RBSC-NVSS Sample. I. Radio and Optical Identifications of a Complete Sample of 1556 Bright X-Ray Sources

Files

TR Number

Date

2000-08

Journal Title

Journal ISSN

Volume Title

Publisher

IOP PUBLISHING LTD

Abstract

We cross-identified the ROSAT Bright Source Catalog (RBSC) and the NRAO VLA Sky Survey (NVSS) to construct the RBSC-NVSS sample of the brightest X-ray sources (greater than or equal to0.1 counts s(-1)similar to 10(-12) ergs cm(-2) s(-1) in the 0.1-2.4 keV band) that are also radio sources (S greater than or equal to 2.5 mJy at 1.4 GHz) in the 7.8 sr of extragalactic sky with \b\ > 15 degrees and delta > -40 degrees. The sky density of NVSS sources is low enough that they can be reliably identified with RBSC sources having rms positional uncertainties greater than or equal to 10 ". We used the more accurate radio positions to make reliable X-ray/radio/optical identifications down to the POSS plate limits. We obtained optical spectra for many of the bright identifications lacking published redshifts. The resulting X-ray/radio sample is unique in its size (1557 objects), composition (a mixture of nearly normal galaxies, Seyfert galaxies, quasars, and clusters), and low average redshift [[z] similar to 0.1].

Description

Keywords

catalogs, radio continuum : general, surveys, X-rays : general, all-sky survey, galaxies, catalog, ROSAT, emission, clusters, models

Citation

Franz E. Bauer et al. 2000 ApJS 129 547 doi:10.1086/313425