The Bright SHARC Survey: The Cluster Catalog

Romer, A K, Nichol, R C, Holden, B P, Ulmer, M P, Pildis, R A, Merrelli, A J, Adami, C, Burke, D J, Collins, C A, Metevier, A J, Kron, R G and Commons, K (2000) The Bright SHARC Survey: The Cluster Catalog. Astrophysical Journal Supplement Series, 126 (2). pp. 209-269. ISSN 0067-0049

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Abstract

We present the Bright SHARC (Serendipitous High-Redshift Archival ROSAT Cluster) Survey, which is an objective search for serendipitously detected extended X-ray sources in 460 deep ROSAT PSPC pointings. The Bright SHARC Survey covers an area of 178.6 deg2 and has yielded 374 extended sources. We discuss the X-ray data reduction, the candidate selection and present results from our on-going optical follow-up campaign. The optical follow-up concentrates on the brightest 94 of the 374 extended sources and is now 97% complete. We have identified 37 clusters of galaxies, for which we present redshifts and luminosities. The clusters span a redshift range of 0.0696< z < 0.83 and a luminosity range of 0.065< LX< 8.31044 ergs s-1 [0.5-2.0 keV] (assuming H0=50 km s-1 Mpc-1 and q0=0.5). Twelve of the clusters have redshifts greater than z=0.3, eight of which are at luminosities brighter than LX=31044 ergs s-1. Seventeen of the 37 optically confirmed Bright SHARC clusters have not been listed in any previously published catalog. We also report the discovery of three candidate ``fossil groups'' of the kind proposed by Ponman et al. Based on data taken at the European Southern Observatory, Kitt Peak National Observatory, Cerro Tololo Inter-American Observatory, Canada-France-Hawaii, and Apache Point Observatory.

Item Type: Article
Additional Information: 108 ADS citations (3/28/07)
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
Depositing User: Kathy Romer
Date Deposited: 06 Feb 2012 20:48
Last Modified: 06 Mar 2017 18:23
URI: http://sro.sussex.ac.uk/id/eprint/28191

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