0067-0049_126_2_209.pdf (4.47 MB)
The Bright SHARC Survey: The Cluster Catalog
journal contribution
posted on 2023-06-08, 07:52 authored by Kathy RomerKathy Romer, R C Nichol, B P Holden, M P Ulmer, R A Pildis, A J Merrelli, C Adami, D J Burke, C A Collins, A J Metevier, R G Kron, K CommonsWe 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.
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Astrophysical Journal Supplement SeriesISSN
0067-0049Publisher
Institute of PhysicsExternal DOI
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2Volume
126Page range
209-269Department affiliated with
- Physics and Astronomy Publications
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108 ADS citations (3/28/07)Full text available
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2012-02-06First Open Access (FOA) Date
2016-03-22First Compliant Deposit (FCD) Date
2016-11-10Usage metrics
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