NOAO >   Observing Info >   Approved Programs >   2006A-0524

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Proposal Information for 2006A-0524


PI: Wayne Barkhouse, University of Illinois, wbark@astro.uiuc.edu
Address: Department of Astronomy, 1002 West Green Street, Urbana, IL 61801, USA

CoI: Paul Green, Harvard-Smithsonian, CfA

Title: Optical Follow-up of Serendipitous \it Chandra X-ray Cluster Candidates

Abstract: Clusters of galaxies provide us with laboratories where galaxy formation and evolution can be studied over a large range in cosmic look- back time. To facilitate the investigation of galaxy cluster evolution, a large statistical sample of galaxy clusters spanning the redshift range from 0< z < 1.5 is required. We propose to use the KPNO 2.1m telescope to acquire deep r^\prime- and z^\prime-band imaging of 14 extended X-ray sources discovered in \it Chandra images that lack deep optical coverage. These X-ray sources are culled from a large \it Chandra/NOAO serendipitous survey. With these observations we will determine the nature of the extended X-ray emission and measure cluster redshifts (out to z~ 1.3) using the location of the cluster red- sequence in the color-magnitude plane. Cluster attributes, such as the luminosity function, optical richness, color-magnitude relation, and correlations between optical and X-ray properties will be measured.


National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360



NOAO >   Observing Info >   Approved Programs >   2006A-0524

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