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481. Very Nearby Galaxy Survey
ID:
ivo://irsa.ipac/Herschel/Images/VNGS
Title:
Very Nearby Galaxy Survey
Short Name:
VNGS
Date:
27 Oct 2022 19:00:00
Publisher:
NASA/IPAC Infrared Science Archive
Description:
The Very Nearby Galaxy Survey (VNGS) is a Herschel Key Program (KPGT_cwilso01_1) to measure the emission spectrum from dust as well as important cooling lines from the gaseous interstellar medium in a sample of 13 very nearby galaxies (M51, M81, NGC2403, NGC891, M83, M82, Arp220, NGC4038/39, NGC1068, NGC4151, CenA, NGC4125, and NGC205). These galaxies have been chosen to probe as wide a region in galaxy parameter space as possible while maximizing the achievable spatial resolution and are already well-studied from X-ray and optical through to radio wavelengths. The far-infrared and submillimeter wavelengths probed by Herschel are absolutely crucial for understanding the physical processes and properties of the interstellar medium, the interplay between star formation and the interstellar medium in galaxies, and how they may depend on the wider galaxian environment.
482. VGPS Archive
ID:
ivo://cadc.nrc.ca/VGPS
Title:
VGPS Archive
Short Name:
VGPS Archive
Date:
15 Jun 2019 21:15:06
Publisher:
Canadian Astronomy Data Centre
Description:
483. Viking 1 Biology Experiment
ID:
ivo://gov.nasa.gsfc.nssdc/viking1
Title:
Viking 1 Biology Experiment
Short Name:
Viking 1 Biology
Date:
24 Apr 2006 19:57:18
Publisher:
NASA
Description:
Viking 1 Gas Exchange, Labeled Release, and Pyrolytic Release Data on Microfilm. These data, supplied by the investigation team, are on 16- mm microfilm and consist of descriptions of the commands that were sent to operate the three instruments, and tabulations of raw and reduced data returned. The command data include Mars time for each experiment sequence, the commands sent, predicted data points for each command file that were used to time tag the data when it came back from the instrument, and a summary of the major events of each command sequence.
484. Viking 2 Biology Experiment
ID:
ivo://gov.nasa.gsfc.nssdc/viking2
Title:
Viking 2 Biology Experiment
Short Name:
Viking 2 Biology
Date:
24 Apr 2006 19:43:32
Publisher:
NASA
Description:
Viking 2 Gas Exchange, Labeled Release, and Pyrolytic Release Data on Microfilm. These data, supplied by the investigation team, are on 16- mm microfilm and consist of descriptions of the commands that were sent to operate the three instruments, and tabulations of raw and reduced data returned. The command data include: Mars time for each experiment sequence, the commands sent, predicted data points for each command file that were used to time tag the data when it came back from the instrument, and a summary of the major events of each command sequence.
485. VizieR SIA service
ID:
ivo://CDS.VizieR/siap
Title:
VizieR SIA service
Short Name:
VizieR SIA
Date:
05 May 2016 18:00:00
Publisher:
CDS VizieR service
Description:
This service provides SIA access for VizieR associated data in FITS format.
486. VizieR SSA service
ID:
ivo://CDS.VizieR/ssap
Title:
VizieR SSA service
Short Name:
VizieR SSA
Date:
27 May 2016 18:00:00
Publisher:
CDS VizieR service
Description:
This service provides SSA access for VizieR associated data in FITS/VOTable format.
487. VLA-A Array AL218 Texas Survey Source Snapshots (AL218)
ID:
ivo://mast.stsci/siap/al218
Title:
VLA-A Array AL218 Texas Survey Source Snapshots (AL218)
Short Name:
VLA.AL218
Date:
23 Jul 2020 19:30:09
Publisher:
Space Telescope Science Institute Archive
Description:
The VLA-A Texas Survey consists of a sample of objects extracted from the earlier Texas Interferometer 365 MHz Survey of radio sources covering a strip of sky from approximately -35.5 degrees declination to +71.5 degrees declination, and complete to flux densities of 0.25 Jy, with positional accuracies of ~1 arcsecond in RA and DEC. The sample is a subset of 71 sources drawn from the area of one optical Schmidt sky survey plate (covering ~6.5x6.5 degrees), Region S861, centered at approximately RA=190.640822109, DEC=-0.273834224277 (J2000), from the UK Schmidt SRC-J Survey. The Region S861 was initially chosen because it represented the combination of the deepest UK Schmidt plate material (the best optical survey material available at the time of the sample definition in 1989) and the highest galactic latitude, thereby emphasizing the extragalactic nature of the survey and also maximizing the likelihood of having more optical detections. Much more recently, the area of this plate has been covered by a number of important sky surveys including 2MASS, NRAO VLA FIRST, and the Sloan Digital Sky Survey (SDSS) which is now public. In particular, the availability of the Sloan Survey data provides 5-band ugriz color information at optical wavelengths, to depth of g,r=22.2.
488. VLA Faint Images of the Radio Sky at Twenty Centimeters (FIRST)
ID:
ivo://mast.stsci/siap/vla-first
Title:
VLA Faint Images of the Radio Sky at Twenty Centimeters (FIRST)
Short Name:
VLA-FIRST
Date:
23 Jul 2020 19:41:49
Publisher:
Space Telescope Science Institute Archive
Description:
Faint Images of the Radio Sky at Twenty-cm (FIRST) is a systematic survey of the North and South Galactic caps begun in 1993, using the NRAO Very Large Array (VLA) . Typical images are comprised of 1150x1550 1.8" pixels with 5" resolution. Source catalogs are also available including peak and integrated flux densities generated from the high resolution coadded images. The survey yields very accurate (<1 arcsec rms) radio positions of faint (>1 mJy/beam) compact sources. The areas observed were chosen to coincide with the Sloan Digital Sky Survey.
489. VLA Low-frequency Sky Survey
ID:
ivo://nasa.heasarc/skyview/vlss
Title:
VLA Low-frequency Sky Survey
Short Name:
VLSS
Date:
07 Mar 2025
Publisher:
NASA/GSFC HEASARC
Description:
The VLA Low-Frequency Sky Survey (VLSS) is a 74 MHz continuum survey covering the entire sky north of -30 degrees declination. Using the VLA in BnA and B-configurations, it will map the entire survey region at a resolution of 80" and with an average rms noise of 0.1 Jy/beam. <p> This version include the data from the VLSS redux which increased the coverage region slightly and substantially improved the data reduction. Details are in the Lane et al. (2012) reference. Provenance: <b>VLSS Team: </b>R.A. Perley, J.J. Condon, W.D. Cotton (NRAO); A.S. Cohen, W.M. Lane (NRC/NRL), N.E. Kassim, T.J.W. Lazio (NRL), W.C. Erickson (UMd). This is a service of NASA HEASARC.
490. VLA Survey of SDSS Stripe 82
ID:
ivo://nasa.heasarc/skyview/stripe82vla
Title:
VLA Survey of SDSS Stripe 82
Short Name:
Stripe82VLA
Date:
07 Mar 2025
Publisher:
NASA/GSFC HEASARC
Description:
This survey is a deep, high resolution radio survey of a relatively small region that has particularly deep coverage in the Sloan Digital Sky Survey. As described in the reference abstract: This is a high-resolution radio survey of the Sloan Digital Sky Survey (SDSS) Southern Equatorial Stripe, a.k.a., Stripe 82. This 1.4 GHz survey was conducted from 2007 to 2009 with the Very Large Array primarily in the A-configuration, with supplemental B-configuration data to increase sensitivity to extended structure. The survey has an angular resolution of 1.8" and achieves a median rms noise of 53 microJy/beam over 92 square degrees. This is the deepest 1.4 GHz survey to achieve this large of an area filling in the phase space between small&amp;deep and large&amp;shallow surveys. <p> The astrometric accuracy of the data is excellent with errors in observed sources of 0.10" in both RA and declination. A comparison with the SDSS DR7 Quasar Catalog confirms that the astrometry is well tied to the optical reference frame with mean offsets of 0.02+/-0.01" in RA and 0.01+/-0.02 in declination. Provenance: TBD. This is a service of NASA HEASARC.

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