Celestial Reference Frame at 24 and 43GHz. II Virtual Observatory Resource

Authors

1. Charlot P.
2. Boboltz D.A.
3. Fey A.L.
4. Fomalont E.B.
5. Geldzahler B.J.,Gordon D.
6. Jacobs C.S.
7. Lanyi G.E.
8. Ma C.
9. Naudet C.J.
10. Romney J.D.,Sovers O.J.
11. Zhang L.D.

Published by

CDS

Abstract

We have measured the submilliarcsecond structure of 274 extragalactic sources at 24 and 43 GHz in order to assess their astrometric suitability for use in a high-frequency celestial reference frame (CRF). Ten sessions of observations with the Very Long Baseline Array have been conducted over the course of ~5 years, with a total of 1339 images produced for the 274 sources. There are several quantities that can be used to characterize the impact of intrinsic source structure on astrometric observations including the source flux density, the flux density variability, the source structure index, the source compactness, and the compactness variability.

Keywords

1. optical-observation
2. catalogs
3. astrometry
4. very-long-baseline-interferometry
5. quasars

Bibliographic source Bibcode

2010AJ....139.1713C

See also HTML

https://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/139/1713

IVOA Identifier IVOID

ivo://CDS.VizieR/J/AJ/139/1713

Document Object Identifer DOI

doi:10.26093/cds/vizier.51391713

Access

Web browser access HTML

http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/139/1713
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/139/1713
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/139/1713

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/139/1713/table2?
https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/139/1713/table2?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/139/1713/table2?