NOAO >   Observing Info >   Approved Programs >   2005B-0279

Small NOAO Logo

Proposal Information for 2005B-0279


PI: Wayne Barkhouse, Harvard-Smithsonian, CfA, wbark@head-cfa.harvard.edu
Address: HEAD, MS-4, 60 Garden Street, Cambridge, MA 02138, USA

CoI: Paul Green, Harvard-Smithsonian, CfA
CoI: Alexey Vikhlinin, Harvard-Smithsonian, CfA
CoI: Dong-Woo Kim, Harvard-Smithsonian, CfA

Title: Near-Infrared Follow-up of High Redshift X-ray Clusters

Abstract: Clusters of galaxies provide an intimate view of galaxy evolution over a wide range in cosmic look-back time and environment. From a large Chandra/NOAO serendipitous survey, we have culled a high- confidence list of high redshift cluster candidates to facilitate the investigation of galaxy cluster evolution and provide strong constraints on cosmological parameters. We propose to use FLAMINGOS on the KPNO 4-m telescope to obtain deep near-IR imaging in the J- and K_s-band of 6 extended X-ray sources discovered serendipitously in Chandra images, but undetected in deep 4m/MOSAIC imaging. Our FLAMINGOS observations will measure cluster redshifts (out to z~ 1.5) using the location of the cluster red-sequence in the color-magnitude plane. Cluster attributes, such as the luminosity function, richness, color-magnitude relation, and correlations between near-IR and X-ray properties, will be measured and contrasted with our more local serendipitous sample. These observations promise to substantially increase the number of known high redshift galaxy clusters.


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 >   2005B-0279

noaoprop-help@noao.edu

Small NOAO Logo