WSRT survey of Cygnus OB2 Virtual Observatory Resource

Authors
  1. Setia Gunawan D.Y.A.
  2. de Bruyn A.G.
  3. van der Hucht K.A.
  4. Williams P.M.
  5. Published by
    CDS
Abstract

We present a radio continuum survey at 1400 and 350 MHz of a region of 2{deg}x2{deg} centered on the Cygnus OB2 association (d=1.7kpc), using the Westerbork Synthesis Radio Telescope (WSRT) with angular resolutions of, respectively, 13" and 55". The resulting 5{sigma} flux-density limits of, respectively, ~2mJy and ~10-15mJy are a significant improvement over previous surveys. We detected 210 discrete sources with sizes less than 1.9{theta}beam (beam size), 98 of which at both frequencies. We also detected 28 resolved sources (sizes>1.9{theta}beam) still having well-defined peak intensities. The observed spectral index {alpha}^1400^_350_ distribution and source count strongly suggest an excess of sources of Galactic origin in the direction of Cyg OB2.

Keywords
  1. stellar-associations
  2. radio-sources
Bibliographic source Bibcode
2003ApJS..149..123S
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/149/123
IVOA Identifier IVOID
ivo://CDS.VizieR/J/ApJS/149/123
Document Object Identifer DOI
doi:10.26093/cds/vizier.21490123

Access

Web browser access HTML
http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/149/123
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/149/123
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/149/123
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/149/123/table2?
https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/149/123/table2?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/149/123/table2?

History

2005-06-06T16:39:43Z
Resource record created
2005-06-06T16:39:43Z
Created
2005-06-06T16:39:54Z
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