CAM and LWS and at millimetric wavelengths (110.2 and 222 GHz) using OVRO. The spectral energy distribution of IRAS 23011+6126 has spectral features similar to those of a Class I source rather than a Class 0, as previously proposed. Its mass envelope and bolometric luminosity, 13.2 Msun and 30 Lsun respectively, are consistent with this view. The Cep E outflow is very young (3000-5000 yrs old), dominated by strong pure rotational H2 lines in the mid infrared, and a spectrum rich in H2O and CO lines in the far infrared. The resulting H2O abundances are between 100 and 4000 times greater than the one found in quiescent molecular clouds, confirming once more the presence of high water abundance in the shocked gas associated with young stellar outflows. Founding institutions and grants are: Steward Observatory, JPL/Caltech, NSF grant AST-96-13717, NASA grant NAGW--4030, Agenzia Spaziale Italiana grant ASI ARS-78-1999, Spanish DGES grants PB96-0883 and PNIE98-1351.

  7. Detection of CH3SH in protostar IRAS 16293-2422

    CERN Document Server

    Majumdar, Liton; Vidal, Thomas; Wakelam, Valentine; Loison, Jean-Christophe; Hickson, Kevin M; Caux, Emmanuel

    2016-01-01

    The nature of the main sulphur reservoir in star forming regions is a long standing mystery. The observed abundance of sulphur-bearing species in dense clouds is only about 0.1 per cent of the same quantity in diffuse clouds. Therefore, the main sulphur species in star forming regions of the interstellar medium are still unknown. IRAS 16293-2422 is one of the regions where production of S-bearing species is favourable due to its conditions which allows the evaporation of ice mantles. We carried out observations in the 3 mm band towards the solar type protostar IRAS 16293-2422 with the IRAM 30m telescope. We observed a single frequency setup with the EMIR heterodyne 3 mm receiver with an Lower Inner (LI) tuning frequency of 89.98 GHz. Several lines of the complex sulphur species CH3SH were detected. Observed abundances are compared with simulations using the NAUTILUS gas-grain chemical model. Modelling results suggest that CH3SH has the constant abundance of 4e-9 (compared to H2) for radii lower than 200 AU an...

  8. Dust and Gas environment of the young embedded cluster IRAS 18511+0146

    CERN Document Server

    Vig, S; Walmsley, C M; Cesaroni, R; Molinari, S

    2016-01-01

    IRAS 18511+0146 is a young embedded (proto)cluster located at 3.5 kpc surrounding what appears to be an intermediate mass protostar. In this paper, we investigate the nature of cluster members (two of which are believed to be the most massive and luminous) using imaging and spectroscopy in the near and mid-infrared. The brightest point-like object associated with IRAS 18511+0146 is referred to as S7 in the present work (designated UGPS J185337.88+015030.5 in the UKIRT Galactic Plane survey). Seven of the nine objects show rising spectral energy distributions (SED) in the near-infrared, with four objects showing Br-gamma emission. Three members: S7, S10 (also UGPS J185338.37+015015.3) and S11 (also UGPS J185338.72+015013.5) are bright in mid-infrared with diffuse emission being detected in the vicinity of S11 in PAH bands. Silicate absorption is detected towards these three objects, with an absorption maximum between 9.6 and 9.7 um, large optical depths (1.8-3.2), and profile widths of 1.6-2.1 um. The silicate...

  9. Water distribution in shocked regions of the NGC1333-IRAS4A protostellar outflow

    CERN Document Server

    Santangelo, G; Codella, C; Lorenzani, A; Yildiz, U A; Antoniucci, S; Bjerkeli, P; Cabrit, S; Giannini, T; Kristensen, L; Liseau, R; Mottram, J C; Tafalla, M; van Dishoeck, E F

    2014-01-01

    We present the study of the H2O spatial distribution at two bright shocked regions along IRAS4A, one of the strongest H2O emitters among the Class 0 outflows. We obtained Herschel-PACS maps of the IRAS4A outflow and HIFI observations of two shocked positions. The largest HIFI beam of 38 arcsec at 557 GHz was mapped in several key water lines with different upper energy levels, to reveal possible spatial variations of the line profiles. We detect four H2O lines and CO (16-15) at the two selected positions. In addition, transitions from related outflow and envelope tracers are detected. Different gas components associated with the shock are identified in the H2O emission. In particular, at the head of the red lobe of the outflow, two distinct gas components with different excitation conditions are distinguished in the HIFI emission maps: a compact component, detected in the ground-state water lines, and a more extended one. Assuming that these two components correspond to two different temperature components ob...

  10. The properties of diffuse interstellar dust clouds as determined from GALEX and infrared (IRAS, Herschel) observations

    Science.gov (United States)

    Armengot, M.; Gómez de Castro, A. I.

    2017-03-01

    Dust grain properties are known to vary in the interstellar medium depending on the density, the ultraviolet radiation field and the local abundances of metal elements. Though there are plenty of studies addressing the atomic and molecular gas component or the infrared radiation of dust grains, there are very few studies that address the spatial distribution of small large grains and large molecules such as the Polyaromathic Hydrocarbons (PAHs).In this work, we make use of the GALEX survey of the Galaxy to identify the absorption produced in the GALEX far UV (write in the spectral range) and new UV (write in the spectral range) by well know infrared cirrus and compare the absorption produced in the UV by the thin cirrus with the infrared dust emissivity in various bands; (describe the IRAS bands used and whether there is any Herschel band in this study). As the spatial resolution of GALEX images is significantly larger than that of IRAS images data handling has required mosaicking and and rescaling GALEX data as well as transforming the images form equinox 1950 to equinox 2000. We describe in this work the computational procedures used to generate the ultraviolet and infrared maps. Also we present our first results that show there is an anticorrelation between UV and infrared (IR) emission, as other wise expected. The largest concentrations of dust grains radiate IR photons and absorb UV photons.

  11. First Views of a Nearby LIRG: Star Formation and Molecular Gas in IRAS 04296+2923

    CERN Document Server

    Meier, David S; Beck, Sara C; Gorjian, Varoujan; Tsai, Chao-Wei; Van Dyk, Schuyler D

    2010-01-01

    We present a first look at the local LIRG, IRAS04296+2923. This barred spiral, overlooked because of its location in the Galactic plane, is among the half dozen closest LIRGs. More IR-luminous than either M82 or the Antennae, it may be the best local example of a nuclear starburst caused by bar-mediated secular evolution. We present Palomar J and Pa beta images, VLA maps from 20-1.3cm, a Keck LWS image at 11.7mic and OVRO CO(1-0) and ^13CO(1-0), and 2.7 mm continuum images. The J-band image shows a symmetric barred spiral. Two bright, compact mid-IR/radio sources in the nucleus comprise a starburst that is equivalent to 10^5 O7 stars, probably a pair of young super star clusters separated by 30pc. The nuclear starburst is forming stars at the rate of ~12Msun/yr, half of the total star formation rate for the galaxy of ~25Msun/yr. IRAS04296 is bright in CO, and among the most gas-rich galaxies in the local universe. The CO luminosity of the inner half kpc is equivalent to that of the entire Milky Way. While the...

  12. Monte Carlo calculations and experimental measurements of dosimetric parameters of the IRA-103Pd brachytherapy source.

    Science.gov (United States)

    Sadeghi, Mahdi; Raisali, Gholamreza; Hosseini, S Hamed; Shavar, Arzhang

    2008-04-01

    This article presents a brachytherapy source having 103Pd adsorbed onto a cylindrical silver rod that has been developed by the Agricultural, Medical, and Industrial Research School for permanent implant applications. Dosimetric characteristics (radial dose function, anisotropy function, and anisotropy factor) of this source were experimentally and theoretically determined in terms of the updated AAPM Task group 43 (TG-43U1) recommendations. Monte Carlo simulations were used to calculate the dose rate constant. Measurements were performed using TLD-GR200A circular chip dosimeters using standard methods employing thermoluminescent dosimeters in a Perspex phantom. Precision machined bores in the phantom located the dosimeters and the source in a reproducible fixed geometry, providing for transverse-axis and angular dose profiles over a range of distances from 0.5 to 5 cm. The Monte Carlo N-particle (MCNP) code, version 4C simulation techniques have been used to evaluate the dose-rate distributions around this model 103Pd source in water and Perspex phantoms. The Monte Carlo calculated dose rate constant of the IRA-103Pd source in water was found to be 0.678 cGy h(-1) U(-1) with an approximate uncertainty of +/-0.1%. The anisotropy function, F(r, theta), and the radial dose function, g(r), of the IRA- 103Pd source were also measured in a Perspex phantom and calculated in both Perspex and liquid water phantoms.

  13. Ammonia Imaging of the Disks in the NGC 1333 IRAS 4A Protobinary System

    CERN Document Server

    Choi, Minho; Park, Geumsook; Kang, Miju

    2007-01-01

    The NGC 1333 IRAS 4A protobinary was observed in the ammonia (2, 2) and (3, 3) lines and in the 1.3 cm continuum with a high resolution (about 1.0 arcsec). The ammonia maps show two compact sources, one for each protostar, and they are probably protostellar accretion disks. The disk associated with IRAS 4A2 is seen nearly edge-on and shows an indication of rotation. The A2 disk is brighter in the ammonia lines but dimmer in the dust continuum than its sibling disk, with the ammonia-to-dust flux ratios different by about an order of magnitude. This difference suggests that the twin disks have surprisingly dissimilar characters, one gas-rich and the other dusty. The A2 disk may be unusually active or hot, as indicated by its association with water vapor masers. The existence of two very dissimilar disks in a binary system suggests that the formation process of multiple systems has a controlling agent lacking in the isolated star formation process and that stars belonging to a multiple system do not necessarily ...

  14. Modeling the magnetic field in the protostellar source NGC 1333 IRAS 4A

    CERN Document Server

    Goncalves, Jose; Girart, Josep M

    2008-01-01

    Magnetic fields are believed to play a crucial role in the process of star formation. We compare high-angular resolution observations of the submillimeter polarized emission of NGC 1333 IRAS 4A, tracing the magnetic field around a low-mass protostar, with models of the collapse of magnetized molecular cloud cores. Assuming a uniform dust alignment efficiency, we computed the Stokes parameters and synthetic polarization maps from the model density and magnetic field distribution by integrations along the line-of-sight and convolution with the interferometric response. The synthetic maps are in good agreement with the data. The best-fitting models were obtained for a protostellar mass of 0.8 solar masses, of age 9e4 yr, formed in a cloud with an initial mass-to-flux ratio ~2 times the critical value. The magnetic field morphology in NGC 1333 IRAS 4A is consistent with the standard theoretical scenario for the formation of solar-type stars, where well-ordered, large-scale, rather than turbulent, magnetic fields ...

  15. VizieR Online Data Catalog: SPM 4.0 Catalog (Girard+, 2011)

    Science.gov (United States)

    Girard, T. M.; van Altena, W. F.; Zacharias, N.; Vieira, K.; Casetti-Dinescu, D. I.; Castillo, D.; Herrera, D.; Lee, Y. S.; Beers, T. C.; Monet, D. G.; Lopez, C. E.

    2011-03-01

    The SPM4 Catalog contains absolute proper motions, celestial coordinates, and B,V photometry for 103,319,647 stars and galaxies between the south celestial pole and -20 degrees declination. The catalog is roughly complete to V=17.5. It is based on photographic and CCD observations taken with the Yale Southern Observatory's double-astrograph at Cesco Observatory in El Leoncito, Argentina. The first-epoch survey, taken from 1965 to 1979, was entirely photographic. The second-epoch survey is approximately 1/3 photographic (taken from 1988 to 1998) and 2/3 CCD-based (taken from 2004 through 2008). Full details about the creation of the SPM4.0 catalog can be found in the paper, and also in the document "spm4_doc.txt" file which describes the original files, accessible from http://www.astro.yale.edu/astrom/spm4cat/ (2 data files).

  16. The new NHGRI-EBI Catalog of published genome-wide association studies (GWAS Catalog)

    Science.gov (United States)

    MacArthur, Jacqueline; Bowler, Emily; Cerezo, Maria; Gil, Laurent; Hall, Peggy; Hastings, Emma; Junkins, Heather; McMahon, Aoife; Milano, Annalisa; Morales, Joannella; Pendlington, Zoe May; Welter, Danielle; Burdett, Tony; Hindorff, Lucia; Flicek, Paul; Cunningham, Fiona; Parkinson, Helen

    2017-01-01

    The NHGRI-EBI GWAS Catalog has provided data from published genome-wide association studies since 2008. In 2015, the database was redesigned and relocated to EMBL-EBI. The new infrastructure includes a new graphical user interface (www.ebi.ac.uk/gwas/), ontology supported search functionality and an improved curation interface. These developments have improved the data release frequency by increasing automation of curation and providing scaling improvements. The range of available Catalog data has also been extended with structured ancestry and recruitment information added for all studies. The infrastructure improvements also support scaling for larger arrays, exome and sequencing studies, allowing the Catalog to adapt to the needs of evolving study design, genotyping technologies and user needs in the future. PMID:27899670

  17. A Tale of Three Galaxies: A "Clumpy" View of the Spectroscopically Anomalous Galaxies IRAS F10398+1455, IRAS F21013-0739 and SDSS J0808+3948

    CERN Document Server

    Xie, Yanxia; Hao, Lei; Li, Aigen

    2016-01-01

    We investigate the dust properties in three spectroscopically anomalous galaxies (IRAS F10398+1455, IRAS F21013-0739 and SDSS J0808+3948). Their Spitzer/IRS spectra are characterized by a steep ~5-8 micron emission continuum, strong emission bands from polycyclic aromatic hydrocarbon (PAH) molecules, and prominent 10 micron silicate emission. The steep ~5-8 micron continuum and strong PAH emission features suggest the presence of starbursts, while the silicate emission is indicative of significant heating from AGNs. The simultaneous detection of these two observational properties has rarely been reported on galactic scale. We employ the PAHFIT software to estimate their starlight contributions, and the CLUMPY model for the components contributed by the AGN tori. We find that the CLUMPY model is generally successful in explaining the overall dust infrared emission, although it appears to emit too flat at the ~5-8 micron continuum to be consistent with that observed in IRAS F10398+1455 and IRAS F21013-0739. The...

  18. Geostationary Satellite (GOES) Images

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Visible and Infrared satellite imagery taken from radiometer instruments on SMS (ATS) and GOES satellites in geostationary orbit. These satellites produced...

  19. A JEM-X Catalog of X-ray Sources

    DEFF Research Database (Denmark)

    Westergaard, Niels Jørgen Stenfeldt

    2009-01-01

    . A search for weaker, persistent, sources has been done in deep mosaic images that have been produced with all available observations for a large number of sky regions. The two resulting catalogs hold 158 and 179 sources respectively, but the combined catalog consists of 209 sources. This catalog can...... be downloaded as a FITS binary table file with source information such as names, positions, and fluxes at the PoS web page for the conference....

  20. The Catalog Management Strategy of Distributed Data Base Systems

    Institute of Scientific and Technical Information of China (English)

    周龙骧; 秦箕英

    1994-01-01

    In this paper the catalog management strategy of the successfully integrating and running DDBMS C-POREL is summarized.The new catalog management strategy and its implementation scheme are based on the analysis of the catalog management methods of the pioneer DDBMS.The goal of the new strategy is to improve the system efficiency.Analysis and practice show that this strategy is successful.

  1. The cataloging of virtual communities of educational thematic

    OpenAIRE

    Roman Korzh; Andriy Peleschyshyn; Yuriy Syerov; Solomia Fedushko

    2014-01-01

    This article considers the current problem of investigation the specific of specialized catalog of educational virtual communities. Peculiarities of catalogs of virtual communities are formed. This study provides a method of organization of catalog of virtual communities of educational direction. This method is based on a formal model of virtual communities as an environment of information activity of the higher educational institutions. The result of the research is the method of socio-demog...

  2. The surprising inefficiency of dwarf satellite quenching

    CERN Document Server

    Wheeler, Coral; Cooper, Michael C; Boylan-Kolchin, Mike; Bullock, James S

    2014-01-01

    We study dwarf satellite galaxy quenching using observations from the Geha et al. (2012) NSA/SDSS catalog together with LCDM cosmological simulations to facilitate selection and interpretation. We show that fewer than 30% of dwarfs (M* ~ 10^8.5-10^9.5 Msun) identified as satellites within massive host halos (Mhost ~ 10^12.5-10^14 Msun) are quenched, in spite of the expectation from simulations that half of them should have been accreted more than 6 Gyr ago. We conclude that whatever the action triggering environmental quenching of dwarf satellites, the process must be highly inefficient. We investigate a series of simple, one-parameter quenching models in order understand what is required to explain the low quenched fraction and conclude that either the quenching timescale is very long (> 9.5 Gyr, a "slow starvation" scenario) or that the environmental trigger is not well matched to accretion within the virial volume. We discuss these results in light of the fact that most of the low mass dwarf satellites in ...

  3. Neptune's small satellites

    Science.gov (United States)

    Thomas, P.

    1992-04-01

    The small satellites of Neptune and other planets discovered during the Voyager 2 mission are discussed in terms of their composition and relationship to the planetary systems. The satellite Proteus is described in terms of its orbit, five other satellites are described, and they are compared to ther small satellites and systems. Neptune's satellites are hypothesized to be related to the ring system, and the satellite Galatea is related to the confinement of the rings.

  4. VizieR Online Data Catalog: Galaxy Redshifts (Rood 1980)

    Science.gov (United States)

    Rood, H. J.

    1995-10-01

    The Catalog of Galaxy Redshifts was compiled by Dr. Rood to enter the most accurate redshift for each entry in the Uppsala General Catalog of Galaxies below 15000 km/s, plus some fainter galaxies in the fields of rich clusters, plus some southern galaxies. The catalog is 99 percent complete for declinations north of -2.5deg and blue magnitude (Pmag) brighter than 13. The present documentation is mostly adapted from the "Documentation of the Machine-Readable Version of the Catalog of Galaxy Redshifts" by Theresa A. Nagy and Robert S. Hill, May 1981, prepared for NASA GSFC, Greenbelt, No SSD-T-5069-0013-81. (1 data file).

  5. Maps and related cartographic materials cataloging, classification, and bibliographic control

    CERN Document Server

    Larsgarrd L, Mary

    2013-01-01

    Make maps and other cartographic materials more easily accessible and usable!Maps and Related Cartographic Materials: Cataloging, Classification, and Bibliographic Control is a format-focused reference manual for catalogers that should occupy a prominent place on your reference shelf.Outside of standard cartographic cataloging tools, the bibliographic treatment of all forms of cartographic materials has never been compiled into one useful source. This book separately examines the treatment of all major cartographic format types and outlines the way each should be cataloged.

  6. The CATS database to operate with astrophysical catalogs

    CERN Document Server

    Verkhodanov, O V; Andernach, H; Chernenkov, V N; Verkhodanov, Oleg V.; Trushkin, Sergei A.; Andernach, Heinz; Chernenkov, Vladimir N.

    1996-01-01

    A public database of astrophysical (radio and other) catalogs (CATS), has been created at Special Astrophysical Observatory (SAO). It allows to execute a number of operations in batch or interactive mode, e.g. to obtain a list and parameters of catalogs, to extract objects from one or several catalogs by various selection criteria, perform cross-identification of different catalogs, or construct radio spectra of selected sources. Access to CATS is provided in both dialog mode (non-graphics), and graphics mode (hypertext, via Tcl/Tk or possibly JAVA in future). The result of CATS operation can be sent to the user in tabular and graphical formats.

  7. ALMA 690 GHz OBSERVATIONS OF IRAS 16293-2422B: INFALL IN A HIGHLY OPTICALLY THICK DISK

    Energy Technology Data Exchange (ETDEWEB)

    Zapata, Luis A.; Loinard, Laurent; Rodriguez, Luis F.; Hernandez-Hernandez, Vicente [Centro de Radioastronomia y Astrofisica, UNAM, Apdo. Postal 3-72 (Xangari), 58089 Morelia, Michoacan (Mexico); Takahashi, Satoko; Trejo, Alfonso [Academia Sinica Institute of Astronomy and Astrophysics, P.O. Box 23-141, Taipei 10617, Taiwan (China); Parise, Berengere [Max-Planck-Institut fuer Radioastronomie, Auf dem Huegel 69, D-53121 Bonn (Germany)

    2013-02-10

    We present sensitive, high angular resolution ({approx}0.''2) submillimeter continuum and line observations of IRAS 16293-2422B made with the Atacama Large Millimeter/Submillimeter Array. The 0.45 mm continuum observations reveal a single and very compact source associated with IRAS 16293-2422B. This submillimeter source has a deconvolved angular size of about 400 mas (50 AU) and does not show any inner structure inside of this diameter. The H{sup 13}CN, HC{sup 15}N, and CH{sub 3}OH line emission regions are about twice as large as the continuum emission and reveal a pronounced inner depression or ''hole'' with a size comparable to that estimated for the submillimeter continuum. We suggest that the presence of this inner depression and the fact that we do not see an inner structure (or a flat structure) in the continuum are produced by very optically thick dust located in the innermost parts of IRAS 16293-2422B. All three lines also show pronounced inverse P-Cygni profiles with infall and dispersion velocities larger than those recently reported from observations at lower frequencies, suggesting that we are detecting faster and more turbulent gas located closer to the central object. Finally, we report a small east-west velocity gradient in IRAS 16293-2422B that suggests that its disk plane is likely located very close to the plane of the sky.

  8. Relación entre locus de control, ira y rendimiento deportivo en jugadores de tenis de mesa

    Directory of Open Access Journals (Sweden)

    Higinio González-García

    2017-01-01

    Full Text Available Los objetivos de este estudio fueron comprobar la relación entre el locus de control y el rendimiento de- portivo, y conocer la relación entre el locus de control y las variables de ira. La muestra de la investigación se compuso de 58 jugadores federados de tenis de mesa de toda la geografía española. Los participantes completa- ron un cuestionario sociodemográfico ad hoc , la Escala de Locus de Control (ELC y el Inventario de Expresión de la Ira Estado-Rasgo (STAXI-2. Los resultados revela- ron que no había diferencias de medias en los niveles de locus de control externo en función de la división de juego y del tipo de práctica deportiva (profesionales vs amateurs. Por otro lado, se confirmó la relación entre el locus de control externo y la expresión externa de la ira, encontrándose diferencias estadísticamente signifi- cativas entre la expresión externa de la ira y los grupos de locus de control externo alto y bajo. Finalmente, se concluyó que el nivel de rendimiento deportivo no in- terfería en los niveles de locus de control y, por otro lado, se confirma la relación del locus de control exter- no en la expresión externa de la ira de los jugadores de tenis de mesa. Por lo tanto, el locus de control interno se muestra como una variable protectora importante para intervenir con jugadores y entrenadores.

  9. PTP1B deficiency increases glucose uptake in neonatal hepatocytes: involvement of IRA/GLUT2 complexes.

    Science.gov (United States)

    González-Rodriguez, Agueda; Nevado, Carmen; Escrivá, Fernando; Sesti, Giorgio; Rondinone, Cristina M; Benito, Manuel; Valverde, Angela M

    2008-08-01

    The contribution of the liver to glucose utilization is essential to maintain glucose homeostasis. Previous data from protein tyrosine phosphatase (PTP) 1B-deficient mice demonstrated that the liver is a major site for PTP1B action in the periphery. In this study, we have investigated the consequences of PTP1B deficiency in glucose uptake in hepatocytes from neonatal and adult mice. The lack of PTP1B increased basal glucose uptake in hepatocytes from neonatal (3-5 days old) but not adult (10-12 wk old) mice. This occurs without changes in hexokinase, glucokinase, and glucose 6-phosphatase enzymatic activities. By contrast, the glucose transporter GLUT2 was upregulated at the protein level in neonatal hepatocytes and livers from PTP1B-deficient neonates. These results were accompanied by a significant increase in the net free intrahepatic glucose levels in the livers of PTP1B(-/-) neonates. The association between GLUT2 and insulin receptor (IR) A isoform was increased in PTP1B(-/-) neonatal hepatocytes compared with the wild-type. Indeed, PTP1B deficiency in neonatal hepatocytes shifted the ratio of isoforms A and B of the IR by increasing the amount of IRA and decreasing IRB. Moreover, overexpression of IRA in PTP1B(-/-) neonatal hepatocytes increased the amount of IRA/GLUT2 complexes. Conversely, hepatocytes from adult mice only expressed IRB. Since IRA plays a direct role in the regulation of glucose uptake in neonatal hepatocytes through its specific association with GLUT2, we propose the increase in IRA/GLUT2 complexes due to PTP1B deficiency as the molecular mechanism of the increased glucose uptake in the neonatal stage.

  10. Implication of insulin receptor A isoform and IRA/IGF-IR hybrid receptors in the aortic vascular smooth muscle cell proliferation: role of TNF-α and IGF-II.

    Science.gov (United States)

    Gómez-Hernández, Almudena; Escribano, Óscar; Perdomo, Liliana; Otero, Yolanda F; García-Gómez, Gema; Fernández, Silvia; Beneit, Nuria; Benito, Manuel

    2013-07-01

    To assess the role of insulin receptor (IR) isoforms (IRA and IRB) in the proliferation of vascular smooth muscle cells (VSMCs) involved in the atherosclerotic process, we generated new VSMC lines bearing IR (wild-type VSMCs; IRLoxP(+/+) VSMCs), lacking IR (IR(-/-) VSMCs) or expressing IRA (IRA VSMCs) or IRB (IRB VSMCs). Insulin and different proatherogenic stimuli induced a significant increase of IRA expression in IRLoxP(+/+) VSMCs. Moreover, insulin, through ERK signaling, and the proatherogenic stimuli, through ERK and p38 signaling, induced a higher proliferation in IRA than IRB VSMCs. The latter effect might be due to IRA cells showing a higher expression of angiotensin II, endothelin 1, and thromboxane 2 receptors and basal association between IRA and these receptors. Furthermore, TNF-α induced in a ligand-dependent manner a higher association between IRA and TNF-α receptor 1 (TNF-R1). On the other hand, IRA overexpression might favor the atherogenic actions of IGF-II. Thereby, IGF-II or TNF-α induced IRA and IGF-I receptor (IGF-IR) overexpression as well as an increase of IRA/IGF-IR hybrid receptors in VSMCs. More importantly, we observed a significant increase of IRA, TNF-R1, and IGF-IR expression as well as higher association of IRA with TNF-R1 or IGF-IR in the aorta from ApoE(-/-) and BATIRKO mice, 2 models showing vascular damage. In addition, anti-TNF-α treatment prevented those effects in BATIRKO mice. Finally, our data suggest that the IRA isoform and its association with TNF-R1 or IGF-IR confers proliferative advantage to VSMCs, mainly in response to TNF-α or IGF-II, which might be of significance in the early atherosclerotic process.

  11. 1SXPS: A Deep Swift X-Ray Telescope Point Source Catalog with Light Curves and Spectra

    Science.gov (United States)

    Evans, P. A.; Osborne, J. P.; Beardmore, A. P.; Page, K. L.; Willingale, R.; Mountford, C. J.; Pagani, C.; Burrows, D. N.; Kennea, J. A.; Perri, M.; Tagliaferri, G.; Gehrels, N.

    2013-01-01

    We present the 1SXPS (Swift-XRT point source) catalog of 151,524 X-ray point sources detected by the Swift-XRT in 8 yr of operation. The catalog covers 1905 sq deg distributed approximately uniformly on the sky. We analyze the data in two ways. First we consider all observations individually, for which we have a typical sensitivity of approximately 3 × 10(exp -13) erg cm(exp -2) s(exp -1) (0.3-10 keV). Then we co-add all data covering the same location on the sky: these images have a typical sensitivity of approximately 9 × 10(exp -14) erg cm(exp -2) s(exp -1) (0.3-10 keV). Our sky coverage is nearly 2.5 times that of 3XMM-DR4, although the catalog is a factor of approximately 1.5 less sensitive. The median position error is 5.5 (90% confidence), including systematics. Our source detection method improves on that used in previous X-ray Telescope (XRT) catalogs and we report greater than 68,000 new X-ray sources. The goals and observing strategy of the Swift satellite allow us to probe source variability on multiple timescales, and we find approximately 30,000 variable objects in our catalog. For every source we give positions, fluxes, time series (in four energy bands and two hardness ratios), estimates of the spectral properties, spectra and spectral fits for the brightest sources, and variability probabilities in multiple energy bands and timescales.

  12. Analysis of the Federal Cataloging System and COSATI (Committee on Scientific and Technical Information) Cataloging,

    Science.gov (United States)

    2007-11-02

    There are no groups or classes for the broader needs of a research oriented user comunity . For example, in the Federal Catalog System i there are...Selection and Maintenance (Medical). 10 Psychology (Indi- Mental processes and phenomena such as vidual and Group perception, learning , motivation, in

  13. VizieR Online Data Catalog: Fermi LAT third source catalog (3FGL) (Acero+, 2015)

    Science.gov (United States)

    Acero, F.; Ackermann, M.; Ajello, M.; Albert, A.; Atwood, W. B.; Axelsson, M.; Baldini, L.; Ballet, J.; Barbiellini, G.; Bastieri, D.; Belfiore, A.; Bellazzini, R.; Bissaldi, E.; Blandford, R. D.; Bloom, E. D.; Bogart, J. R.; Bonino, R.; Bottacini, E.; Bregeon, J.; Britto, R. J.; Bruel, P.; Buehler, R.; Burnett, T. H.; Buson, S.; Caliandro, G. A.; Cameron, R. A.; Caputo, R.; Caragiulo, M.; Caraveo, P. A.; Casandjian, J. M.; Cavazzuti, E.; Charles, E.; Chaves, R. C. G.; Chekhtman, A.; Cheung, C. C.; Chiang, J.; Chiaro, G.; Ciprini, S.; Claus, R.; Cohen-Tanugi, J.; Cominsky, L. R.; Conrad, J.; Cutini, S.; D'Ammando, F.; de Angelis, A.; Deklotz, M.; de Palma, F.; Desiante, R.; Digel, S. W.; di Venere, L.; Drell, P. S.; Dubois, R.; Dumora, D.; Favuzzi, C.; Fegan, S. J.; Ferrara, E. C.; Finke, J.; Franckowiak, A.; Fukazawa, Y.; Funk, S.; Fusco, P.; Gargano, F.; Gasparrini, D.; Giebels, B.; Giglietto, N.; Giommi, P.; Giordano, F.; Giroletti, M.; Glanzman, T.; Godfrey, G.; Grenier, I. A.; Grondin, M.-H.; Grove, J. E.; Guillemot, L.; Guiriec, S.; Hadasch, D.; Harding, A. K.; Hays, E.; Hewitt, J. W.; Hill, A. B.; Horan, D.; Iafrate, G.; Jogler, T.; Johannesson, G.; Johnson, R. P.; Johnson, A. S.; Johnson, T. J.; Johnson, W. N.; Kamae, T.; Kataoka, J.; Katsuta, J.; Kuss, M.; La Mura, G.; Landriu, D.; Larsson, S.; Latronico, L.; Lemoine-Goumard, M.; Li, J.; Li, L.; Longo, F.; Loparco, F.; Lott, B.; Lovellette, M. N.; Lubrano, P.; Madejski, G. M.; Massaro, F.; Mayer, M.; Mazziotta, M. N.; McEnery, J. E.; Michelson, P. F.; Mirabal, N.; Mizuno, T.; Moiseev, A. A.; Mongelli, M.; Monzani, M. E.; Morselli, A.; Moskalenko, I. V.; Murgia, S.; Nuss, E.; Ohno, M.; Ohsugi, T.; Omodei, N.; Orienti, M.; Orlando, E.; Ormes, J. F.; Paneque, D.; Panetta, J. H.; Perkins, J. S.; Pesce-Rollins, M.; Piron, F.; Pivato, G.; Porter, T. A.; Racusin, J. L.; Rando, R.; Razzano, M.; Razzaque, S.; Reimer, A.; Reimer, O.; Reposeur, T.; Rochester, L. S.; Romani, R. W.; Salvetti, D.; Sanchez-Conde, M.; Saz Parkinson, P. M.; Schulz, A.; Siskind, E. J.; Smith, D. A.; Spada, F.; Spandre, G.; Spinelli, P.; Stephens, T. E.; Strong, A. W.; Suson, D. J.; Takahashi, H.; Takahashi, T.; Tanaka, Y.; Thayer J. G, .; Thayer, J. B.; Thompson, D. J.; Tibaldo, L.; Tibolla, O.; Torres, D. F.; Torresi, E.; Tosti, G.; Troja, E.; van Klaveren, B.; Vianello, G.; Winer, B. L.; Wood, K. S.; Wood, M.; Zimmer, S.

    2015-08-01

    The data for the 3FGL catalog were taken during the period from 2008 August 4 (15:43 UTC) to 2012 July 31 (22:46 UTC), to covering close to 4yr. The LAT detects γ-rays in the energy range from 20MeV to more than 300GeV. (3 data files).

  14. THE VLA NASCENT DISK AND MULTIPLICITY (VANDAM) SURVEY OF PERSEUS PROTOSTARS. RESOLVING THE SUB-ARCSECOND BINARY SYSTEM IN NGC 1333 IRAS2A

    Energy Technology Data Exchange (ETDEWEB)

    Tobin, John J.; Looney, Leslie W. [National Radio Astronomy Observatory, Charlottesville, VA 22903 (United States); Dunham, Michael M. [Harvard-Smithsonian Center for Astrophysics, Cambridge, MA 02138 (United States); Li, Zhi-Yun [Department of Astronomy, University of Virginia, Charlottesville, VA 22903 (United States); Chandler, Claire J.; Perez, Laura M. [National Radio Astronomy Observatory, Socorro, NM 87801 (United States); Segura-Cox, Dominique; Harris, Robert J.; Hull, Charles L. H. [Department of Astronomy, University of Illinois, Urbana, IL 61801 (United States); Sadavoy, Sarah I. [Max-Planck-Institut für Astronomie, D-69117 Heidelberg (Germany); Melis, Carl [Center for Astrophysics and Space Sciences, University of California, San Diego, CA 92093 (United States); Kratter, Kaitlin [Steward Observatory, University of Arizona, Tucson, AZ 85721 (United States); Jørgensen, Jes K. [Niels Bohr Institute, University of Copenhagen, Juliane Maries Vej 30, DK-2100 Copenhagen Ø. (Denmark); Plunkett, Adele L., E-mail: jtobin@nrao.edu, E-mail: jeskj@nbi.dk [Department of Astronomy, Yale University, New Haven, CT 06520 (United States)

    2015-01-01

    We are conducting a Jansky Very Large Array (VLA) Ka-band (8 mm and 1 cm) and C-band (4 cm and 6.4 cm) survey of all known protostars in the Perseus Molecular Cloud, providing resolution down to ∼0.''06 and ∼0.''35 in the Ka band and C band, respectively. Here we present first results from this survey that enable us to examine the source NGC 1333 IRAS2A in unprecedented detail and resolve it into a protobinary system separated by 0.''621 ± 0.''006 (∼143 AU) at 8 mm, 1 cm, and 4 cm. These two sources (IRAS2A VLA1 and VLA2) are likely driving the two orthogonal outflows known to originate from IRAS2A. The brighter source IRAS2A VLA1 is extended perpendicular to its outflow in the VLA data, with a deconvolved size of 0.''055 (∼13 AU), possibly tracing a protostellar disk. The recently reported candidate companions (IRAS2A MM2 and MM3) are not detected in either our VLA data, Combined Array for Research in Millimeter-wave Astronomy (CARMA) 1.3 mm data, or Submillimeter Array (SMA) 850 μm data. SMA CO (J = 3 → 2), CARMA CO (J = 2 → 1), and lower-resolution CARMA CO (J = 1 → 0) observations are used to examine the outflow origins and the nature of the candidate companions to IRAS2A VLA1. The CO (J = 3 → 2) and (J = 2 → 1) data show that IRAS2A MM2 is coincident with a bright CO emission spot in the east-west outflow, and IRAS2A MM3 is within the north-south outflow. In contrast, IRAS2A VLA2 lies at the east-west outflow symmetry point. We propose that IRAS2A VLA2 is the driving source of the east-west outflow and a true companion to IRAS2A VLA1, whereas IRAS2A MM2 and MM3 may not be protostellar.

  15. Expresión de ira y violencia escolar : estudio en una muestra de alumnos de E.S.O. de la región de Murcia

    OpenAIRE

    Muñoz Olmos, José Vicente

    2015-01-01

    El objetivo general de este estudio transversal es conocer la relación entre las distintas formas de expresión de ira y los procesos de violencia y victimización en el contexto escolar. Objetivos específicos 1. Analizar las propiedades psicométricas de la escala de expresión de ira incluida en el cuestionario sobre violencia escolar. 2. Analizar la relación de la ira y sus diferentes formas de expresión con el sexo, curso escolar y el número de hermanos/as. 3. Analizar la relación entre las d...

  16. Konus catalog of SGR activity to 2000

    CERN Document Server

    Aptekar, R L; Golenetskii, S V; Ilinskii, V N; Mazets, E P; Palshin, V D; Butterworth, P S; Cline, T L

    2000-01-01

    Observational data on the bursting activity of all five known Soft Gamma Repeaters are presented. This information was obtained with Konus gamma-ray burst experiments on board Venera 11-14, Wind, and Kosmos-2326 spacecraft in the period from 1978 to 2000. These data on appearance rates, time histories, and energy spectra of repeated soft bursts obtained with similar instruments and collected together in a comparable form should be useful for further studies of SGRs. (available at http://www.ioffe.rssi.ru/LEA/SGR/Catalog/).

  17. Evaluation and cataloging of Korean historical earthquakes

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Kew Hwa; Han, Young Woo; Lee, Jun Hui; Park, Ji Eok; Na, Kwang Wooing; Shin, Byung Ju [The Reaearch Institute of Basic Sciences, Seoul Nationl Univ., Seoul (Korea, Republic of)

    1999-03-15

    Historical earthquake data of the Korean Peninsula which are very important is evaluating seismicity and seismic hazard of the peninsula were collected and analyzed by seismologist and historian. A preliminary catalog of Korean historical earthquake data translated in English was made. Felt places of 528 events felt at more than 2 places were indicated on maps and MMI III isoseismal were drawn for 52 events of MMI{>=}VII. Epicenters and intensities of these MMI{>=}VII events were estimated from these isoseismal maps.

  18. Planck intermediate results XXIX. All-sky dust modelling with Planck, IRAS, and WISE observations

    DEFF Research Database (Denmark)

    Ade, P. A. R.; Aghanim, N.; Alves, M. I. R.

    2016-01-01

    . The present work extends the DL dust modelling carried out on nearby galaxies using Herschel and Spitzer data to Galactic dust emission. We employ the DL dust model to generate maps of the dust mass surface density Sigma(Md), the dust optical extinction A(V), and the starlight intensity heating the bulk......We present all-sky modelling of the high resolution Planck, IRAS, andWISE infrared (IR) observations using the physical dust model presented by Draine & Li in 2007 (DL, ApJ, 657, 810). We study the performance and results of this model, and discuss implications for future dust modelling...... of the dust, parametrized by U-min. The DL model reproduces the observed spectral energy distribution (SED) satisfactorily over most of the sky, with small deviations in the inner Galactic disk and in low ecliptic latitude areas, presumably due to zodiacal light contamination. In the Andromeda galaxy (M31...

  19. A Radio Spectral Line Study of the 2-Jy IRAS-NVSS Sample: Part I

    CERN Document Server

    Fernandez, Maria Ximena; Salter, Christopher J; Ghosh, Tapasi

    2010-01-01

    We present results from an on-going survey for the HI 21 cm line and the OH 18 cm lines in IR galaxies with the Arecibo 305 m Radio Telescope. The observations of 85 galaxies extracted from the 2 Jy IRAS-NVSS sample in the R.A. (B1950) range 20 h-00 h are reported in this paper. We detected the HI 21 cm line in 82 of these galaxies, with 18 being new detections, and the OH 18 cm lines in 7 galaxies, with 4 being new detections. In some cases, the HI spectra show the classic double-horned or single-peaked emission profiles. However, the majority exhibit distorted HI spectral features indicating that the galaxies are in interacting and/or merging systems. From these HI and OH observations, various properties of the sample are derived and reported.

  20. The Motion of Water Masers in the Pre-Planetary Nebula IRAS 16342-3814

    CERN Document Server

    Claussen, M J; Morris, M R

    2008-01-01

    We present high angular resolution observations, using the Very Long Baseline Array (VLBA) of the NRAO, of the high-velocity water masers toward the "water-fountain" pre-planetary nebula, IRAS 16342-3814. The detailed structure of the water masers appears to be that of bow shocks on either side of a highly collimated jet. The proper motions of the water masers are approximately equal to the radial velocities; the three-dimensional velocities are approximately +/-180 km/s, which leads to a very short dynamical time-scale of ~100 years. Although we do not find direct evidence for precession of the fast collimated jet, there may be indirect evidence for such precession.

  1. Revealing the ultrafast outflow in IRAS 13224-3809 through spectral variability

    Science.gov (United States)

    Parker, M. L.; Alston, W. N.; Buisson, D. J. K.; Fabian, A. C.; Jiang, J.; Kara, E.; Lohfink, A.; Pinto, C.; Reynolds, C. S.

    2017-08-01

    We present an analysis of the long-term X-ray variability of the extreme narrow-line Seyfert 1 galaxy IRAS 13224-3809 using principal component analysis (PCA) and fractional excess variability (Fvar) spectra to identify model-independent spectral components. We identify a series of variability peaks in both the first PCA component and Fvar spectrum which correspond to the strongest predicted absorption lines from the ultrafast outflow (UFO) discovered by Parker et al. (2017). We also find higher order PCA components, which correspond to variability of the soft excess and reflection features. The subtle differences between RMS and PCA results argue that the observed flux-dependence of the absorption is due to increased ionization of the gas, rather than changes in column density or covering fraction. This result demonstrates that we can detect outflows from variability alone and that variability studies of UFOs are an extremely promising avenue for future research.

  2. The census of complex organic molecules in the solar type protostar IRAS16293-2422

    CERN Document Server

    Jaber, Ali A; Kahane, C; Caux, E

    2014-01-01

    Complex Organic Molecules (COMs) are considered crucial molecules, since they are connected with organic chemistry, at the basis of the terrestrial life. More pragmatically, they are molecules in principle difficult to synthetize in the harsh interstellar environments and, therefore, a crucial test for astrochemical models. Current models assume that several COMs are synthesised on the lukewarm grain surfaces ($\\gtrsim$30-40 K), and released in the gas phase at dust temperatures $\\gtrsim$100 K. However, recent detections of COMs in $\\lesssim$20 K gas demonstrate that we still need important pieces to complete the puzzle of the COMs formation. We present here a complete census of the oxygen and nitrogen bearing COMs, previously detected in different ISM regions, towards the solar type protostar IRAS16293-2422. The census was obtained from the millimeter-submillimeter unbiased spectral survey TIMASSS. Six COMs, out of the 29 searched for, were detected: methyl cyanide, ketene, acetaldehyde, formamide, dimethyl ...

  3. An accretion disks in the high-mass star forming region IRA 23151+5912

    Science.gov (United States)

    Migenes, Victor; Rodríguez-Esnard, T.; Trinidad, M. A.

    2014-01-01

    We present observations of radio continuum emission at 1.3 and 3.6 cm and H2O masers toward the high-mass star-forming regions IRA 23151+5912 carried out with the VLA-EVLA. We detected one continuum source at 1.3 cm and 13 water maser spots which are distributed in three groups aligned along the northeast-southwest direction. Our results suggest that the 1.3 cm emission is consistent with an HC HII region, probably with an embedded zero-age main sequence star of type B2. In particular, we find that this radio continuum source is probably associated with a circumstellar disk of about 68 AU, as traced by water masers. Furthermore, the masers of the second group are probably describing another circumstellar disk of about 86 AU, whose central protostar is still undetected. We discuss this results in the light of more recent high-resolution observations.

  4. Characterization data of gilthead sea bream (Sparus aurata) IGF-I receptors (IGF-IRa/Rb).

    Science.gov (United States)

    Vélez, Emilio J; Azizi, Sheida; Salmerón, Cristina; Chan, Shu Jin; Nematollahi, Mohammad Ali; Amiri, Bagher Mojazi; Navarro, Isabel; Capilla, Encarnación; Gutiérrez, Joaquim

    2016-03-01

    In this data article we describe the coding sequence of two IGF-IR paralogues (IGF-IRa and IGF-IRb) obtained from gilthead sea bream embryos. The putative protein architecture (domains and other important motifs) was determined and, amino acid sequences alignment and phylogenetic analysis of both receptors together with IGF-IR orthologues from different vertebrates was performed. Additionally, a semi-quantitative conventional PCR was done to analyze the mRNA expression of both receptors in different tissues of gilthead sea bream. These data will assist in further physiological studies in this species. In this sense, the expression of both receptors during ontogeny in muscle as well as the differential effects of IGF-I and IGF-II on their regulation during in vitro myogenesis has been recently studied (doi: 10.1016/j.ygcen.2015.11.011; [1]).

  5. An IRAS/ISSA Survey of Bow Shocks Around Runaway Stars

    Science.gov (United States)

    van Buren, Dave; Noriega-Crespo, Alberto; Dgani, Ruth

    1995-12-01

    We searched the IRAS data for bow shock-like objects like those known around ζ Oph and α Cam near the positions of 188 runaway stars. Based primarily on the presence and morphology of excess 60 μm emission we identify 58 candidate bow shocks, for which we determine photometric and morphological parameters. Previously only a dozen or so were known. Well-resolved structures are present around 25 stars. A comparison of the distribution of symmetry axes of the infrared nebulae with the proper motions of the stars indicate the two directions are very significantly aligned. The observed alignment strongly suggests that the structures we see arise from the interaction of stellar winds with the interstellar medium, justifying the identification of these far-infrared objects as stellar wind bow shocks.

  6. Characterization data of gilthead sea bream (Sparus aurata IGF-I receptors (IGF-IRa/Rb

    Directory of Open Access Journals (Sweden)

    Emilio J. Vélez

    2016-03-01

    Full Text Available In this data article we describe the coding sequence of two IGF-IR paralogues (IGF-IRa and IGF-IRb obtained from gilthead sea bream embryos. The putative protein architecture (domains and other important motifs was determined and, amino acid sequences alignment and phylogenetic analysis of both receptors together with IGF-IR orthologues from different vertebrates was performed. Additionally, a semi-quantitative conventional PCR was done to analyze the mRNA expression of both receptors in different tissues of gilthead sea bream. These data will assist in further physiological studies in this species. In this sense, the expression of both receptors during ontogeny in muscle as well as the differential effects of IGF-I and IGF-II on their regulation during in vitro myogenesis has been recently studied (doi: 10.1016/j.ygcen.2015.11.011; [1].

  7. New high-velocity bipolar outflows in S39 and IRAS 06306+0232

    Institute of Scientific and Technical Information of China (English)

    QIN; Shengli(秦胜利); WU; Yuefang(吴月芳)

    2002-01-01

    Mapping observations in 12CO J = 1 - 0 lines were made towards S39 and IRAS 06306+0232 with the 13.7 m radio telescope at Qinghai Station of Purple Mountain Observatory. The results showed that both of them have bipolar outflows. We have calculated the outflow parameters. The outflows have significantly more mass and higher mass loss rate than those from Iow mass YSOs. We also find that although the bolometric luminosities of the associated sources are large, the radiation pressure of wind is not sufficient to drive the observed outflows. There exist several stars of different evolve states in S39. It suggests that the star formation in S39 is in sequence, not in eruption.

  8. VizieR Online Data Catalog: The Washington Visual Double Star Catalog (Mason+ 2001-2014)

    Science.gov (United States)

    Mason, B. D.; Wycoff, G. L.; Hartkopf, W. I.; Douglass, G. G.; Worley, C. E.

    2017-02-01

    The Washington Visual Double Star Catalog (WDS) is the successor to the Index Catalogue of Visual Double Stars, 1961.0 (IDS; Jeffers and van den Bos, Publ. Lick Obs. 21). Three earlier double star catalogs in XXth century, those by Burnham (BDS, 1906, "General Catalogue of Double Stars within 121 degrees of the North Pole", Carnegie Institution of Washington), Innes (SDS, 1927, "Southern Double Star Catalogue -19 to -90 degrees", Union Observatory, Johannesburg, South Africa), and Aitken (ADS, 1932 "New General Catalogue of Double Stars within 121 degrees of the North Pole", Carnegie Institution of Washington), each covered only a portion of the sky. Both the IDS and the WDS cover the entire sky, and the WDS is intended to contain all known visual double stars for which at least one differential measure has been published. The WDS is continually updated as published data become available. Prior to this, three major updates have been published (Worley and Douglass 1984, "Washington Visual Double Star Catalog, 1984.0", U.S. Naval Observatory, Washington; Worley and Douglass 1997A&AS..125..523W, Cat. I/237; Mason, Wycoff, Hartkopf, Douglass and Worley 2001AJ....122.3466M; and Mason et al. 2006.5). The Washington Double Star Catalog (WDS) has seen numerous changes since the last major release of the catalog. The application of many techniques and considerable industry over the past few years has yielded significant gains in both the number of systems and the number of measures. Is is maintained by the US Naval Observatory, and represents the world's principal database of astrometric double and multiple star information. The WDS contains positions (J2000), discoverer designations, epochs, position angles, separations, magnitudes, spectral types, proper motions, and, when available, Durchmusterung numbers and notes for the components of the systems. (3 data files).

  9. C 3, A Command-line Catalog Cross-match Tool for Large Astrophysical Catalogs

    Science.gov (United States)

    Riccio, Giuseppe; Brescia, Massimo; Cavuoti, Stefano; Mercurio, Amata; di Giorgio, Anna Maria; Molinari, Sergio

    2017-02-01

    Modern Astrophysics is based on multi-wavelength data organized into large and heterogeneous catalogs. Hence, the need for efficient, reliable and scalable catalog cross-matching methods plays a crucial role in the era of the petabyte scale. Furthermore, multi-band data have often very different angular resolution, requiring the highest generality of cross-matching features, mainly in terms of region shape and resolution. In this work we present C 3 (Command-line Catalog Cross-match), a multi-platform application designed to efficiently cross-match massive catalogs. It is based on a multi-core parallel processing paradigm and conceived to be executed as a stand-alone command-line process or integrated within any generic data reduction/analysis pipeline, providing the maximum flexibility to the end-user, in terms of portability, parameter configuration, catalog formats, angular resolution, region shapes, coordinate units and cross-matching types. Using real data, extracted from public surveys, we discuss the cross-matching capabilities and computing time efficiency also through a direct comparison with some publicly available tools, chosen among the most used within the community, and representative of different interface paradigms. We verified that the C 3 tool has excellent capabilities to perform an efficient and reliable cross-matching between large data sets. Although the elliptical cross-match and the parametric handling of angular orientation and offset are known concepts in the astrophysical context, their availability in the presented command-line tool makes C 3 competitive in the context of public astronomical tools.

  10. VizieR Online Data Catalog: The Washington Visual Double Star Catalog (Mason+ 2001-2014)

    Science.gov (United States)

    Mason, B. D.; Wycoff, G. L.; Hartkopf, W. I.; Douglass, G. G.; Worley, C. E.

    2016-10-01

    The Washington Visual Double Star Catalog (WDS) is the successor to the Index Catalogue of Visual Double Stars, 1961.0 (IDS; Jeffers and van den Bos, Publ. Lick Obs. 21). Three earlier double star catalogs in XXth century, those by Burnham (BDS, 1906, "General Catalogue of Double Stars within 121 degrees of the North Pole", Carnegie Institution of Washington), Innes (SDS, 1927, "Southern Double Star Catalogue -19 to -90 degrees", Union Observatory, Johannesburg, South Africa), and Aitken (ADS, 1932 "New General Catalogue of Double Stars within 121 degrees of the North Pole", Carnegie Institution of Washington), each covered only a portion of the sky. Both the IDS and the WDS cover the entire sky, and the WDS is intended to contain all known visual double stars for which at least one differential measure has been published. The WDS is continually updated as published data become available. Prior to this, three major updates have been published (Worley and Douglass 1984, "Washington Visual Double Star Catalog, 1984.0", U.S. Naval Observatory, Washington; Worley and Douglass 1997A&AS..125..523W, Cat. I/237; Mason, Wycoff, Hartkopf, Douglass and Worley 2001AJ....122.3466M; and Mason et al. 2006.5). The Washington Double Star Catalog (WDS) has seen numerous changes since the last major release of the catalog. The application of many techniques and considerable industry over the past few years has yielded significant gains in both the number of systems and the number of measures. Is is maintained by the US Naval Observatory, and represents the world's principal database of astrometric double and multiple star information. The WDS contains positions (J2000), discoverer designations, epochs, position angles, separations, magnitudes, spectral types, proper motions, and, when available, Durchmusterung numbers and notes for the components of the systems. (3 data files).

  11. VizieR Online Data Catalog: Hubble Source Catalog (V1 and V2) (Whitmore+, 2016)

    Science.gov (United States)

    Whitmore, B. C.; Allam, S. S.; Budavari, T.; Casertano, S.; Downes, R. A.; Donaldson, T.; Fall, S. M.; Lubow, S. H.; Quick, L.; Strolger, L.-G.; Wallace, G.; White, R. L.

    2016-10-01

    The HSC v1 contains members of the WFPC2, ACS/WFC, WFC3/UVIS and WFC3/IR Source Extractor source lists from HLA version DR8 (data release 8). The crossmatching process involves adjusting the relative astrometry of overlapping images so as to minimize positional offsets between closely aligned sources in different images. After correction, the astrometric residuals of crossmatched sources are significantly reduced, to typically less than 10mas. The relative astrometry is supported by using Pan-STARRS, SDSS, and 2MASS as the astrometric backbone for initial corrections. In addition, the catalog includes source nondetections. The crossmatching algorithms and the properties of the initial (Beta 0.1) catalog are described in Budavari & Lubow (2012ApJ...761..188B). The HSC v2 contains members of the WFPC2, ACS/WFC, WFC3/UVIS and WFC3/IR Source Extractor source lists from HLA version DR9.1 (data release 9.1). The crossmatching process involves adjusting the relative astrometry of overlapping images so as to minimize positional offsets between closely aligned sources in different images. After correction, the astrometric residuals of crossmatched sources are significantly reduced, to typically less than 10mas. The relative astrometry is supported by using Pan-STARRS, SDSS, and 2MASS as the astrometric backbone for initial corrections. In addition, the catalog includes source nondetections. The crossmatching algorithms and the properties of the initial (Beta 0.1) catalog are described in Budavari & Lubow (2012ApJ...761..188B). Hubble Source Catalog Acknowledgement: Based on observations made with the NASA/ESA Hubble Space Telescope, and obtained from the Hubble Legacy Archive, which is a collaboration between the Space Telescope Science Institute (STScI/NASA), the Space Telescope European Coordinating Facility (ST-ECF/ESAC/ESA) and the Canadian Astronomy Data Centre (CADC/NRC/CSA). (2 data files).

  12. The Physical Environment around IRAS 17599-2148: Infrared Dark Cloud and Bipolar Nebula

    Science.gov (United States)

    Dewangan, L. K.; Ojha, D. K.; Zinchenko, I.; Janardhan, P.; Ghosh, S. K.; Luna, A.

    2016-12-01

    We present a multiscale and multiwavelength study to investigate the star formation process around IRAS 17599-2148, which is part of an elongated filamentary structure (EFS) (extension ˜21 pc) seen in the Herschel maps. Using the Herschel data analysis, at least six massive clumps (M clump ˜ 777-7024 M ⊙) are found in the EFS with a range of temperature and column density of ˜16-39 K and ˜(0.6-11) × 1022 cm-2 (A V ˜ 7-117 mag), respectively. The EFS hosts cold gas regions (i.e., infrared dark cloud) without any radio detection and a bipolar nebula (BN) linked with the H ii region IRAS 17599-2148, tracing two distinct environments inferred through the temperature distribution and ionized emission. Based on virial analysis and higher values of self-gravitating pressure, the clumps are found unstable against gravitational collapse. We find 474 young stellar objects (YSOs) in the selected region, and ˜72% of these YSOs are found in the clusters distributed mainly toward the clumps in the EFS. These YSOs might have spontaneously formed due to processes not related to the expanding H ii region. At the edges of BN, four additional clumps are also associated with YSO clusters, which appear to be influenced by the expanding H ii region. The most massive clump in the EFS contains two compact radio sources traced in the Giant Metre-wave Radio Telescope 1.28 GHz map and a massive protostar candidate, IRS 1, prior to an ultracompact H ii phase. Using the Very Large Telescope/NACO near-infrared images, IRS 1 is resolved with a jet-like feature within a 4200 au scale.

  13. OBSERVATIONAL STUDY OF THE CONTINUUM AND WATER MASER EMISSION IN THE IRAS 19217+1651 REGION

    Energy Technology Data Exchange (ETDEWEB)

    Rodriguez-Esnard, T.; Trinidad, M. A. [Departamento de Astronomia, Universidad de Guanajuato, Apdo Postal 144, Guanajuato, GTO, Mexico CP 36000 (Mexico); Migenes, V., E-mail: tatiana@iga.cu, E-mail: trinidad@astro.ugto.mx, E-mail: vmigenes@byu.edu [Department of Physics and Astronomy, Brigham Young University, ESC-N145, Provo, UT 84602 (United States)

    2012-12-20

    We report interferometric observations of the high-mass star-forming region IRAS 19217+1651. We observed the radio continuum (1.3 cm and 3.6 cm) and water maser emission using the Very Large Array (VLA-EVLA) in transition mode (configuration A). Two radio continuum sources were detected at both wavelengths, I19217-A and I19217-B. In addition, 17 maser spots were observed distributed mainly in two groups, M1 and M2, and one isolated maser. This latter could be indicating the relative position of another continuum source which we did not detect. The results indicate that I19217-A appears to be consistent with an ultracompact H II region associated with a zero-age main-sequence B0-type star. Furthermore, the 1.3 cm continuum emission of this source suggests a cometary morphology. In addition, I19217-B appears to be an H II region consisting of at least two stars, which may be contributing to its complex structure. It was also found that the H{sub 2}O masers of the group M1 are apparently associated with the continuum source I19217-A. These are tracing motions which are not gravitationally bound according to their spatial distribution and kinematics. They also seem to be describing outflows in the direction of the elongated cometary region. On the other hand, the second maser group, M2, could be tracing the base of a jet. Finally, infrared data from Spitzer, Midcourse Space Experiment, and IRIS show that IRAS 19217+1651 is embedded inside a large open bubble, like a broken ring, which possibly has affected the morphology of the cometary H II region observed at 1.3 cm.

  14. SMA Observations of the Hot Molecular Core IRAS 18566+0408

    Science.gov (United States)

    Silva, Andrea; Zhang, Qizhou; Sanhueza, Patricio; Lu, Xing; Beltran, Maria T.; Fallscheer, Cassandra; Beuther, Henrik; Sridharan, T. K.; Cesaroni, Riccardo

    2017-10-01

    We present Submillimeter Array (SMA) observations toward the high-mass star-forming region IRAS 18566+0408. Observations at the 1.3 mm continuum and in several molecular line transitions were performed in the compact (2.″4 angular resolution) and very-extended (∼0.″4 angular resolution) configurations. The continuum emission from the compact configuration shows a dust core of 150 M ⊙, while the very-extended configuration reveals a dense (2.6 × 107 cm‑3) and compact (∼4000 au) condensation of 8 M ⊙. We detect 31 molecular transitions from 14 species including CO isotopologues, SO, CH3OH, OCS, and CH3CN. Using the different k-ladders of the CH3CN line, we derive a rotational temperature at the location of the continuum peak of 240 K. The {}12{CO}(2-1), {}13{CO}(2-1), and {SO}({6}5{--}{5}4) lines reveal a molecular outflow at PA ∼ 135° centered at the continuum peak. The extended {}12{CO}(2-1) emission has been recovered with the IRAM 30 m telescope observations. Using the combined data set, we derive an outflow mass of 16.8 M ⊙. The chemically rich spectrum and the high rotational temperature confirm that IRAS 18566+0408 is harboring a hot molecular core. We find no clear velocity gradient that could suggest the presence of a rotational disk-like structure, even at the high-resolution observations obtained with the very-extended configuration.

  15. The fast, massive outflow of the pre-planetary nebula IRAS 19374+2356

    Science.gov (United States)

    Sánchez Contreras, C.; Martin, S.; Sahai, R.

    2013-05-01

    At some point in the late-AGB stage, a process (or processes) becomes operative that accelerates and imposes bipolarity upon the slow, spherical AGB winds. What produces bipolarity in these objects and at what stage does bipolarity manifest itself are key questions that remain yet poorly understood. We present CO (115 & 230 GHz) emission maps of IRAS19374+2359, an extreme pre-PN with an unparalleledly massive, fast molecular outflow discovered in our OVRO Post-AGB CO 1-0 emission Survey (referred to as OPACOS; Sánchez Contreras & Sahai 2012, ApJS, 203, 16). We present sub-arcsecond resolution ^{(12,13)}CO 2-1 and 1.3 mm-continuum interferometric maps recently obtained with the Submillimeter Array (SMA) together with our discovery ˜8s-resolution ^{(12,13)}CO 1-0 OVRO data. The prominent ˜300 km s^{-1}-broad wings and the lack of an intense, low-velocity CO line core in IRAS 19374 indicate that most or all of the molecular gas participates in the high-velocity flow. From our CO data, we estimate a total mass in the molecular outflow of ˜ 1 msun and an unprecedentedly large value for the linear momemtum carried of ≥ 45 msun km s^{-1}. Our SMA maps show CO emission arising from a ˜3s×2s hourglass-shaped molecular flow aligned with the optical lobes; a linear velocity gradient along the lobes as well as equatorial expansion at the nebula waist are found. The spatio-kinematic structure of this object is in support of a jet-envelope entrainment scenario in which a substantial amount of directed momentum is transferred to large parts of the dense AGB wind by interaction with fast, collimated post-AGB jets.

  16. Extinction and Polycyclic Aromatic Hydrocarbon Intensity Variations across the H II Region IRAS 12063-6259

    Science.gov (United States)

    Stock, D. J.; Peeters, E.; Tielens, A. G. G. M.; Otaguro, J. N.; Bik, A.

    2013-07-01

    The spatial variations in polycyclic aromatic hydrocarbon (PAH) band intensities are normally attributed to the physical conditions of the emitting PAHs, however in recent years it has been suggested that such variations are caused mainly by extinction. To resolve this question, we have obtained near-infrared (NIR), mid-infrared (MIR), and radio observations of the compact H II region IRAS 12063-6259. We use these data to construct multiple independent extinction maps and also to measure the main PAH features (6.2, 7.7, 8.6, and 11.2 μm) in the MIR. Three extinction maps are derived: the first using the NIR hydrogen lines and case B recombination theory; the second combining the NIR data with radio data; and the third making use of the Spitzer/IRS MIR observations to measure the 9.8 μm silicate absorption feature using the Spoon method and PAHFIT (as the depth of this feature can be related to overall extinction). The silicate absorption over the bright, southern component of IRAS 12063-6259 is almost absent while the other methods find significant extinction. While such breakdowns of the relationship between the NIR extinction and the 9.8 μm absorption have been observed in molecular clouds, they have never been observed for H II regions. We then compare the PAH intensity variations in the Spitzer/IRS data after dereddening to those found in the original data. It was found that in most cases, the PAH band intensity variations persist even after dereddening, implying that extinction is not the main cause of the PAH band intensity variations.

  17. Extinction and PAH intensity variations across the HII region IRAS 12063-6259

    Science.gov (United States)

    Stock, D.; Peeters, E.; Tielens, X.; Otaguro, J.; Bik, A.

    The spatial variations in polycyclic aromatic hydrocarbon (PAH) band intensities are generally attributed to variations of the physical conditions in the environment hosting the emitting PAH molecules. However, in recent years, it has been suggested that such variations are caused mainly by extinction. To resolve this question, we have obtained near-infrared (NIR), mid-infrared (MIR) and radio observations of the compact HII region IRAS 12063-6259. We use these data to construct multiple independent extinction maps and to measure the main PAH feature intensities (6.2, 7.7, 8.6 and 11.2 µ m). Three extinction maps are derived: the first using the NIR hydrogen lines and case B recombination theory; the second combining the NIR data, radio data and case B recombination; and the third making use of the Spitzer/IRS MIR observations to measure the 9.8 µ m silicate absorption feature intensity using the Spoon method and PAHFIT. We conclude that different areas of IRAS 12063-6259 possess markedly different extinction properties, with some regions displaying both silicate absorption and corresponding NIR extinction, and other regions displaying NIR extinction and no corresponding silicate absorption. While such breakdowns of the relationship between the NIR extinction and the silicate absorption strength have been observed in molecular clouds, they have never been observed for HII regions. We then compare the PAH intensity variations in the Spitzer/IRS data after dereddening to those found in the original data. Generally it was found that the PAH band intensity variations persist even after dereddening, implying that extinction is not the main cause of the PAH band intensity variations.

  18. The circumstellar environment of IRAS 16293-2422. ISO-LWS and SCUBA observations

    Science.gov (United States)

    Correia, J. C.; Griffin, M.; Saraceno, P.

    2004-05-01

    We present far-infrared (FIR) continuum observations of the deeply embedded source IRAS 16293-2422 performed with the Long Wavelength Spectrometer (LWS) on-board the Infrared Space Observatory (ISO). We also report 450 and 850 μm mapping observations done with the Submillimetre Common-User Bolometer Array (SCUBA) at the James Clerk Maxwell Telescope (JCMT). We combined these observations with IRAS and other JCMT data available in the literature to construct a complete spectral energy distribution (SED) of the source. A spherically symmetric dusty envelope model was used to reproduce the SED and to characterize the circumstellar matter around the object. We call attention to the fact that when using models such as the one presented here, one needs spatial information about the object to distinguish between different possible fits to the SED. A comparison between the intensity profiles at 450 and 850 μm obtained from the SCUBA observations and the profiles predicted by the model allowed us to constrain the size of the envelope and its density distribution. The SED and the 850 μm intensity profile of the source are consistent with a centrally peaked power law dust density distribution of the form ρ(r) ∝ r-p with p = 1.5-2, with a radius Renv = 3000-3250 AU, defining a very compact circumstellar envelope. We estimate a bolometric luminosity Lbol = 36 L⊙, an envelope mass Menv = 3.4 M⊙, and a submillimetre to bolometric luminosity ratio Lsubmm/Lbol = 1.9%, confirming that the source shows a submillimetre excess characteristic of Class 0 sources.

  19. The Census of Complex Organic Molecules in the Solar-type Protostar IRAS16293-2422

    Science.gov (United States)

    Jaber, Ali A.; Ceccarelli, C.; Kahane, C.; Caux, E.

    2014-08-01

    Complex organic molecules (COMs) are considered to be crucial molecules, since they are connected with organic chemistry, at the basis of terrestrial life. More pragmatically, they are molecules which in principle are difficult to synthesize in harsh interstellar environments and, therefore, are a crucial test for astrochemical models. Current models assume that several COMs are synthesized on lukewarm grain surfaces (gsim30-40 K) and released in the gas phase at dust temperatures of gsim100 K. However, recent detections of COMs in lsim20 K gas demonstrate that we still need important pieces to complete the puzzle of COMs formation. Here, we present a complete census of the oxygen- and nitrogen-bearing COMs, previously detected in different Interstellar Medium (ISM) regions, toward the solar-type protostar IRAS16293-2422. The census was obtained from the millimeter-submillimeter unbiased spectral survey TIMASSS. Of the 29 COMs searched for, 6 were detected: methyl cyanide, ketene, acetaldehyde, formamide, dimethyl ether, and methyl formate. Multifrequency analysis of the last five COMs provides clear evidence that they are present in the cold (lsim30 K) envelope of IRAS16293-2422, with abundances of 0.03-2 × 10-10. Our data do not allow us to support the hypothesis that the COMs abundance increases with increasing dust temperature in the cold envelope, as expected if COMs were predominately formed on lukewarm grain surfaces. Finally, when also considering other ISM sources, we find a strong correlation over five orders of magnitude between methyl formate and dimethyl ether, and methyl formate and formamide abundances, which may point to a link between these two couples of species in cold and warm gas.

  20. The census of complex organic molecules in the solar-type protostar IRAS16293-2422

    Energy Technology Data Exchange (ETDEWEB)

    Jaber, Ali A.; Ceccarelli, C.; Kahane, C. [Université Grenoble Alpes, IPAG, F-38000 Grenoble (France); Caux, E. [Université de Toulouse, UPS-OMP, IRAP, F-31400 Toulouse (France)

    2014-08-10

    Complex organic molecules (COMs) are considered to be crucial molecules, since they are connected with organic chemistry, at the basis of terrestrial life. More pragmatically, they are molecules which in principle are difficult to synthesize in harsh interstellar environments and, therefore, are a crucial test for astrochemical models. Current models assume that several COMs are synthesized on lukewarm grain surfaces (≳30-40 K) and released in the gas phase at dust temperatures of ≳100 K. However, recent detections of COMs in ≲20 K gas demonstrate that we still need important pieces to complete the puzzle of COMs formation. Here, we present a complete census of the oxygen- and nitrogen-bearing COMs, previously detected in different Interstellar Medium (ISM) regions, toward the solar-type protostar IRAS16293-2422. The census was obtained from the millimeter-submillimeter unbiased spectral survey TIMASSS. Of the 29 COMs searched for, 6 were detected: methyl cyanide, ketene, acetaldehyde, formamide, dimethyl ether, and methyl formate. Multifrequency analysis of the last five COMs provides clear evidence that they are present in the cold (≲30 K) envelope of IRAS16293-2422, with abundances of 0.03-2 × 10{sup –10}. Our data do not allow us to support the hypothesis that the COMs abundance increases with increasing dust temperature in the cold envelope, as expected if COMs were predominately formed on lukewarm grain surfaces. Finally, when also considering other ISM sources, we find a strong correlation over five orders of magnitude between methyl formate and dimethyl ether, and methyl formate and formamide abundances, which may point to a link between these two couples of species in cold and warm gas.

  1. Preparative separation of arsenate from phosphate by IRA-400 (OH) for oxygen isotopic work.

    Science.gov (United States)

    Tang, Xiaohui; Berner, Zsolt; Khelashvilli, Pirimze; Norra, Stefan

    2013-02-15

    The paper reports about a series of tests carried out to find out the optimal conditions for the preparative separation of arsenate and phosphate from natural waters, using the anion exchange resin Amberlite IRA-400 (OH). Freundlich isotherms have been constructed on basis of data obtained by stirring different amounts of resin (0.05-1.00 g) with solutions containing 1mg/L As and 10mg/L P in form of arsenate and phosphate and the effect of pH and P/As ratio on adsorption was investigated. It was found that at these concentrations 0.5 g of IRA-400 (OH) can adsorb quantitatively arsenate and phosphate within 1h. In a range of 3.6-11.1, pH seems to have no influence on the adsorption behavior of the resin, but at pH 1.5 the adsorption of both arsenate and phosphate drops to values close to zero. Experiments with solutions with P/As ratios in a range between 1 and 30 have shown that the concentration ratios have also little effect on adsorption. An efficient selective desorption of the anions could be achieved with 2 mol/L HNO3 or HCl, but the use of HCl is impracticable if the separation aims at precipitating arsenate for oxygen isotopic work. The reported adsorption/ desorption properties of the resin are supported also by data obtained by investigating the resin particles with a scanning electron microscope equipped with a fluorescence detection device.

  2. Near-Infrared Observations of the Massive Star Forming Region IRAS 23151+5912

    Institute of Scientific and Technical Information of China (English)

    Xue-Peng Chen; Yong-Qiang Yao

    2004-01-01

    Near-infrared images and K-band spectroscopy of the massive starforming region IRAS 23151+5912 are presented.The JHK' images reveal an embedded infrared cluster associated with infrared nebula,and the H2(2.12μm)narrowband image provides for the first time evidence of outflow activity associated with the cluster.That the cluster is young can be shown by the high percentage of infrared excess sources and the outflow activity.We suggest an age of the cluster of ~ 106 yr.Eight young stars are found in the bright nebular core around IRAS 23151+5912.By the color-magnitude diagrams of the cluster,we found five high-mass YSOs and four intermediate-mass YSOs in the cluster.Eight H2 emission features are discovered in the region with a scattered and non-axisymmetric distribution,indicating the existence of multiple outflows driven by the cluster.Diffuse H2 emission detected to the north and to the west of the cluster may result from UV leakage of the cluster.Brγ,H2,and CIV emission lines are found in the K-band spectrum of the brightest source,NIRS 19,indicating the presence of envelope,stellar wind,and shock in the circumstellar environment.We have estimated an O7-O9spectral type for the central massive YSO(20 ~ 30M⊙),with an age of less than 1×106 yr.

  3. A Cosmic Void Catalog of SDSS DR12 BOSS Galaxies

    CERN Document Server

    Mao, Qingqing; Scherrer, Robert J; Scoccimarro, Roman; Tinker, Jeremy L; McBride, Cameron K; Neyrinck, Mark C; Schneider, Donald P; Pan, Kaike; Bizyaev, Dmitry; Malanushenko, Elena; Malanushenko, Viktor

    2016-01-01

    We present a cosmic void catalog using the large-scale structure galaxy catalog from the Baryon Oscillation Spectroscopic Survey (BOSS). This galaxy catalog is part of the Sloan Digital Sky Survey (SDSS) Data Release 12 and is the final catalog of SDSS-III. We take into account the survey boundaries, masks, and angular and radial selection functions, and apply the ZOBOV void finding algorithm to the galaxy catalog. After making quality cuts to ensure that the voids represent real underdense regions, we identify 1228 voids with effective radii spanning the range 20-100Mpc/h and with central densities that are, on average, 30% of the mean sample density. We discuss the basic statistics of voids, such as their size and redshift distributions, and measure the radial density profile of the voids via a stacking technique. In addition, we construct mock void catalogs from 1000 mock galaxy catalogs, and find that the properties of BOSS voids are in good agreement with those in the mock catalogs. We compare the stella...

  4. The zCOSMOS 20k Group Catalog

    NARCIS (Netherlands)

    Knobel, C.; Lilly, S. J.; Iovino, A.; Kovač, K.; Bschorr, T. J.; Presotto, V.; Oesch, P. A.; Kampczyk, P.; Carollo, C. M.; Contini, T.; Kneib, J. -P; Le Fevre, O.; Mainieri, V.; Renzini, A.; Scodeggio, M.; Zamorani, G.; Bardelli, S.; Bolzonella, M.; Bongiorno, A.; Caputi, K.; Cucciati, O.; de la Torre, S.; de Ravel, L.; Franzetti, P.; Garilli, B.; Lamareille, F.; Le Borgne, J. -F; Le Brun, V.; Maier, C.; Mignoli, M.; Pello, R.; Peng, Y.; Perez Montero, E.; Silverman, J.; Tanaka, M.; Tasca, L.; Tresse, L.; Vergani, D.; Zucca, E.; Barnes, L.; Bordoloi, R.; Cappi, A.; Cimatti, A.; Coppa, G.; Koekemoer, A. M.; López-Sanjuan, C.; McCracken, H. J.; Moresco, M.; Nair, P.; Pozzetti, L.; Welikala, N.

    2012-01-01

    We present an optical group catalog between 0.1 less than or similar to z less than or similar to 1 based on 16,500 high-quality spectroscopic redshifts in the completed zCOSMOS-bright survey. The catalog published herein contains 1498 groups in total and 192 groups with more than five observed memb

  5. A Modern Update and Usage of Historical Variable Star Catalogs

    Science.gov (United States)

    Pagnotta, Ashley; Graur, Or; Murray, Zachary; Kruk, Julia; Christie-Dervaux, Lucien; Chen, Dong Yi

    2015-01-01

    One of the earliest modern variable star catalogs was constructed by Henrietta Swan Leavitt during her tenure at the Harvard College Observatory (HCO) in the early 1900s. Originally published in 1908, Leavitt's catalog listed 1777 variables in the Magellanic Clouds (MCs). The construction and analysis of this catalog allowed her to subsequently discover the Cepheid period-luminosity relationship, now known as the Leavitt Law. The MC variable star catalogs were updated and expanded by Cecilia Payne-Gaposchkin in 1966 and 1971. Although newer studies of the MC variables have been performed since then, the new information has not always been correlated with the old due to a lack of modern descriptors of the stars listed in the Harvard MC catalogs. We will discuss the history of MC variable star catalogs, especially those compiled using the HCO plates, as well as our modernized version of the Leavitt and Payne-Gaposchkin catalogs. Our modern catalog can be used in conjunction with the archival plates (primarily via the Digital Access to a Sky Century @ Harvard scanning project) to study the secular behavior of the MC variable stars over the past century.

  6. Psychology Teaching Resources in the MERLOT Digital Learning Objects Catalog

    Science.gov (United States)

    Brinthaupt, Thomas M.; Pilati, Michelle L.; King, Beverly R.

    2008-01-01

    MERLOT (Multimedia Educational Resource for Learning and Online Teaching) is a free multidisciplinary catalog of digital learning materials, peer reviews, learning assignments, and member comments designed to facilitate faculty instruction. The catalog's goal is to expand the quantity and quality of peer-reviewed online teaching materials. We…

  7. Starting Over: Current Issues in Online Catalog User Interface Design.

    Science.gov (United States)

    Crawford, Walt

    1992-01-01

    Discussion of online catalogs focuses on issues in interface design. Issues addressed include understanding the user base; common user access (CUA) with personal computers; common command language (CCL); hyperlinks; screen design issues; differences from card catalogs; indexes; graphic user interfaces (GUIs); color; online help; and remote users.…

  8. Download - Society Catalog | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data List Contact us Society...le search and download 1 README README_e.html - 2 Society Catalog Information Aca...ut This Database Database Description Download License Update History of This Database Site Policy | Contact Us Download - Society Catalog | LSDB Archive ...

  9. In Celebration: The National Union Catalog, Pre-1956 Imprints.

    Science.gov (United States)

    Cole, John Y., Ed.

    This document contains the principal papers from a 1981 symposium held to celebrate the completion of the 754-volume National Union Catalog, Pre-1956 Imprints. Papers by both those who use the National Union Catalog (NUC) and those who developed it are included. A brief preface describes the mission of the Center for the Book and the purpose of…

  10. NUC: Location or Cataloging Information--A Conflict of Role.

    Science.gov (United States)

    Payne, Eleanor R.

    A catalog committee operating within the University of California library system investigated ways to standardize subject and name entries for the National Union Catalog (NUC). Two sources identified as the contributors of most of the unreliable NUC card copies were research libraries with large special collections requiring expanded or refined…

  11. Treatment of Persian Materials in the National Union Catalog.

    Science.gov (United States)

    Khosh-khui, Abolghasem Z.

    This study investigates the treatment of Persian materials in the National Union Catalog (NUC) using Library of Congress (LC) subject headings. A history and review of the literature on cataloging, classification, and the NUC are provided, and a comparison is made of samples of Persian and American materials in order to determine whether the two…

  12. Cataloging, Processing, Administering AV Materials. A Model for Wisconsin Schools.

    Science.gov (United States)

    Little, Robert D., Ed.

    The objective of this cataloging manual is to recommend specific methods for cataloging audiovisual materials for use in individual school media centers. The following types of audiovisual aids are included: educational games, filmstrips, flat graphics, kits, models, motion pictures, realia, records, slides, sound filmstrips, tapes,…

  13. 16 CFR 305.20 - Paper catalogs and websites.

    Science.gov (United States)

    2010-01-01

    ... 16 Commercial Practices 1 2010-01-01 2010-01-01 false Paper catalogs and websites. 305.20 Section 305.20 Commercial Practices FEDERAL TRADE COMMISSION REGULATIONS UNDER SPECIFIC ACTS OF CONGRESS RULE... Disclosures § 305.20 Paper catalogs and websites. (a) Any manufacturer, distributor, retailer, or...

  14. Psychology Teaching Resources in the MERLOT Digital Learning Objects Catalog

    Science.gov (United States)

    Brinthaupt, Thomas M.; Pilati, Michelle L.; King, Beverly R.

    2008-01-01

    MERLOT (Multimedia Educational Resource for Learning and Online Teaching) is a free multidisciplinary catalog of digital learning materials, peer reviews, learning assignments, and member comments designed to facilitate faculty instruction. The catalog's goal is to expand the quantity and quality of peer-reviewed online teaching materials. We…

  15. VizieR Online Data Catalog: MEXSAS catalogue (Vagnetti+, 2016)

    Science.gov (United States)

    Vagnetti, F.; Middei, R.; Antonucci, M.; Paolillo, M.; Serafinelli, R.

    2016-08-01

    We present the catalog of the Multi-Epoch XMM Serendipitous AGN Sample (MEXSAS), extracted from the fifth release of the XMM-Newton Serendipitous Source Catalogue (XMMSSC-DR5) and cross-matched with the Sloan Digital Sky Survey Quasar catalogs DR7Q and DR12Q. It contains 2700 repeatedly observed AGN, with corrected excess variance information. (1 data file).

  16. Keyword Searching vs. Authority Control in an Online Catalog.

    Science.gov (United States)

    Jamieson, Alexis J.; And Others

    1986-01-01

    Study conducted at the University of Western Ontario explored whether use of keywords of an online catalog would be a satisfactory alternative to self cross referencing for locating variant subject heading forms. Random comparison of machine readable cataloging with Library of Congress authorities demonstrated the desirability of cross reference…

  17. Print and Internet Catalog Shopping: Assessing Attitudes and Intentions.

    Science.gov (United States)

    Vijayasarathy, Leo R.; Jones, Joseph M.

    2000-01-01

    Findings of an empirical study that compared individuals' attitudes and intentions to shop using print and Internet catalogs suggest that individuals perceived differences between the two catalog media on the shopping factors of reliability, tangibility, and consumer risk. Product value, pre-order information, post-selection information, shopping…

  18. The development of online cooperative cataloging in China

    Institute of Scientific and Technical Information of China (English)

    WANG; Jing; XIE; Qinfang; YU; Shuangshuang

    2008-01-01

    In this paper,the authors introduce and analyze the history and current situation of the online cooperative cataloging in China from several perspectives,such as organization models,operation models,service models,quality control,and the cooperation among online cooperative cataloging organizations.

  19. Telecommuting for Original Cataloging at the Michigan State University Libraries.

    Science.gov (United States)

    Black, Leah; Hyslop, Colleen

    1995-01-01

    Working conditions in library technical services departments can be a problem for catalogers in need of a quiet work environment. Based on a successful program for indexers at the National Agriculture Library, a proposal for an experimental telecommuting program for original cataloging at the Michigan State University Libraries was developed and…

  20. A Catalog of the World Xylomyidae (Insecta: Diptera)

    Science.gov (United States)

    The world fauna of Xylomyidae is cataloged, which includes 4 valid genera and 132 species. A phylogenetic analysis is presented which is then formalized in a classification of the family that is used to arrange the catalog. Full taxonomic citations, synonymy and geographic distribution data are pr...

  1. A JEM-X catalog of X-ray sources

    DEFF Research Database (Denmark)

    Westergaard, Niels Jørgen Stenfeldt; Chenevez, Jerome; Lund, Niels;

    2007-01-01

    The JEM-X catalog of X-ray sources presented here is based on detections in individual science windows with a sensitivity limit of about 10 mCrab (5-15 keV). It contains 127 sources and only those that can be identified from the existing reference catalog. The input data are taken from the, up...

  2. IMPROVED RANDOMIZED ALGORITHM FOR THE EQUIVALENT 2-CATALOG SEGMENTATION PROBLEM

    Institute of Scientific and Technical Information of China (English)

    2005-01-01

    An improved randomized algorithm of the equivalent 2-catalog segmentation problem is presented. The result obtained in this paper makes some progress to answer the open problem by analyze this algorithm with performance guarantee. A 0.6378-approximation for the equivalent 2-catalog segmentation problem is obtained.

  3. Satellite data compression

    CERN Document Server

    Huang, Bormin

    2011-01-01

    Satellite Data Compression covers recent progress in compression techniques for multispectral, hyperspectral and ultra spectral data. A survey of recent advances in the fields of satellite communications, remote sensing and geographical information systems is included. Satellite Data Compression, contributed by leaders in this field, is the first book available on satellite data compression. It covers onboard compression methodology and hardware developments in several space agencies. Case studies are presented on recent advances in satellite data compression techniques via various prediction-

  4. Trends in communications satellites

    CERN Document Server

    Curtin, Denis J

    1979-01-01

    Trends in Communications Satellites offers a comprehensive look at trends and advances in satellite communications, including experimental ones such as NASA satellites and those jointly developed by France and Germany. The economic aspects of communications satellites are also examined. This book consists of 16 chapters and begins with a discussion on the fundamentals of electrical communications and their application to space communications, including spacecraft, earth stations, and orbit and wavelength utilization. The next section demonstrates how successful commercial satellite communicati

  5. Automatic Classification of Variable Stars in Catalogs with missing data

    CERN Document Server

    Pichara, Karim

    2013-01-01

    We present an automatic classification method for astronomical catalogs with missing data. We use Bayesian networks, a probabilistic graphical model, that allows us to perform inference to pre- dict missing values given observed data and dependency relationships between variables. To learn a Bayesian network from incomplete data, we use an iterative algorithm that utilises sampling methods and expectation maximization to estimate the distributions and probabilistic dependencies of variables from data with missing values. To test our model we use three catalogs with missing data (SAGE, 2MASS and UBVI) and one complete catalog (MACHO). We examine how classification accuracy changes when information from missing data catalogs is included, how our method compares to traditional missing data approaches and at what computational cost. Integrating these catalogs with missing data we find that classification of variable objects improves by few percent and by 15% for quasar detection while keeping the computational co...

  6. Introducing the All-sky NOAO Source Catalog

    Science.gov (United States)

    Nidever, David L.; NOAO DataLab

    2017-06-01

    Most of the sky has been imaged with NOAO's telescopes from both hemispheres. While the large majority of these data were obtained for PI-led projects only a small fraction have been released to the community via well-calibrated and easily accessible catalogs. We are remedying this by created a catalog of sources from most of the public data taken on CTIO-4m+DECam as well as KPNO-4m+Mosaic3. This catalog, called the NOAO Source Catalog (NSC), already contains 2.3 billion unique objects, 19 billion source measurements, covers ~25,000 square degrees of the sky, has 10-sigma depths of ~23rd magnitude in most broadband filters, and astrometric accuracy of ~20 mas. We plan to release the catalog via the new NOAO Data Lab service in the near future.

  7. Large-scale Cosmic Flows from Cosmicflows-2 Catalog

    CERN Document Server

    Watkins, Richard

    2014-01-01

    We calculate the large-scale bulk flow from the Cosmicflows-2 peculiar velocity catalog (Tully et al. 2013) using the minimum variance method introduced in Watkins et al. (2009). We find a bulk flow of 262 +/- 60 km/sec on a scale of 100 Mpc/h, a result somewhat smaller than that found from the COMPOSITE catalog introduced in Watkins et al. (2009), a compendium of peculiar velocity data that has many objects in common with the Cosmicflows-2 sample. We find that distances are systematically larger in the Cosmicflows-2 catalog for objects in common due to a different approach to bias correction, and that this explains the difference in the bulk flows derived from the the two catalogs. The bulk flow result from the Cosmicflows-2 survey is consistent with expectations from LCDM, and thus this catalog potentially resolves an important challenge to the standard cosmological model.

  8. ‡biblios: An Open Source Cataloging Editor

    Directory of Open Access Journals (Sweden)

    Chris Catalfo

    2008-12-01

    Full Text Available ‡biblios is an open source cataloging editor designed to allow libraries to perform copy and original cataloging in a web based environment. ‡biblios allows users to search for, edit, and save bibliographic records in the MARC21/MARCXML formats. It also allows users to send records directly to integrated library systems such as the Koha ILS. Where most MARC editors are part of an integrated library system (and therefore require logging in, ‡biblios allows users to catalog with an open source standalone system available anywhere via a web browser. Unlike other cataloging editors, it offers an attractive user interface for searching, saving and editing cataloging records. This article describes the system architecture and design of ‡biblios.

  9. Catalog of averaged magnetic phase curves of stars

    CERN Document Server

    Bychkov, V D; Madej, J

    2016-01-01

    The second version of the catalog contains information about 275 stars of different types. During the time that has elapsed since the creation of the first catalog, situation fundamentally changed primarily due to the significant increase of accuracy of magnetic fields (MF) measurements. Up to now global magnetic field were discoverd and measured in stars of many types and their behavior partially was studied. Magnetic behavior of Ap Bp stars is the most thoroughly studied. The catalog contains information about 182 such objects. The main goals for the construction of the catalog are: 1. Review and summarize our kowledge about magnetic behavior of different types of stars. 2. The whole data are uniformly presented and processed which will allow one to perform statistical analysis of the variability of the (longitudinal) magnetic fields of stars. 3. The informations are presented in the most convenient form for testing different theoretical models of different kind. 4. The catalog will be useful for the develo...

  10. The McGill Magnetar Catalog

    CERN Document Server

    Olausen, S A

    2013-01-01

    We present a catalog of the 26 currently known magnetars and magnetar candidates. We tabulate astrometric and timing data for all catalog sources, as well as their observed properties at all wavelengths from radio to gamma ray, particularly the spectral parameters of the quiescent X-ray emission. We show histograms of the spatial and timing properties of the magnetars, comparing them with the known pulsar population, and we investigate and plot possible correlations between their timing, X-ray, and multiwavelength properties. We find best-fit values for the scale height of magnetars, assuming they are exponentially distributed, to be 20-30 pc, with uncertainties of ~20%. These values are smaller than those measured for OB stars, providing evidence that magnetars are born from the most massive O stars. From the same fits, we find that the Sun lies ~13-20 pc above the Galactic plane, consistent with previous measurements. We confirm previously identified correlations between quiescent X-ray luminosity L_X and m...

  11. A Catalog of Coronal "EIT Wave" Transients

    Science.gov (United States)

    Thompson, B. J.; Myers, D. C.

    2009-01-01

    Solar and Heliospheric Observatory (SOHO) Extreme ultraviolet Imaging Telescope (EIT) data have been visually searched for coronal "EIT wave" transients over the period beginning from 1997 March 24 and extending through 1998 June 24. The dates covered start at the beginning of regular high-cadence (more than one image every 20 minutes) observations, ending at the four-month interruption of SOHO observations in mid-1998. One hundred and seventy six events are included in this catalog. The observations range from "candidate" events, which were either weak or had insufficient data coverage, to events which were well defined and were clearly distinguishable in the data. Included in the catalog are times of the EIT images in which the events are observed, diagrams indicating the observed locations of the wave fronts and associated active regions, and the speeds of the wave fronts. The measured speeds of the wave fronts varied from less than 50 to over 700 km s(exp -1) with "typical" speeds of 200-400 km s(exp -1).

  12. GRB Catalog: Bursts from Vela to Swift

    Science.gov (United States)

    Angelini, L.

    2008-01-01

    Gamma ray burst (GRB) astronomy started when the first event was recorded on July 2, 1967 by Vela 4a and 4b. Since then many missions have flown experiments capable of detecting GRBs. The events collected by these older experiments are mostly available in paper copy, each containing a few ten to a few hundred bursts. No systematic effort in cataloging of these bursts has been available. In some cases the information is unpublished and in others difficult to retrieve. The first major GRB catalog was obtained by GRO with the BATSE experiment. It contains more than 2000 bursts and includes homogeneous information for each of the bursts. With the launch of Swift, the first Gamma-ray/X-ray mission dedicated to the study of GRBs and their afterglows, a wealth of information is collected by the Swift instrument as well as from ground-based telescopes. This talk will describe the efforts to create a comprehensive GRBCAT and its current status and future prospective.

  13. The Bernese atmospheric multiple catalog access tool (BEAMCAT): a tool for users of popular spectral line catalogs

    Energy Technology Data Exchange (ETDEWEB)

    Feist, D.G.Dietrich G. E-mail: dietrich.feist@mw.iap.unibe.ch

    2004-04-15

    Users of spectroscopic data bases in the microwave region quickly realize that each existing spectral line catalog provide only part of the information that they would like to have. As a workaround for this problem, several merged spectral line data bases have been created by different groups. However, these merged data bases are usually very specific for a certain application and are difficult to maintain. The BEAMCAT data base takes a totally new approach that makes it possible to generate merged spectral line catalogs from any number of source catalogs in multiple user-defined formats. The current version of BEAMCAT contains the complete JPL and HITRAN catalog. Other catalogs like GEISA will soon be included, too. As a first application of the BEAMCAT data base, the author conducted a thorough intercomparison of spectral parameters for all the transitions that the JPL catalog and HITRAN have in common. The intercomparison shows that the spectral parameters in the catalogs are by no means identical. While the difference in center frequency is usually small, the differences in line intensity reach from almost exact match to discrepancies of several orders of magnitude. While it cannot be ruled out that some of the lines were matched incorrectly, this intercomparison might be helpful to identify problems with the original catalogs.

  14. Catalog of ERIC Clearinghouse Publications, 2000. A Catalog of Free and Low-Cost ERIC Clearinghouse Materials Currently in Print.

    Science.gov (United States)

    Goncalves, Silvia, Ed.

    This Catalog highlights more than 1,200 available education titles produced directly by the Educational Resources Information Center (ERIC) system. The titles are arranged by ERIC component and cover a broad range of subject areas related to education. The Catalog provides ordering information and prices (subject to change) for each title and…

  15. Expresión de la ira en adolescentes holguineros. Repercusión psicológica y diferencias de género

    Directory of Open Access Journals (Sweden)

    Yuri Arsenio Sanz Martínez

    2006-01-01

    Full Text Available Aborda el proceso de validación de dos instrumentos diagnósticos: Escala Pediátrica de la Expresión de la Ira y Juego Clase, aplicados a un grupo de adolescentes tempranos. Se obtiene que ambos instrumentos poseen índices aceptables y altos de confiabilidad y se reporta validez de constructo. Se comprueba que los adolescentes que externalizan la ira emiten menos comportamientos prosociales que aquellos que la manejan de forma controlada, quienes son más sociables, aceptados, y tienen más amigos. Los adolescentes que reprimen su ira son los que menos comportamientos prosociales emiten. Los varones expresan de forma más abierta su ira que las hembras.

  16. VizieR Online Data Catalog: SSDF survey: IRAC catalogs (Ashby+, 2013)

    Science.gov (United States)

    Ashby, M. L. N.; Stanford, S. A.; Brodwin, M.; Gonzalez, A. H.; Martinez-Manso, J.; Bartlett, J. G.; Benson, B. A.; Bleem, L. E.; Crawford, T. M.; Dey, A.; Dressler, A.; Eisenhardt, P. R. M.; Galametz, A.; Jannuzi, B. T.; Marrone, D. P.; Mei, S.; Muzzin, A.; Pacaud, F.; Pierre, M.; Stern, D.; Vieira, J. D.

    2014-01-01

    We carried out our survey in a field that benefits from an abundance of supporting data from X-ray to radio wavelengths, and which has extremely low levels of Galactic dust emission, being among the cleanest 1% of contiguous 100deg2 regions on the sky as measured in the 100um IRAS map (Finkbeiner et al. 1999ApJ...524..867F). See section 2 for further details. The SSDF was covered by Astronomical Observation Requests (AORs) having coverage footprints of various (sometimes irregular) shapes and sizes. Although the four-AOR observations of specific areas were performed consecutively, spacecraft visibility constraints meant that coverage of the full SSDF had to be accumulated in separate campaigns spaced roughly six months apart. These took place in 2011 July-August, 2012 January-February, 2012 July-September, and 2012 December-2013 February. See section 3 for further explanations. (2 data files).

  17. A Tale of Three Galaxies: Deciphering the Infrared Emission of the Spectroscopically Anomalous Galaxies IRAS F10398+1455, IRAS F21013-0739 and SDSS J0808+3948

    CERN Document Server

    Xie, Yanxia; Hao, Lei; Nikutta, Robert

    2015-01-01

    The \\textit{Spitzer}/Infrared Spectrograph spectra of three spectroscopically anomalous galaxies (IRAS~F10398+1455, IRAS~F21013-0739 and SDSS~J0808+3948) are modeled in terms of a mixture of warm and cold silicate dust, and warm and cold carbon dust. Their unique infrared (IR) emission spectra are characterized by a steep $\\simali$5--8$\\mum$ emission continuum, strong emission bands from polycyclic aromatic hydrocarbon (PAH) molecules, and prominent silicate emission. The steep $\\simali$5--8$\\mum$ emission continuum and strong PAH emission features suggest the dominance of starbursts, while the silicate emission is indicative of significant heating from active galactic nuclei (AGNs). With warm and cold silicate dust of various compositions ("astronomical silicate," amorphous olivine, or amorphous pyroxene) combined with warm and cold carbon dust (amorphous carbon, or graphite), we are able to closely reproduce the observed IR emission of these %spectroscopically anomalous galaxies. We find that the dust tempe...

  18. VizieR Online Data Catalog: OCARS catalog second version (Malkin, 2016)

    Science.gov (United States)

    Malkin, Z. M.

    2016-11-01

    Unlike the first version, supported in 2007-2015, the second version of the OCARS catalog includes three files: ocars.txt is the main file containing the source coordinates, source types, redshifts, and approximate magnitudes, together with commentary; this file corresponds to the first version of the OCARS catalog; ocars_m.txt contains photometric data in the 13 uUBgV rRiIzJHK bands; ocars_n.txt contains a table of corresponding source names in various catalogs; currently, only cross-identifications with IVS programs4 and the LQAC catalog [9] are included; The list of objects included in the OCARS catalog is formed from various astrometric and geodeticVLBI programs and catalogs in the following order: - sources in the ICRF2 [2]; - other sources observed in the framework of IVS programs; - sources from the NASA Goddard VLBI group catalog5 ; - sources from the RFC catalog,6 which is the most complete astrometric catalog of radio sources, is updated each quarter, and contributed more than half the OCARS objects; the latest version of OCARS used the RFC-2016a catalog based on observations obtained in 1980-2015 as part of IVS and other radio astrometric programs [19-31]; - sources from the literature. Optical Characteristics of Astrometric Radio Sources (OCARS) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Last revised: 27-NOV-2016 Latest update: - removed 30+ RFC sources not identified in NED and optics - removed rather long detailed statistics table, which seems to be not interested for most of users; it is always available on request - a few additions and amendments E-mail alerts about updates are available on request. URL of this file is http://www

  19. Compact Cores of Molecular Clouds in NGC 1333/IRAS6-9%NGC 1333/IRA6-9 区域中的致密分子云核

    Institute of Scientific and Technical Information of China (English)

    孙锦; 沈家健; 张燕平; 孙金江

    2000-01-01

    利用紫金山天文台青海站的13.7 m毫米波望远镜,对NGC 1333/IRAS 6-9附近的一个10.3′ 10′和6.8′ 8′的恒星形成区, 进行了和的成图观测,发现了多个新的分子云核和沿SSV 12IRAS8方向的双极外向流. 本文给出了每个云核的观测特性和物理参数. 分析了这一区域的云核分布和速度场结构. 详细讨论了该区域的云核分布、双极外向流和群集的年轻天体、红外源以及HH天体的关系.%The13CO(1-0)andC18O(1-0) emissions in the NGC 1333/IRAS69 star forming region were mapped with the 13.7 m millimeter wave telescope of Purple Mountain Observatory. The areas covered are 10.3′ 10′for and 6.8′ 8′ for , respectively. Several new compact molecular cores were discovered and a bipolar outflow of was identified along the SSV12IRAS8 direction. We present the observed properties and derived the physical parameters for all the and cores. The core distribution and velocity structure are analyzed for this region. The relationship between cores, bipolar outflow and crowded young stellar objects (including infrared sources and HH objects) is also discussed indetail.

  20. Xichang Satellite Launch Center

    Institute of Scientific and Technical Information of China (English)

    LiuJie

    2004-01-01

    Xichang Satellite Launch Center(XSLC) is mainly for geosynchronous orbit launches. The main purpose of XSLC is to launch spacecraft, such as broadcasting,communications and meteorological satellites, into geo-stationary orbit.Most of the commercial satellite launches of Long March vehicles have been from Xichang Satellite Launch Center. With 20 years' development,XSLC can launch 5 kinds of launch vehicles and send satellites into geostationary orbit and polar orbit. In the future, moon exploration satellites will also be launched from XSLC.

  1. Handbook of satellite applications

    CERN Document Server

    Madry, Scott; Camacho-Lara, Sergio

    2017-01-01

    The first edition of this ground breaking reference work was the most comprehensive reference source available about the key aspects of the satellite applications field. This updated second edition covers the technology, the markets, applications and regulations related to satellite telecommunications, broadcasting and networking—including civilian and military systems; precise satellite navigation and timing networks (i.e. GPS and others); remote sensing and meteorological satellite systems. Created under the auspices of the International Space University based in France, this brand new edition is now expanded to cover new innovative small satellite constellations, new commercial launching systems, innovation in military application satellites and their acquisition, updated appendices, a useful glossary and more.

  2. VizieR Online Data Catalog: Intermediate-luminosity X-ray objects catalog (Colbert+, 2002)

    Science.gov (United States)

    Colbert, E. J. M.; Ptak, A. F.

    2002-11-01

    ROSAT, and now Chandra, X-ray images allow studies of extranuclear X-ray point sources in galaxies other than our own. X-ray observations of normal galaxies with ROSAT and Chandra have revealed that off-nuclear, compact, intermediate-luminosity (LX[2-10keV]>=1039erg/s) X-ray objects (IXOs, a.k.a. ULXs [ultraluminous X-ray sources]) are quite common. Here we present a catalog and finding charts for 87 IXOs in 54 galaxies, derived from all of the ROSAT HRI imaging data for galaxies with cz<=5000km/s from the Third Reference Catalog of Bright Galaxies. (2 data files).

  3. VizieR Online Data Catalog: PACS Evolutionary Probe (PEP-DR1) catalogs (Lutz+, 2011)

    Science.gov (United States)

    Lutz, D.; Poglitsch, A.; Altieri, B.; Andreani, P.; Aussel, H.; Berta, S.; Bongiovanni, A.; Brisbin, D.; Cava, A.; Cepa, J.; Cimatti, A.; Daddi, E.; Dominguez-Sanchez, H.; Elbaz, D.; Foerster Schreiber, N. M.; Genzel, R.; Grazian, A.; Gruppioni, C.; Harwit, M.; Le Floc'h, E.; Magdis, G.; Magnelli, B.; Maiolino, R.; Nordon, R.; Perez Garcia, A. M.; Popesso, P.; Pozzi, F.; Riguccini, L.; Rodighiero, G.; Saintonge, A.; Sanchez Portal, M.; Santini, P.; Shao, L.; Sturm, E.; Tacconi, L. J.; Valtchanov, I.; Wetzstein, M.; Wieprecht, E.

    2013-11-01

    PACS catalogs built by the PEP team, with key contributions by Stefano Berta, Benjamin Magnelli, Paola Popesso, Dieter Lutz, Francesca Pozzi, Bruno Altieri, Herve Aussel, Hoseong Hwang, Emeric Le Floc'h, Georgios Magdis, Raanan Nordon, Albrecht Poglitsch, Laurie Riguccini, Amelie Saintonge, Li Shao. For more details, please refer to Lutz et al. (2011A&A...532A..90L) and to the PDF documentation associated to the release. Data and catalogs can be retrieved from the web page http://www.mpe.mpg.de/ir/Research/PEP/publicdatareleases.php See the PDF documentation associated to the PEP DR1 release, http://www.mpe.mpg.de/resources/PEP/DR1tarballs/readmePEP_global.pdf and http://www.mpe.mpg.de/resources/PEP/DR1tarballs/readmePEP_SPIRE.pdf for more details. (69 data files).

  4. VizieR Online Data Catalog: SAI Open Clusters Catalog (Glushkova+, 2009)

    Science.gov (United States)

    Glushkova, E. V.; Koposov, S. E.; Zolotukhin, I. Yu.; Beletsky, Y. V.; Vlasov, A. D.; Leonova, S. I.

    2009-09-01

    Data for 194 open clusters are listed. We provide color excesses E(B-V), distance moduli and ages with corresponding errors for 168 clusters. Lack of the errors in ages indicates that it was only possible to determine the upper limit of the age estimation. For 26 clusters we give the coordinates and diameters only. Clusters which name starts with 'SAI' or 'Koposov' were discovered or verified in the frame of this study; remaining clusters were known before but either have incorrect/inconsistent parameter estimations or do not have them at all. Tabular data, color-magnitude diagrams with fitted isochrones, Hess-diagrams and quick-look cluster images, as well as catalogs of UBVRI CCD photometry (where available) can be accessed from individual cluster web-pages at SAI OCL Catalog web-site either through the web-browser or by means of common programming interfaces. (1 data file).

  5. Congestion at Card and Book Catalogs--A Queuing Theory Approach.

    Science.gov (United States)

    Bookstein, Abraham

    The question of whether a library's catalog should consist of cards arranged in a single alphabetical order (the "dictionary catalog) or be segregated as a separate file is discussed. Development is extended to encompass related problems involved in the creation of a book catalog. A model to study the effects of congestion at the catalog is…

  6. In-depth survey of sunspot and active region catalogs

    Science.gov (United States)

    Lefèvre, Laure; Clette, Frédéric; Baranyi, Tunde

    2011-08-01

    When consulting detailed photospheric catalogs for solar activity studies spanning long time intervals, solar physicists face multiple limitations in the existing catalogs: finite or fragmented time coverage, limited time overlap between catalogs and even more importantly, a mismatch in contents and conventions. In view of a study of new sunspot-based activity indices, we have conducted a comprehensive survey of existing catalogs. In a first approach, we illustrate how the information from parallel catalogs can be merged to form a much more comprehensive record of sunspot groups. For this, we use the unique Debrecen Photoheliographic Data (DPD), which is already a composite of several ground observatories and SOHO data, and the USAF/Mount Wilson catalog from the Solar Optical Observing Network (SOON). We also describe our semi-interactive cross-identification method, which was needed to match the non-overlapping solar active region nomenclature, the most critical and subtle step when working with multiple catalogs. This effort, focused here first on the last two solar cycles, should lead to a better central database collecting all available sunspot group parameters to address future solar cycle studies beyond the traditional sunspot index time series Ri.

  7. Yucca Mountain Site Characterization Project technical data catalog: Quarterly supplement

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1994-12-31

    The Department of Energy (DOE)/Nuclear Regulatory Commission (NRC) Site-Specific Procedural Agreement for Geologic Repository Site Investigation and Characterization Program requires the DOE to develop and maintain a catalog of data which will be updated and provided to the NRC at least quarterly. This catalog is to include a description of the data; the time (date), place, and method of acquisition; and where the data may be examined. The Yucca Mountain Site Characterization Project (YMP) Technical Data Catalog is published and distributed-in accordance with the requirements of the Site-Specific Agreement. The YMP Technical Data Catalog is a report based on reference information contained in the YMP Automated Technical Data Tracking System (ATDT). The reference information is provided by Participants for data acquired or developed in support of the YMP. The Technical Data Catalog is updated quarterly and distributed in the month following the end of each quarter. A complete revision to the catalog is published at the end of each fiscal year. Supplements to the end-of-year edition are published each quarter. These supplements provide information related to new data items not included in previous quarterly updates and data items affected by changes to previously published reference information. The Technical Data Catalog, dated September 30, 1994, should be retained as the baseline document for the supplements until the end-of-year revision is published and distributed in October 1995.

  8. Yucca Mountain Site Characterization Project technical data catalog quarterly supplement

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1995-03-31

    The Department of Energy (DOE)/Nuclear Regulatory Commission (NRC) Site-Specific Procedural Agreement for Geologic Repository Site Investigation and Characterization Program requires the DOE to develop and maintain a catalog of data which will be updated and provided to the NRC at least quarterly. This catalog is to include a description of the data; the time (date), place, and method of acquisition; and where the data may be examined. The Yucca Mountain Site Characterization Project (YMP) Technical Data Catalog is published and distributed in accordance with t requirements of the Site-Specific Agreement. The YMP Technical Data Catalog is a report based on reference information contained in the YMP Automated Technical Data Tracking System (ATDT). The reference information is provided by Participants for data acquired or developed in support of the YMP. The Technical Data Catalog is updated quarterly and distributed in the month following the end of each quarter. A complete revision to the catalog is published at the end of each fiscal year. Supplements to the end-of-year edition are published each quarter. These supplements provide information related to new data items not included in previous quarterly updates and data items affected by changes to@ previously published reference information. The Technical Data Catalog, dated September 30, 1994, should be retained as the baseline document for the supplements until the end-of-year revision is published and distributed in October 1995.

  9. Yucca Mountain Site Characterization Project: Technical Data Catalog quarterly supplement

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1994-03-31

    The March 21, 1993, Department of Energy (DOE)/Nuclear Regulatory Commission (NRC) Site-Specific Procedural Agreement for Geologic Repository Site Investigation and Characterization Program requires the DOE to develop and maintain a catalog of data which will be updated and provided to the NRC at least quarterly. This catalog is to include a description of the data; the time (date), place, and method of acquisition; and where it may be examined. The Yucca Mountain Site Characterization Project (YMP) Technical Data Catalog is published and distributed in accordance with the requirements of the Site-Specific Agreement. The YMP Technical Data Catalog is a report based on reference information contained in the YMP Automated Technical Data Tracking System (ATDT). The reference information is provided by Participants for data acquired or developed in support of the YMP. The Technical Data Catalog is updated quarterly and published in the month following the end of each quarter. A complete revision to the Catalog is published at the end of each fiscal year. Supplements to the end-of-year edition are published each quarter. These supplements provide information related to new data items not included in previous quarterly updates and data items affected by changes to previously published reference information. The Technical Data Catalog, dated September 30, 1993, should be retained as the baseline document for the supplements until the end-of-year revision is published and distributed in October 1994.

  10. The HEASARC Swift Gamma-Ray Burst Archive: The Pipeline and the Catalog

    Science.gov (United States)

    Donato, Davide; Angelini, Lorella; Padgett, C.A.; Reichard, T.; Gehrels, Neil; Marshall, Francis E.; Sakamoto, Takanori

    2012-01-01

    Since its launch in late 2004, the Swift satellite triggered or observed an average of one gamma-ray burst (GRB) every 3 days, for a total of 771 GRBs by 2012 January. Here, we report the development of a pipeline that semi automatically performs the data-reduction and data-analysis processes for the three instruments on board Swift (BAT, XRT, UVOT). The pipeline is written in Perl, and it uses only HEAsoft tools and can be used to perform the analysis of a majority of the point-like objects (e.g., GRBs, active galactic nuclei, pulsars) observed by Swift. We run the pipeline on the GRBs, and we present a database containing the screened data, the output products, and the results of our ongoing analysis. Furthermore, we created a catalog summarizing some GRB information, collected either by running the pipeline or from the literature. The Perl script, the database, and the catalog are available for downloading and querying at the HEASARC Web site.

  11. Recovery of carboxylic acids produced during dark fermentation of food waste by adsorption on Amberlite IRA-67 and activated carbon.

    Science.gov (United States)

    Yousuf, Ahasa; Bonk, Fabian; Bastidas-Oyanedel, Juan-Rodrigo; Schmidt, Jens Ejbye

    2016-10-01

    Amberlite IRA-67 and activated carbon were tested as promising candidates for carboxylic acid recovery by adsorption. Dark fermentation was performed without pH control and without addition of external inoculum at 37°C in batch mode. Lactic, acetic and butyric acids, were obtained, after 7days of fermentation. The maximum acid removal, 74%, from the Amberlite IRA-67 and 63% from activated carbon was obtained from clarified fermentation broth using 200gadsorbent/Lbroth at pH 3.3. The pH has significant effect and pH below the carboxylic acids pKa showed to be beneficial for both the adsorbents. The un-controlled pH fermentation creates acidic environment, aiding in adsorption by eliminating use of chemicals for efficient removal. This study proposes simple and easy valorization of waste to valuable chemicals.

  12. Warm water deuterium fractionation in IRAS 16293-2422. The high-resolution ALMA and SMA view

    DEFF Research Database (Denmark)

    Persson, Magnus Vilhelm; Jørgensen, J. K.; van Dishoeck, E. F.

    2013-01-01

    observations reveal the physical and chemical structure of water vapor close to the protostars on solar-system scales. The red-shifted absorption detected toward source B is indicative of infall. The excitation temperature is consistent with the picture of water ice evaporation close to the protostar. The low......Context. Measuring the water deuterium fractionation in the inner warm regions of low-mass protostars has so far been hampered by poor angular resolution obtainable with single-dish ground- and space-based telescopes. Observations of water isotopologues using (sub)millimeter wavelength...... interferometers have the potential to shed light on this matter. Aims: To measure the water deuterium fractionation in the warm gas of the deeply-embedded protostellar binary IRAS 16293-2422. Methods: Observations toward IRAS 16293-2422 of the 53,2 - 44,1 transition of H218O at 692.07914 GHz from Atacama Large...

  13. Lick Northern Proper Motion Program. III. Lick NPM2 Catalog

    Science.gov (United States)

    Hanson, Robert B.; Klemola, Arnold R.; Jones, Burton F.; Monet, David G.

    2004-09-01

    The Lick Northern Proper Motion (NPM) program, a two-epoch (1947-1988) photographic survey of the northern two-thirds of the sky (δ>~-23deg), has measured absolute proper motions, on an inertial system defined by distant galaxies, for 378,360 stars in the magnitude range 8NPM1 Catalog contains 148,940 stars in 899 fields outside the Milky Way's zone of avoidance. The 2003 NPM2 Catalog contains 232,062 stars in the remaining 347 NPM fields near the plane of the Milky Way. This paper describes the NPM2 star selection, plate measurements, astrometric and photometric data reductions, and catalog compilation. The NPM2 Catalog contains 122,806 faint (B>=14) anonymous stars for astrometry and Galactic studies, 91,648 bright (BNPM2 proper motions are on the ICRS system, via Tycho-2 stars, to an accuracy of 0.6 mas yr-1 in each field. The rms proper-motion precision is 6 mas yr-1. Positional errors average 80 mas at the mean plate epoch 1968, and 200 mas at the NPM2 catalog epoch 2000. NPM2 photographic photometry errors average 0.18 mag in B and 0.20 mag in B-V. The NPM2 Catalog and the updated (to J2000.0) NPM1 Catalog are available at the CDS Strasbourg data center and on the NPM Web site. The NPM2 Catalog completes the Lick Northern Proper Motion program after a half-century of work by three generations of Lick Observatory astronomers. The NPM Catalogs will serve as a database for research in Galactic structure, stellar kinematics, and astrometry.

  14. Galileo satellite antenna modeling

    Science.gov (United States)

    Steigenberger, Peter; Dach, Rolf; Prange, Lars; Montenbruck, Oliver

    2015-04-01

    The space segment of the European satellite navigation system Galileo currently consists of six satellites. Four of them belong to the first generation of In-Orbit Validation (IOV) satellites whereas the other two are Full Operational Capability (FOC) satellites. High-precision geodetic applications require detailed knowledge about the actual phase center of the satellite and receiver antenna. The deviation of this actual phase center from a well-defined reference point is described by phase center offsets (PCOs) and phase center variations (PCVs). Unfortunately, no public information is available about the Galileo satellite antenna PCOs and PCVs, neither for the IOV, nor the FOC satellites. Therefore, conventional values for the IOV satellite antenna PCOs have been adopted for the Multi-GNSS experiment (MGEX) of the International GNSS Service (IGS). The effect of the PCVs is currently neglected and no PCOs for the FOC satellites are available yet. To overcome this deficiency in GNSS observation modeling, satellite antenna PCOs and PCVs are estimated for the Galileo IOV satellites based on global GNSS tracking data of the MGEX network and additional stations of the legacy IGS network. Two completely independent solutions are computed with the Bernese and Napeos software packages. The PCO and PCV values of the individual satellites are analyzed and the availability of two different solutions allows for an accuracy assessment. The FOC satellites are built by a different manufacturer and are also equipped with another type of antenna panel compared to the IOV satellites. Signal transmission of the first FOC satellite has started in December 2014 and activation of the second satellite is expected for early 2015. Based on the available observations PCO estimates and, optionally PCVs of the FOC satellites will be presented as well. Finally, the impact of the new antenna model on the precision and accuracy of the Galileo orbit determination is analyzed.

  15. VizieR Online Data Catalog: The Million Quasars (Milliquas) catalog (Flesch, 2016)

    Science.gov (United States)

    Flesch, E. W.

    2017-04-01

    This is a compendium of 452,794 type-I QSOs and AGN, largely complete from the literature to 21 June 2016. Also included are ~900K high-confidence quasar candidates from SDSS-based photometric quasar catalogs (of 90%+ likelihood) and from all-sky radio/X-ray associated objects (of 80%+ likelihood). Type-II and Bl Lac objects are also included, bringing the total count to 1,422,219. This version is the same as v4.8 but with these changes: (1) The 3XMM-DR6 X-ray source catalog (www.cosmos.esa.int/web/xmm-newton/xsa) has been added and new X-ray associations calculated. (2) Radio/X-ray data have been reprocessed in line with that of the new Million Optical Radio/X-ray (MORX) associations catalogue, in preparation. The catalog format is simple, each object is shown as one line bearing the J2000 coordinates, its original name, object class, red and blue optical magnitudes, PSF class, redshift, the citations for the name and redshift, plus up to four radio/X-ray identifiers where applicable. Questions/comments/praise/complaints may be directed to Eric Flesch at eric(at)flesch.org. (1 data file).

  16. The Advanced Camera for Surveys General Catalog: A High Redshift Galaxy Morphology Catalog

    Science.gov (United States)

    Griffith, Roger; Newman, J.; Cooper, M.; Stern, D.; Moustakas, L.; Davis, M.

    2009-05-01

    We use publicly available data obtained with the Advanced Camera for Surveys (ACS) instrument on the Hubble Space Telescope to construct the ACS General Catalog (ACS-GC). The ACS-GC includes over 370,000 astronomical sources (stars + galaxies) derived from the AEGIS, COSMOS, GEMS, and GOODS surveys. We include publicly available redshifts from the DEEP2, COMBO-17, TKRS, PEARS and zCOSMOS surveys to supply redshifts for a considerable fraction ( 52%) of the imaging sample. GALAPAGOS was used to construct photometric (SExtractor) and morphological (GALFIT) catalogs. The morphological analysis assumes a single Sersic model for each object to derive quantitative structural parameters. Galaxy Zoo will measure visual morphologies for 200,000 of these galaxies. The ACS-GC includes color images, GALFIT residual images, a galaxy atlas, and a photometry + morphology + redshift catalog. We use these data to investigate the size-redshift relationship for both early and late-type galaxies out to z 1. The entire data set will be made publicly available through the NASA Extragalactic Database (NED) and LEVEL5.

  17. Hot Water in the Inner 100 AU of the Class 0 Protostar NGC 1333 IRAS2A

    DEFF Research Database (Denmark)

    Visser, Ruud; Jørgensen, Jes Kristian; Kristensen, Lars E.

    2013-01-01

    -303 lines of H_2^{16}O and H_2^{18}O (1097 GHz, E u/k = 249 K) in the low-mass Class 0 protostar NGC 1333 IRAS2A. A spherical radiative transfer model with a power-law density profile is unable to reproduce both the HIFI data and existing interferometric data on the H_2^{18}O 313-220 line (203 GHz, E u...

  18. PROBABILISTIC CATALOGS FOR CROWDED STELLAR FIELDS

    Energy Technology Data Exchange (ETDEWEB)

    Brewer, Brendon J. [Department of Statistics, University of Auckland, Private Bag 92019, Auckland 1142 (New Zealand); Foreman-Mackey, Daniel; Hogg, David W., E-mail: bj.brewer@auckland.ac.nz [Center for Cosmology and Particle Physics, Department of Physics, New York University, Washington Place, New York, NY 10003 (United States)

    2013-07-01

    We present and implement a probabilistic (Bayesian) method for producing catalogs from images of stellar fields. The method is capable of inferring the number of sources N in the image and can also handle the challenges introduced by noise, overlapping sources, and an unknown point-spread function. The luminosity function of the stars can also be inferred, even when the precise luminosity of each star is uncertain, via the use of a hierarchical Bayesian model. The computational feasibility of the method is demonstrated on two simulated images with different numbers of stars. We find that our method successfully recovers the input parameter values along with principled uncertainties even when the field is crowded. We also compare our results with those obtained from the SExtractor software. While the two approaches largely agree about the fluxes of the bright stars, the Bayesian approach provides more accurate inferences about the faint stars and the number of stars, particularly in the crowded case.

  19. Fragmentation in the massive star-forming region IRAS 19410+2336

    Science.gov (United States)

    Rodón, J. A.; Beuther, H.; Schilke, P.

    2012-09-01

    Context. The core mass functions (CMFs) of low-mass star-forming regions are found to resemble the shape of the initial mass function (IMF). A similar result is observed for the dust clumps in high-mass star-forming regions, although on spatial scales of clusters that do not resolve the substructure that is found in these massive clumps. The region IRAS 19410+2336 is one exception, having been observed on spatial scales on the order of ~2500 AU, which are sufficient to resolve the clump substructure into individual cores. Aims: We investigate the protostellar content of IRAS 19410+2336 at high spatial resolution at 1.4 mm, determining the temperature structure of the region and deriving its CMF. Methods: The massive star-forming region IRAS 19410+2336 was mapped with the PdBI (BCD configurations) at 1.4 mm and 3 mm in the continuum and several transitions of formaldehyde (H2CO) and methyl cyanide (CH3CN). The H2CO transitions were also observed with the IRAM 30 m Telescope. Results: We detect 26 continuum sources at 1.4 mm with a spatial resolution as low as ~2200 AU, several of them with counterparts at near- and mid-infrared wavelengths, distributed in two (proto)clusters. With the PdBI CH3CN and PdBI/IRAM 30 m H2CO emission, we derive the temperature structure of the region, ranging from 35 K to 90 K. Using these temperatures, we calculate the core masses of the detected sources, ranging from ~0.7 M⊙ to ~8 M⊙. These masses are strongly affected by the spatial filtering of the interferometer, which removes a common envelope with ~90% of the single-dish flux. Considering only the detected dense cores and accounting for binning effects as well as cumulative distributions, we derive a CMF, with a power-law index β = -2.3 ± 0.2. We resolve the Jeans length of the (proto)clusters by one order of magnitude, and only find a small velocity dispersion between the different subsources. Conclusions: Since we cannot unambiguously differentiate between protostellar and

  20. The chemical structure of the Class 0 protostellar envelope NGC 1333 IRAS 4A⋆⋆

    Science.gov (United States)

    Koumpia, E.; Semenov, D. A.; van der Tak, F. F. S.; Boogert, A. C. A.; Caux, E.

    2017-07-01

    Context. It is not well known what drives the chemistry of a protostellar envelope, in particular the role of the stellar mass and the protostellar outflows on the chemical enrichment of such environments. Aims: We study the chemical structure of the Class 0 protostellar envelope NGC 1333 IRAS 4A in order to (i) investigate the influence of the outflows on the chemistry; (ii) constrain the age of our studied object; (iii) compare it with a typical high-mass protostellar envelope. Methods: In our analysis we use JCMT line mapping (360-373 GHz) and HIFI pointed spectra (626.01-721.48 GHz). To study the influence of the outflow on the degree of deuteration, we compare JCMT maps of HCO+ and DCO+ with non-LTE (RADEX) models in a region that spatially covers the outflow activity of IRAS 4A. To study the envelope chemistry, we derive empirical molecular abundance profiles for the observed species using the Monte Carlo radiative transfer code (RATRAN) and adopting a 1D dust density/temperature profile from the literature. We use a combination of constant abundance profiles and abundance profiles that include jumps at two radii (T 100 K or T 30 K) to fit our observations. We compare our best-fit observed abundance profiles with the predictions from the time dependent gas grain chemical code (ALCHEMIC). Results: We detect CO, 13CO, C18O, CS, HCN, HCO+, N2H+, H2CO, CH3OH, H2O, H2S, DCO+, HDCO, D2CO, SO, SO2, SiO, HNC, CN, C2H and OCS. We divide the detected lines in three groups based on their line profiles: a) broad emission (FWHM = 4-11 km s-1), b) narrow emission (FWHMmodel for the outer envelope, with the exceptions of HCN, HNC, CN. These species along with the CO abundance require an enhanced UV field which points towards an outflow cavity. The abundances with respect to H2 are 1 to 2 orders of magnitude lower than those observed in the high mass protostellar envelope (AFGL 2591), while they are found to be similar within factors of a few when they are estimated with