Radio survey around North Ecliptic Pole Virtual Observatory Resource

Authors
  1. KOLLGAARD R.I.
  2. BRINKMANN W.
  3. MCMATH CHESTER M.
  4. FEIGELSON E.D.,HERTZ P.
  5. REICH P.
  6. WIELEBINSKI R.
  7. Published by
    CDS
Abstract

A 29.3deg^2 region surrounding the north ecliptic pole (NEP; R.A.=18h00m, Dec.=+66d30m) was mapped with the Very Large Array at 1.5GHz to support the deepest portion of the ROSAT all-sky soft X-ray survey. The resulting VLA-NEP survey catalog contains 2435 radio sources with flux densities in the range of 0.3-1000mJy, including over 200 fainter than 1mJy. The 28 fields of the inner 1.5deg have noise levels sigma ~=60uJy, and the 85 fields centered between 1.5deg and 3.0deg from the NEP have sigma ~=120uJy. The typical spatial resolution is 20" HPBW, and most positions are accurate to <2". Approximately 6% of the sources are found to be extended with size >30". We have compared the VLA-NEP catalog with four other radio catalogs made at lower resolution, as well as with the NASA Extragalactic Database and find counterparts for ~18% of the VLA-NEP objects. The normalized, differential radio source count is in agreement with the previous studies. Between 1 and 150mJy the slope of the logN-logS relation is 0.68+/-0.03. Addresses: Kollgaard R.I. <rik@astro.psu.edu> McMath Chester M. <chester@astro.psu.edu> Feigelson E.D. <edf@Feigelson> Department of Astronomy and Astrophysics, Pennsylvania State University, University Park, PA 16802 Brinkmann W. <wpb@ibma.ipp-garching.mpg.de> Max-Planck-Institut fur Extraterrstrische Physik, Giessenbach strasse, 85740 Garching, Germany Hertz P. <hertz@xip.nrl.navy.mil> E.O. Hulburt Center for Space Research, Naval Research Laboratory, Code 7621.5, Washinton, DC 20375-5352 Reich P. <p395pat@mpifr-bonn.mpg.de> Wielebinski R. <rwielebinski@mpifrbonn.mpg.de> Max-Planck-Institut fur Radioastronomie, Auf dem Hugel 69, 53121 Bonn, Germany

Keywords
  1. radio-sources
Bibliographic source Bibcode
1994ApJS...93..145K
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/93/145
IVOA Identifier IVOID
ivo://CDS.VizieR/J/ApJS/93/145
Document Object Identifer DOI
doi:10.26093/cds/vizier.20930145

Access

Web browser access HTML
http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/93/145
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/93/145
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/93/145
IVOA Table Access TAP
http://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).
http://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/93/145/table2?
https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/93/145/table2?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/93/145/table2?

History

1997-12-09T21:20:51Z
Resource record created
1997-12-09T20:21:00Z
Updated
1997-12-09T21:20:51Z
Created

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