1.4GHz observations of Stripe 82 Virtual Observatory Resource

Authors
  1. Hodge J.A.
  2. Becker R.H.
  3. White R.L.
  4. Richards G.T.
  5. Zeimann G.R.
  6. Published by
    CDS
Abstract

We present a high-resolution radio survey of the Sloan Digital Sky Survey (SDSS) Southern Equatorial Stripe, a.k.a. Stripe 82. This 1.4GHz survey was conducted 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 52{mu}Jy/beam over 92deg^2^. This is the deepest 1.4GHz survey to achieve this large of an area, filling a gap in the phase space between small, deep and large, shallow surveys. It also serves as a pilot project for a larger high-resolution survey with the Expanded Very Large Array. We discuss the technical design of the survey and details of the observations, and we outline our method for data reduction. We present a catalog of 17969 isolated radio components, for an overall source density of ~195sources/deg^2^. The astrometric accuracy of the data is excellent, with an internal check utilizing multiply observed sources yielding an rms scatter of 0.19" in both right ascension and declination. A comparison to the SDSS-DR7 Quasar Catalog further confirms that the astrometry is well tied to the optical reference frame, with mean offsets of 0.02+/-0.01" in right ascension, and 0.01+/-0.02" in declination. A check of our photometry reveals a small, negative CLEAN-like bias on the level of 35{mu}Jy. We report on the catalog completeness, finding that 97% of FIRST-detected quasars are recovered in the new Stripe 82 radio catalog, while faint, extended sources are more likely to be resolved out by the resolution bias. We conclude with a discussion of the optical counterparts to the catalog sources, including 76 newly detected radio quasars.

Keywords
  1. radio-sources
  2. surveys
  3. visible-astronomy
  4. sloan-photometry
Bibliographic source Bibcode
2011AJ....142....3H
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/142/3
IVOA Identifier IVOID
ivo://CDS.VizieR/J/AJ/142/3
Document Object Identifer DOI
doi:10.26093/cds/vizier.51420003

Access

Web browser access HTML
https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/142/3
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/142/3
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/142/3
IVOA Table Access TAP
https://tapvizier.cds.unistra.fr/TAPVizieR/tap
Run SQL-like queries with TAP-enabled clients (e.g., TOPCAT).
IVOA Cone Search SCS
For use with a cone search client (e.g., TOPCAT).
https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/142/3/stripe82?
https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/142/3/stripe82?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/142/3/stripe82?

History

2016-02-24T15:43:12Z
Resource record created
2016-02-24T15:43:12Z
Created
2017-09-29T09:03:18Z
Updated

Contact

Name
CDS support team
Postal Address
CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France
E-Mail
cds-question@unistra.fr