SOUTHERN COSMOLOGY SURVEY. II. MASSIVE OPTICALLY SELECTED CLUSTERS FROM 70 SQUARE DEGREES OF THE SUNYAEV-ZEL'DOVICH EFFECT COMMON SURVEY AREA
- Department of Physics and Astronomy, Rutgers University, 136 Frelinghuysen Road, Piscataway, NJ 08854-8019 (United States)
- Departamento de AstronomIa, Pontificia Universidad Catolica de Chile, Santiago (Chile)
- Astrophysics and Cosmology Research Unit, School of Mathematical Sciences, University of KwaZulu-Natal, Durban 4041 (South Africa)
- ICREA and Institute for Sciences of the Cosmos (ICC), University of Barcelona, Marti i Franques 1, Barcelona 08034 (Spain)
- Physics and Astronomy Department, University of Pittsburgh, 100 Allen Hall, 3941 O'Hara Street, Pittsburgh, PA 15260 (United States)
- Department of Astrophysical Sciences, Peyton Hall, Princeton University, Princeton, NJ 08544 (United States)
We present a catalog of 105 rich and massive (M>3 x 10{sup 14} M {sub sun}) optically selected clusters of galaxies extracted from 70 deg{sup 2} of public archival griz imaging from the Blanco 4 m telescope acquired over 45 nights between 2005 and 2007. We use the clusters' optically derived properties to estimate photometric redshifts, optical luminosities, richness, and masses. We complement the optical measurements with archival XMM-Newton and ROSAT X-ray data which provide additional luminosity and mass constraints on a modest fraction of the cluster sample. Two of our clusters show clear evidence for central lensing arcs; one of these has a spectacular large diameter, nearly complete Einstein Ring surrounding the brightest cluster galaxy. A strong motivation for this study is to identify the massive clusters that are expected to display prominent signals from the Sunyaev-Zel'dovich effect (SZE) and therefore be detected in the wide-area millimeter-band surveys being conducted by both the Atacama Cosmology Telescope and the South Pole Telescope. The optical sample presented here will be useful for verifying new SZE cluster candidates from these surveys, for testing the cluster selection function, and for stacking analyses of the SZE data.
- OSTI ID:
- 21454891
- Journal Information:
- Astrophysical Journal, Supplement Series, Vol. 191, Issue 2; Other Information: DOI: 10.1088/0067-0049/191/2/340; ISSN 0067-0049
- Country of Publication:
- United States
- Language:
- English
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