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The Astrophysical Journal Supplement Series, 171:61-71, 2007 July
2007. The American Astronomical Society. All rights reserved. Printed
in U.S.A.
*CRATES: An All-Sky Survey of Flat-Spectrum Radio Sources*
Stephen E. Healey , 1 Roger W. Romani , 1
Gregory B. Taylor , 2 Elaine M. Sadler , 3
Roberto Ricci , 4 Tara Murphy , 3, 5
James S. Ulvestad , 6 and Joshua N. Winn 7
/Received 2006 December 19; accepted 2007 February 5/
*ABSTRACT*
We have assembled an 8.4 GHz survey of bright, flat-spectrum (? >
-0.5) radio sources with nearly uniform extragalactic (|/b/| > 10 &j0;
) coverage for sources brighter than /S/_4.8 GHz = 65 mJy. The
catalog is assembled from existing observations (especially CLASS and
the Wright et al. PMN-CA survey), augmented by reprocessing of
archival VLA and ATCA data and by new observations to fill in
coverage gaps. We refer to this program as CRATES, the Combined Radio
All-Sky Targeted Eight GHz Survey. The resulting catalog provides
precise positions, subarcsecond structures, and spectral indices for
some 11,000 sources. We describe the morphology and spectral index
distribution of the sample and comment on the survey's power to
select several classes of interesting sources, especially high-energy
blazars. Comparison of CRATES with other high-frequency surveys also
provides unique opportunities for identification of high-power radio
sources.
/Subject headings:/ galaxies: active?quasars: general?surveys
/Online material: /machine-readable tables
1 <#cfn1> Department of Physics/KIPAC, Stanford University,
Stanford, CA 94305; sehealey@astro.stanford.edu