Optically Bright Extragalactic Radio Sources Virtual Observatory Resource

Authors
  1. Petrov L.
  2. Published by
    CDS
Abstract

It is expected that the European Space Agency mission Gaia will make possible to determine coordinates in the optical domain of more than 500,000 quasars. In 2006, a radio astrometry project was launched with the overall goal to make comparison of coordinate systems derived from future space-born astrometry instruments with the coordinate system constructed from analysis of the global very long baseline interferometry (VLBI) more robust. Investigation of their rotation, zonal errors, and the non-alignment of the radio and optical positions caused by both radio and optical structures are important for validation of both techniques. In order to support these studies, the densification of the list of compact extragalactic objects that are bright in both radio and optical ranges is desirable. A set of 105 objects from the list of 398 compact extragalactic radio sources with declinations >-10{deg} was observed with the VLBA+EVN with the primary goal of producing their images with milliarcsecond resolution. These sources are brighter than 18 magnitude at V band, and they were previously detected at the European VLBI network. In this paper coordinates of observed sources have been derived with milliarcsecond accuracies from analysis of these VLBI observations following the method of absolute astrometry. The catalog of positions of 105 target sources is presented. The accuracies of sources coordinates are in the range of 0.3 to 7mas, with the median 1.1mas.

Keywords
  1. very-long-baseline-interferometry
  2. radio-sources
Bibliographic source Bibcode
2011AJ....142..105P
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/142/105
IVOA Identifier IVOID
ivo://CDS.VizieR/J/AJ/142/105
Document Object Identifer DOI
doi:10.26093/cds/vizier.51420105

Access

Web browser access HTML
http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/142/105
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/142/105
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/142/105
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/AJ/142/105/table2?
https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/142/105/table2?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/142/105/table2?

History

2012-03-15T14:51:22Z
Resource record created
2012-03-15T14:51:22Z
Created
2012-05-20T10:11:22Z
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