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591. Final GMRT-TAU catalogue
ID:
ivo://CDS.VizieR/J/MNRAS/462/2904
Title:
Final GMRT-TAU catalogue
Short Name:
J/MNRAS/462/2904
Date:
21 Oct 2021
Publisher:
CDS
Description:
We present observations of three active sites of star formation in the Taurus molecular cloud complex taken at 323 and 608MHz (90 and 50cm, respectively) with the Giant Metrewave Radio Telescope (GMRT). Three pointings were observed as part of a pathfinder project, targeted at the young stellar objects (YSOs) L1551 IRS 5, T Tau and DG Tau (the results for these target sources were presented in a previous paper). In this paper, we search for other YSOs and present a survey comprising of all three fields; a by-product of the large instantaneous field of view of the GMRT. The resolution of the survey is of order 10 arcsec and the best rms noise at the centre of each pointing is of order 100{mu}Jy/beam at 323MHz and 50{mu}Jy/beam at 608MHz. We present a catalogue of 1815 and 687 field sources detected above 5{sigma}_rms_ at 323 and 608MHz, respectively. A total of 440 sources were detected at both frequencies, corresponding to a total unique source count of 2062 sources. We compare the results with previous surveys and showcase a sample of extended extragalactic objects. Although no further YSOs were detected in addition to the target YSOs based on our source-finding criteria, these data can be useful for targeted manual searches, studies of radio galaxies or to assist in the calibration of future observations with the Low-Frequency Array towards these regions.
592. FIREWORKS photometry of GOODS CDF-S
ID:
ivo://CDS.VizieR/J/ApJ/682/985
Title:
FIREWORKS photometry of GOODS CDF-S
Short Name:
J/ApJ/682/985
Date:
21 Oct 2021
Publisher:
CDS
Description:
We present a Ks-selected catalog, dubbed FIREWORKS, for the Chandra Deep Field-South (CDF-S) containing photometry in the U_38_, B_435_, B, V, V_606_, R, i_775_, I, z_850_, J, H, Ks, [3.6um], [4.5um], [5.8um], [8.0um], and MIPS [24um] bands. The imaging has a typical K^tot^_s,AB_ limit of 24.3mag (5{sigma}) and coverage over 113arcmin^2^ in all bands and 138arcmin^2^ in all bands but H. We cross-correlate our catalog with the 1Ms X-ray catalog by Giacconi et al. (2002, Cat. J/ApJS/139/369) and with all available spectroscopic redshifts to date. We find and explain systematic differences in a comparison with the "z_850_+Ks"-selected GOODS-MUSIC catalog (Cat. J/A+A/449/951) that covers ~90% of the field. We exploit the U_38_-to-24um photometry to determine which Ks-selected galaxies at 1.5<z<2.5 have the brightest total IR luminosities and which galaxies contribute most to the integrated total IR emission. The answer to both questions is that red galaxies are dominating in the IR. This is true no matter whether color is defined in the rest-frame UV, optical, or optical-near-IR. We do find, however, that among the reddest galaxies in the rest-frame optical, there is a population of sources with only little mid-IR emission, suggesting a quiescent nature.
593. FIR properties of SDSS 0.1<z<5 quasars
ID:
ivo://CDS.VizieR/J/ApJ/811/58
Title:
FIR properties of SDSS 0.1<z<5 quasars
Short Name:
J/ApJ/811/58
Date:
21 Oct 2021
Publisher:
CDS
Description:
Using the public data from the Herschel wide-field surveys, we study the far-infrared properties of optical-selected quasars from the Sloan Digital Sky Survey. Within the common area of ~172deg^2^, we have identified the far-infrared counterparts for 354 quasars, among which 134 are highly secure detections in the Herschel 250um band (signal-to-noise ratios >=5). This sample is the largest far-infrared quasar sample of its kind, and spans a wide redshift range of 0.14<=z<=4.7. Their far-infrared spectral energy distributions, which are due to the cold-dust components within the host galaxies, are consistent with being heated by active star formation. In most cases (>~80%), their total infrared luminosities as inferred from only their far-infrared emissions (L_IR_^(cd)^) already exceed 10^12^L_{sun}_, and thus these objects qualify as ultra-luminous infrared galaxies. There is no correlation between L_IR_^(cd)^ and the absolute magnitudes, the black hole masses or the X-ray luminosities of the quasars, which further support that their far-infrared emissions are not due to their active galactic nuclei. A large fraction of these objects (>~50%-60%) have star-formation rates >~300M_{sun}_/yr. Such extreme starbursts among optical quasars, however, is only a few percent. This fraction varies with redshift, and peaks at around z~2. Among the entire sample, 136 objects have secure estimates of their cold-dust temperatures (T), and we find that there is a dramatic increasing trend of T with increasing L_IR_^(cd)^. We interpret this trend as the envelope of the general distribution of infrared galaxies on the (T, L_IR_^(cd)^) plane.
594. FIRST
ID:
ivo://nasa.heasarc/skyview/first
Title:
FIRST
Short Name:
FIRST
Date:
25 Apr 2025
Publisher:
NASA/GSFC HEASARC
Description:
The VLA FIRST (Faint Images of the Radio Sky at Twenty-centimeters) is a project designed to produce the radio equivalent of the Palomar Observatory Sky Survey over 10,000 square degrees of the North Galactic Cap. The <a href="https://sundog.stsci.edu/top.html"> FIRST home page </a> has details of the instrumentation, status of the project, and data available. Currently about 5000 images of approximately .775x.58 degrees are available. <P> These FIRST data have been retrieved from the <a href="ftp://archive.stsci.edu/pub/vla_first/data/"> FIRST FTP archive </a> at the <a href="https://www.stsci.edu/resources"> Space Telescope Science Institute</a>. <p> The FIRST survey is included on the <b>SkyView High Resolution Radio Coverage </b><a href="/images/high_res_radio.jpg"> map</a>. This map shows coverage on an Aitoff projection of the sky in equatorial coordinates. Provenance: The FIRST project team: R.J. Becker, D.H. Helfand, R.L. White M.D. Gregg. S.A. Laurent-Muehleisen.. This is a service of NASA HEASARC.
595. First AGILE catalog of gamma-ray sources
ID:
ivo://CDS.VizieR/J/A+A/506/1563
Title:
First AGILE catalog of gamma-ray sources
Short Name:
J/A+A/506/1563
Date:
21 Oct 2021
Publisher:
CDS
Description:
We present the first catalog of high-confidence {gamma}-ray sources detected by the AGILE satellite during observations performed from July 9, 2007 to June 30, 2008. Cataloged sources were detected by merging all the available data over the entire time period. AGILE, launched in April 2007, is an ASI mission devoted to {gamma}-ray observations in the 30MeV-50GeV energy range, with simultaneous X-ray imaging capability in the 18-60keV band. This catalog is based on Gamma-Ray Imaging Detector (GRID) data for energies greater than 100MeV. For the first AGILE catalog, we adopted a conservative analysis, with a high-quality event filter optimized to select {gamma}-ray events within the central zone of the instrument field of view (radius of 40{deg}). This is a significance-limited (4{sigma}) catalog, and it is not a complete flux-limited sample due to the non-uniform first-year AGILE sky coverage. The catalog includes 47 sources, 21 of which are associated with confirmed or candidate pulsars, 13 with blazars (7 FSRQ, 4 BL Lacs, 2 unknown type), 2 with HMXRBs, 2 with SNRs, 1 with a colliding-wind binary system, and 8 with unidentified sources.
596. FIRST-APM Source Catalog
ID:
ivo://CDS.VizieR/J/ApJS/143/1
Title:
FIRST-APM Source Catalog
Short Name:
J/ApJS/143/1
Date:
21 Oct 2021
Publisher:
CDS
Description:
We describe a program to identify optical counterparts to radio sources from the VLA FIRST survey using the Cambridge APM scans of the POSS-I plates. We use radio observations covering 4150deg^2^ of the north Galactic cap to a 20cm flux density threshold of 1.0mJy; the 382,892 sources detected all have positional uncertainties of <1" (radius of 90% confidence). Our description of the APM catalog, derived from the 148 POSS-I O and E plates covering this region, includes an assessment of its astrometric and photometric accuracy, a photometric recalibration using the Minnesota APS catalog, a discussion of the classification algorithm, and quantitative tests of the catalog's reliability and completeness. We go on to show how the use of FIRST sources as astrometric standards allows us to improve the absolute astrometry of the POSS plates by nearly an order of magnitude to ~0.15" rms. Matching the radio and optical catalogs yields counterparts for over 70,000 radio sources; we include detailed discussions of the reliability and completeness of these identifications as a function of optical and radio morphology, optical magnitude and color, and radio flux density. An analysis of the problem of radio sources with complex morphologies (e.g., double-lobed radio galaxies) is included. We conclude with a brief discussion of the source classes represented among the radio sources with identified counterparts.
597. First COMPTEL source catalogue
ID:
ivo://CDS.VizieR/J/A+AS/143/145
Title:
First COMPTEL source catalogue
Short Name:
J/A+AS/143/145
Date:
21 Oct 2021
Publisher:
CDS
Description:
The imaging Compton telescope COMPTEL aboard NASA's Compton Gamma-Ray Observatory (CGRO) has opened the MeV gamma-ray band as a new window to astronomy. COMPTEL provided the first complete all-sky survey in the energy range 0.75 to 30MeV. The catalogue, presented here, is largely restricted to published results. It contains firm as well as marginal detections of continuum and line emitting sources and presents upper limits for various types of objects. The numbers of the most significant detections are 32 for steady sources and 31 for gamma-ray bursters. Among the continuum sources, detected so far, are spin-down pulsars, stellar black-hole candidates, supernova remnants, interstellar clouds, nuclei of active galaxies, gamma-ray bursters, and the Sun during solar flares. Line detections have been made in the light of the 1.809MeV ^26^Al line, the 1.157MeV ^44^Ti line, the 847 and 1238keV ^56^Co lines, and the neutron capture line at 2.223MeV. For the identification of galactic sources, a modelling of the diffuse galactic emission is essential. Such a modelling at this time does not yet exist at the required degree of accuracy. Therefore, a second COMPTEL source catalogue will be produced after a detailed and accurate modelling of the diffuse interstellar emission has become possible.
598. First DENIS I-band extragalactic catalog
ID:
ivo://CDS.VizieR/J/A+AS/135/133
Title:
First DENIS I-band extragalactic catalog
Short Name:
J/A+AS/135/133
Date:
21 Oct 2021
Publisher:
CDS
Description:
REDCAT is the release of the provisional extragalactic catalogue constructed from the "Deep Near Infrared Southern Sky Survey" (DENIS). This catalogue contains 20260 galaxies with coordinates and I-band photometry (magnitude, diameter, axis ratio, position angle and a parameter related to the morphological type). In this new version photometric parameters are homogeneized to I-band measurements by Mathewson and Ford (1997, Cat. <J/ApJS/107/97>). Additional information on galaxies cross-identified with known objects can be obtained through the LEDA database at: http://www-obs.univ-lyon1.fr/leda/leda-consult.html This catalogue is the result of a tremendous work done along the chain Chile-Paris-Lyon. Many people are involved in this programm conducted by the P.I. N. Epchtein. We will not take the risk to mention them all. Their names will appear in forthcoming papers. The distribution on the sky is made of strips of 30 degrees in declination (180 frames per strip) south of +02{deg}. If you are satisfied with this catalogue, try to push the Community to support the DENIS project. Your suggestions are welcome for any improvement of this first release.
599. First Digitized Sky Survey: Blue Plates
ID:
ivo://nasa.heasarc/skyview/dss1b
Title:
First Digitized Sky Survey: Blue Plates
Short Name:
DSS1B
Date:
25 Apr 2025
Publisher:
NASA/GSFC HEASARC
Description:
This survey uses the POSS1 Blue plates. Provenance: Data taken by CalTech, Compression and distribution by Space Telescope Science Institute.. This is a service of NASA HEASARC.
600. First Digitized Sky Survey: Red Plates
ID:
ivo://nasa.heasarc/skyview/dss1r
Title:
First Digitized Sky Survey: Red Plates
Short Name:
DSS1R
Date:
25 Apr 2025
Publisher:
NASA/GSFC HEASARC
Description:
This survey is the POSS1 Red plates from the original POSS survey. It covers the sky north of -30 degrees declination. Provenance: Data taken by CalTech Compression and distribution by Space Telescope Science Institute.. This is a service of NASA HEASARC.

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