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1241. Auriga bright stars BRITE phot. and RV
ID:
ivo://CDS.VizieR/J/A+A/644/A104
Title:
Auriga bright stars BRITE phot. and RV
Short Name:
J/A+A/644/A104
Date:
21 Oct 2021
Publisher:
CDS
Description:
We aim to determine periods for bright stars in the Auriga field that are otherwise not easily accessible for ground-based photometry. Continuous photometry with up to three BRITE satellites was obtained for 12 targets and subjected to a period search. Contemporaneous high-resolution optical spectroscopy with STELLA was used to obtain radial velocities through cross correlation with template spectra as well as to determine astrophysical parameters through a comparison with model spectra.
1242. Auriga-California giant molecular cloud
ID:
ivo://CDS.VizieR/J/ApJ/764/133
Title:
Auriga-California giant molecular cloud
Short Name:
J/ApJ/764/133
Date:
21 Oct 2021
Publisher:
CDS
Description:
We have mapped the Auriga/California molecular cloud with the Herschel PACS and SPIRE cameras and the Bolocam 1.1mm camera on the Caltech Submillimeter Observatory with the eventual goal of quantifying the star formation and cloud structure in this giant molecular cloud (GMC) that is comparable in size and mass to the Orion GMC, but which appears to be forming far fewer stars. We have tabulated 60 compact 70/160 {mu}m sources that are likely pre-main-sequence objects and correlated those with Spitzer and WISE mid-IR sources. At 1.1 mm, we find 18 cold, compact sources and discuss their properties. The most important result from this part of our study is that we find a modest number of additional compact young objects beyond those identified at shorter wavelengths with Spitzer.
1243. Auriga-California Molecular Cloud Catalog
ID:
ivo://irsa.ipac/Herschel/Catalog/ACMC
Title:
Auriga-California Molecular Cloud Catalog
Short Name:
ACMC Catalog
Date:
01 Oct 2018 20:27:20
Publisher:
NASA/IPAC Infrared Science Archive
Description:
The Auriga-California molecular cloud is a large region of relatively modest star formation that is part of the Gould Belt. The "Auriga-California Molecular Cloud" (ACMC) Herschel program observed a 14.5 square degree area in five far-infrared bands. The ACMC catalog provides photometry for the 60 point-like and very compact sources in each band: PACS 70 and 160 microns, SPIRE 250, 350, and 500 microns.
1244. Australian Dark Energy Survey (OzDES) quasar catalog
ID:
ivo://CDS.VizieR/J/AJ/153/107
Title:
Australian Dark Energy Survey (OzDES) quasar catalog
Short Name:
J/AJ/153/107
Date:
21 Oct 2021
Publisher:
CDS
Description:
We present a study of quasar selection using the supernova fields of the Dark Energy Survey (DES). We used a quasar catalog from an overlapping portion of the SDSS Stripe 82 region to quantify the completeness and efficiency of selection methods involving color, probabilistic modeling, variability, and combinations of color/probabilistic modeling with variability. In all cases, we considered only objects that appear as point sources in the DES images. We examine color selection methods based on the Wide-field Infrared Survey Explorer (WISE) (Wright et al. 2010AJ....140.1868W) mid-IR W1-W2 color, a mixture of WISE and DES colors (g-i and i-W1), and a mixture of Vista Hemisphere Survey (McMahon et al. 2013Msngr.154...35M) and DES colors (g-i and i-K). For probabilistic quasar selection, we used XDQSO, an algorithm that employs an empirical multi-wavelength flux model of quasars to assign quasar probabilities. Our variability selection uses the multi-band {chi}^2^-probability that sources are constant in the DES Year 1 griz-band light curves. The completeness and efficiency are calculated relative to an underlying sample of point sources that are detected in the required selection bands and pass our data quality and photometric error cuts. We conduct our analyses at two magnitude limits, i<19.8 mag and i<22 mag. For the subset of sources with W1 and W2 detections, the W1-W2 color or XDQSOz method combined with variability gives the highest completenesses of >85% for both i-band magnitude limits and efficiencies of >80% to the bright limit and >60% to the faint limit; however, the giW1 and giW1+variability methods give the highest quasar surface densities. The XDQSOz method and combinations of W1W2/giW1/XDQSOz with variability are among the better selection methods when both high completeness and high efficiency are desired. We also present the OzDES Quasar Catalog of 1263 spectroscopically confirmed quasars from three years of OzDES observation in the 30 deg^2^ of the DES supernova fields. The catalog includes quasars with redshifts up to z~4 and brighter than i=22 mag, although the catalog is not complete up to this magnitude limit.
1245. Australia Telescope Chandra Deep Field-South and SDSS Stripe 82 20-GHz Sources
ID:
ivo://nasa.heasarc/atcdfsss82
Title:
Australia Telescope Chandra Deep Field-South and SDSS Stripe 82 20-GHz Sources
Short Name:
ATCDFSSS82
Date:
21 Feb 2025
Publisher:
NASA/GSFC HEASARC
Description:
This table contains a source catalog, one of the first results from a deep, blind radio survey carried out at 20 GHz with the Australia Telescope Compact Array, with follow-up observations at 5.5, 9 and 18 GHz. The Australia Telescope 20GHz (AT20G) deep pilot survey covers a total area of 5 deg&lt;sup&gt;2&lt;/sup&gt; in the Chandra Deep Field South and in Stripe 82 of the Sloan Digital Sky Survey. The authors estimate the survey to be 90% complete above 2.5 mJy. Of the 85 sources detected, 55% have steep spectra (spectral index alpha&lt;sub&gt;1.4&lt;/sub&gt;&lt;sup&gt;20&lt;/sup&gt; &lt; -0.5) and 45% have flat or inverted spectra (alpha&lt;sub&gt;1.4&lt;/sub&gt;&lt;sup&gt;20&lt;/sup&gt; &gt;= -0.5). The steep-spectrum sources tend to have single power-law spectra between 1.4 and 18 GHz, while the spectral indices of the flat- or inverted-spectrum sources tend to steepen with frequency. Among the 18 inverted-spectrum (alpha&lt;sub&gt;1.4&lt;/sub&gt;&lt;sup&gt;20&lt;/sup&gt; &gt;= 0.0) sources, 10 have clearly defined peaks in their spectra with alpha&lt;sub&gt;1.4&lt;/sub&gt;&lt;sup&gt;5.5&lt;/sup&gt; &gt; 0.15 and alpha&lt;sub&gt;9&lt;/sub&gt;&lt;sup&gt;18&lt;/sup&gt; &lt; -0.15. On a 3-yr time-scale, at least 10 sources varied by more than 15 percent at 20 GHz, showing that variability is still common at the low flux densities probed by the AT20G-Deep Pilot (AT20GDP) survey. The AT20G-Deep Pilot survey was carried out with he ATCA in 2009 July, shortly after the telescope was provided with a new wide-bandwidth correlator, the CABB. As a result of this upgrade to the telescope, the observing bandwidth was increased by a factor of 16, from 2x128 to 2x2048 MHz, in all bands (ranging from 1.1 to 105 GHz), greatly increasing the sensitivity of continuum observations. These observations were made in continuum mode using two 2048-MHz CABB bands centered at 19 and 21 GHz, with each 2048-MHz band divided into 2048 1-MHz channels. All four Stokes parameters were measured. This table was created by the HEASARC in August 2015 based on the union of &lt;a href="https://cdsarc.cds.unistra.fr/ftp/cats/J/MNRAS/439/1212"&gt;CDS Catalog J/MNRAS/439/1212&lt;/a&gt; files table2.dat (the 50 sources in the 3-hr field) and table3.dat (the 35 sources in the 21-hr field). This is a service provided by NASA HEASARC .
1246. Australia Telescope Compact Array AKARI Deep Field South 20-cm Source Catalog
ID:
ivo://nasa.heasarc/atcaadfs20
Title:
Australia Telescope Compact Array AKARI Deep Field South 20-cm Source Catalog
Short Name:
ATCAADFS20
Date:
21 Feb 2025
Publisher:
NASA/GSFC HEASARC
Description:
The results of a deep radio survey at a wavelength of 20 cm are reported for a region containing the AKARI Deep Field South (ADF-S) near the South Ecliptic Pole (SEP), using the Australia Telescope Compact Array (ATCA). The survey (hereafter referred to as the ATCA-ADFS survey) has 1-sigma detection limits ranging from 18.7 to 50 microJansky per beam (&micro;Jy/beam, over an area of ~1.1 deg&lt;sup&gt;2&lt;/sup&gt;, and ~2.5 deg&lt;sup&gt;2&lt;/sup&gt; to lower sensitivity. The observations, data reduction and source count analysis are presented in the paper, along with a description of the overall scientific objectives, and a catalog containing 530 radio sources detected with a resolution of 6.2 x 4.9 arcseconds (contained herein). The AKARI Deep Field South survey was primarily made in the far-infrared at wavelengths of 65, 90, 140, 160 micron (&micro;m) over a 12 deg&lt;sup&gt;2&lt;/sup&gt; area with the AKARI Far-Infrared Surveyor (FIS) instrument, with shallower mid-infrared coverage at 9 and 18 um using the AKARI Infrared Camera (IRC) instrument. In addition to the wide survey, deeper mid-infrared pointed observations, using the IRC, covering ~0.8 deg&lt;sup&gt;2&lt;/sup&gt; and reaching 5-sigma sensitivities of 16, 16, 74, 132, 280 and 580 uJy at 3.2, 4.6, 7, 11, 15 and 24 um, respectively, were also carried out. The radio observations were collected over a 13 day period in 2007 July using the ATCA operated at 1.344 and 1.432 GHz. The total integration time for the 2007 observations was 120 hours. The 2007 data were augmented with a further deep observation made in 2008 December over five nights towards a single pointing position at the ADF-S, which lay just off center of the larger ATCA-ADFS field reported here. This added a further 50 h of integration time. The data were processed in exactly the same way as that from the 2007 observing sessions. Note that in the terminology of the authors, a radio component is described as a region of radio emission represented by a Gaussian shaped object in the map. Close radio doubles are represented by two Gaussians and are deemed to consist of two components, which make up a single source. A selection of radio sources with multiple components is shown in Fig. 3 of the reference paper. This table was created by the HEASARC in November 2013 based on &lt;a href="https://cdsarc.cds.unistra.fr/ftp/cats/J/MNRAS/427/1830"&gt;CDS Catalog J/MNRAS/427/1830&lt;/a&gt; file table2.dat. This is a service provided by NASA HEASARC .
1247. Australia Telescope ESO Slice Project 1.4-GHz Source Catalog
ID:
ivo://nasa.heasarc/atesp1p4gh
Title:
Australia Telescope ESO Slice Project 1.4-GHz Source Catalog
Short Name:
ATESP1P4GH
Date:
21 Feb 2025
Publisher:
NASA/GSFC HEASARC
Description:
The Australia Telescope ESO Slice Project (ATESP) survey is a radio survey which was accomplished with the Australia Telescope Compact Array (ATCA) at 1.4 GHz over the region covered by the ESO Slice Project (ESP: Vettolani et al. 1997, A&amp;A, 325, 954) galaxy redshift survey. This 26-degree&lt;sup&gt;2&lt;/sup&gt; region is centered at Declination -40 degrees, and ranges in RA from 22&lt;sup&gt;h&lt;/sup&gt; 30&lt;sup&gt;m&lt;/sup&gt; to 01&lt;sup&gt;h&lt;/sup&gt; 15&lt;sup&gt;m&lt;/sup&gt;. The ATESP survey consisted of 16 radio mosaics with 8 x 14 arcseconds resolution and uniform sensitivity (1 sigma noise level of ~ 79 microJansky) over the whole area of the ESP redshift survey. According to the reference paper, the final 6-sigma ATESP catalog contained 2960 sources down to a detection limit of ~ 0.5 mJy (6 sigma), 1402 of which are sub-mJy sources, and 189 of which are multiple sources (168 doubles, 19 triples and 2 quadruples). This table contains the list of 6-sigma or more sources detected in the ATESP survey. For composite sources with multiple components, the individual components each have entries in this table, and there is also an entry for the entire source. Based on the numbers quoted above, this would imply that there should be (2960 + 2*168 + 3*19 + 4*2) = 3361 entries in this table. The HEASARC notes that there are actually 3370 entries in the CDS version of this table that the present table is based on, 169 of which are doubles, 19 triples and 2 quadruples, implying that this version has 2967 sources, slightly more than the number quoted in the reference paper. This table was created by the HEASARC in November 2012 based on the &lt;a href="https://cdsarc.cds.unistra.fr/ftp/cats/VIII/63"&gt;CDS Catalog VIII/63&lt;/a&gt; file atesp.dat. This is a service provided by NASA HEASARC .
1248. Australia Telescope 2FGL Unassociated Sources Radio Source Catalog
ID:
ivo://nasa.heasarc/at2fglus
Title:
Australia Telescope 2FGL Unassociated Sources Radio Source Catalog
Short Name:
AT2FGLUS
Date:
21 Feb 2025
Publisher:
NASA/GSFC HEASARC
Description:
The authors report results of the first phase of observations with the Australia Telescope Compact Array (ATCA) at 5 and 9 GHz of the fields around 411 gamma-ray sources having declinations less than +10 degrees which were detected by the Fermi Gamma-ray Space Telescope, but marked as unassociated in the 2nd Fermi Large-Area Telescope (2FGL) Catalog (available at the HEASARC as the FERMILPSC table). They have detected 424 radio sources with flux densities in the range from 2 mJy to 6 Jy in the fields of 283 gamma-ray sources within their gamma-ray position error ellipses (drawn to cover the area of 99 per cent probability of their localization). Of these, 146 objects were detected in both 5- and 9-GHz bands. The authors found 84 sources with spectral indices flatter than -0.5 in their sample. The majority of detected sources are weaker than 100 mJy and for this reason were not found in previous surveys. Approximately 1/3 of this sample, 128 objects, have the probability of being associated which is more than 10 times the probability of their being a background source found in the vicinity of the gamma-ray object by chance. This table contains the catalog of positions of these radio sources, estimates of their flux densities and their spectral indices, when available. This table was created by the HEASARC in July 2013 based on the electronic versions of Tables 1, 2 and 3 from the reference paper which were obtained from the MNRAS web site. This is a service provided by NASA HEASARC .
1249. Australia Telescope 20-GHz (AT20G) High-Angular Resolution Catalog
ID:
ivo://nasa.heasarc/at20gharc
Title:
Australia Telescope 20-GHz (AT20G) High-Angular Resolution Catalog
Short Name:
AT20GHARC
Date:
21 Feb 2025
Publisher:
NASA/GSFC HEASARC
Description:
This table contains the high-angular-resolution catalog for the Australia Telescope 20-GHz (AT20G) survey, using the high-angular-resolution 6-km antenna data at the baselines of ~4500 m of the Australia Telescope Compact Array (ATCA). The authors have used the data to produce the visibility catalog that separates the compact active galactic nuclei (AGNs) from the extended radio sources at the 0.15-arcsecond angular scale, corresponding to the linear size scale of 1 kpc at redshifts higher than 0.7. They find the radio population at 20 GHz to be dominated by compact AGNs constituting 77% of the total sources in the AT20G. In the paper, they introduce the visibility-spectra diagnostic plot, produced using the AT20G cross-matches with lower frequency radio surveys at 1 GHz [the NRAO VLA Sky Survey (NVSS: Condon et al. 1998, AJ, 115, 1693) and the Sydney University Molonglo Sky Survey (SUMSS: Mauch et al. 2003, MNRAS, 342, 1117)], that separates the 20-GHz population into distinct sub-populations of the compact AGNs, the compact steep-spectrum (CSS) sources, the extended AGN-powered sources and extended flat-spectrum sources. The extended flat-spectrum sources include a local thermal emitting population of high-latitude planetary nebulae and also gravitational lens and binary black hole candidates among the AGNs. The authors find a smooth transition in properties between the CSS sources and the AGN populations. The visibility catalog, together with the main AT20G survey, provides an estimate of angular size scales for sources in the AT20G and an estimate of the flux arising from central cores of extended radio sources. The identification of the compact AGNs in the AT20G survey provides high-quality calibrators for high-frequency radio telescope arrays and very large baseline interferometry observations. This table was created by the HEASARC in December 2013 based on machine-readable versions of Tables 2 and 3 from the reference paper which were obtained from the MNRAS web site. This is a service provided by NASA HEASARC .
1250. Australia Telescope 20-GHz (AT20G) Survey Catalog
ID:
ivo://nasa.heasarc/at20g
Title:
Australia Telescope 20-GHz (AT20G) Survey Catalog
Short Name:
AT20G
Date:
21 Feb 2025
Publisher:
NASA/GSFC HEASARC
Description:
The Australia Telescope 20-GHz Survey (AT20G) is a blind radio survey carried out at 20 GHz with the Australia Telescope Compact Array (ATCA) from 2004 to 2008, and covers the whole sky south of declination 0 degrees. The AT20G source catalogue presented here is an order of magnitude larger than any previous catalogue of high-frequency radio sources, and includes 5890 sources above a 20-GHz flux-density limit of 40 mJy. All AT20G sources have total intensity and polarisation measured at 20 GHz, and most sources south of declination -15 degrees also have near-simultaneous flux-density measurements at 5 and 8 GHz. A total of 1559 sources were detected in polarised total intensity at one or more of the three frequencies. The completeness of the AT20G source catalog is 91% above 100 mJy/beam and 79% above 50 mJy/beam in regions south of Declination -15 degrees. North of -15 degrees, some observations of sources between 14 and 20 hours in RA were lost due to bad weather and could not be repeated, so the catalog completeness is lower in this region. Each detected source was visually inspected as part of the authors&#39; quality control processs, and so the reliability of the final catalog is essentially 100%. This table was created by the HEASARC in March 2010 based on the &lt;a href="https://cdsarc.cds.unistra.fr/ftp/cats/J/MNRAS/402/2403/"&gt;CDS Catalog J/MNRAS/402/2403/&lt;/a&gt; file at20gcat.dat. This is a service provided by NASA HEASARC .

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