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Title:
CGRaBS: An All-Sky Survey of Gamma-Ray Blazar Candidates
Authors:
Healey, Stephen E.; Romani, Roger W.; Cotter, Garret; Michelson, Peter F.; Schlafly, Edward F.; Readhead, Anthony C. S.; Giommi, Paolo; Chaty, Sylvain; Grenier, Isabelle A.; Weintraub, Lawrence C.
Affiliation:
AA(Department of Physics/KIPAC, Stanford University, Stanford, CA 94305 ), AB(Department of Physics/KIPAC, Stanford University, Stanford, CA 94305 ), AC(Department of Astrophysics, University of Oxford, Oxford OX1 3RH, UK.), AD(Department of Physics/KIPAC, Stanford University, Stanford, CA 94305 ), AE(Department of Physics/KIPAC, Stanford University, Stanford, CA 94305 ), AF(Department of Astronomy, California Institute of Technology, Pasadena, CA 91125.), AG(ASI Science Data Center, I-00044 Frascati, Italy.), AH(Laboratoire AIM, CEA/DSM-CNRS-Université Paris Diderot, Service d'Astrophysique, CEA Saclay, 91191 Gif/Yvette, France), AI(Laboratoire AIM, CEA/DSM-CNRS-Université Paris Diderot, Service d'Astrophysique, CEA Saclay, 91191 Gif/Yvette, France), AJ(Department of Astronomy, California Institute of Technology, Pasadena, CA 91125.)
Publication:
The Astrophysical Journal Supplement Series, Volume 175, Issue 1, pp. 97-104. (ApJS Homepage)
Publication Date:
03/2008
Origin:
UCP
Astronomy Keywords:
Galaxies: BL Lacertae Objects: General, Galaxies: Active, Galaxies: Quasars: General, Surveys
DOI:
10.1086/523302
Bibliographic Code:
2008ApJS..175...97H

Abstract

We describe a uniform all-sky survey of bright blazars, selected primarily by their flat radio spectra, that is designed to provide a large catalog of likely γ-ray active galactic nuclei (AGNs). The defined sample has 1625 targets with radio and X-ray properties similar to those of the EGRET blazars, spread uniformly across the |b|>10deg sky. We also report progress toward optical characterization of the sample; of objects with known R<23, 85% have been classified and 81% have measured redshifts. One goal of this program is to focus attention on the most interesting (e.g., high-redshift, high-luminosity,...) sources for intensive multiwavelength study during the observations by the Large Area Telescope (LAT) on GLAST.

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