Radio Color-Color Diagrams for Extragalactic Sources

Details Radio Color-Color Diagrams for Extragalactic Sources Radio Color-Color Diagrams for Extragalactic Sources

Dec 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aas...201.4804k&link_type=abstract

American Astronomical Society, 201st AAS Meeting, #48.04; Bulletin of the American Astronomical Society, Vol. 34, p.1180

Astronomy and Astrophysics

Astronomy

2

Scientific paper

We positionally match the 6 cm GB6 catalog, the 20 cm FIRST and NVSS catalogs, and the 92 cm WENSS catalog, and find 24,000 probable matches in about 3,000 deg2 of sky. These data are used to construct radio ``color-magnitude-morphology'' diagrams. We investigate the structure seen in the distribution of sources in these diagrams. This radio database is matched to the SDSS Data Release 1 catalogs to obtain optical identifications. We examine the distributions of quasars and galaxies in the radio color-magnitude-morphology diagrams, and of radio sources in optical color-magnitude-morphology diagrams, to characterize the nature of the ensemble of extragalactic radio sources.

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