Galactic Center 6 and 20cm survey Virtual Observatory Resource

Authors
  1. Lazio T.J.W.
  2. Cordes J.M.
  3. Published by
    CDS
Abstract

We have used the VLA to survey 10 fields at 20 cm (1658MHz) and 11 fields at 6 cm (5GHz) that are between 7' and 137' from SgrA*. Our objective was to identify extragalactic sources and measure their scattering diameters so as to constrain the GC-scattering region separation. In order to find sources within these fields, we have employed pdfCLEAN, a source detection algorithm in which sources are identified in an image by comparing the intensity histogram of the image to that expected from a noise-only image. We found over 100 sources, with the faintest sources being approximately 3 mJy. The average number of sources per field is approximately 10, though fields close to SgrA* tend to contain fewer sources. A number of Galactic sources are included in our source catalog. The double-lobed source 1LC 359.872+0.178, potentially an X-ray quiet version of 1E 1740.7-2942, a shell-like structure with a central point source, and a possible radio transient, are discussed in the paper.

Keywords
  1. radio-sources
  2. radio-continuum-emission
Bibliographic source Bibcode
1998ApJS..118..201L
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/118/201
IVOA Identifier IVOID
ivo://CDS.VizieR/J/ApJS/118/201
Document Object Identifer DOI
doi:10.26093/cds/vizier.21180201

Access

Web browser access HTML
http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/118/201
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/118/201
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/118/201
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/118/201/table3?
https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/118/201/table3?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/118/201/table3?
IVOA Cone Search SCS
For use with a cone search client (e.g., TOPCAT).
http://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/118/201/table4?
https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/118/201/table4?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/118/201/table4?

History

2000-01-24T07:47:08Z
Resource record created
2000-01-24T06:47:12Z
Updated
2000-01-24T07:47:08Z
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