NOAO >   Observing Info >   Approved Programs >   2009B-0389

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Proposal Information for 2009B-0389


PI: John P. Hughes, Rutgers University, jph@physics.rutgers.edu
Address: Physics Department, 136 Frelinghuysen Rd, Piscataway, NJ 08854, USA

CoI: Felipe Menanteau, Rutgers University
CoI: Leopoldo Infante, P. Univ. Catolica de Chile
CoI: Jean-Baptiste Juin, P. Univ. Catolica de Chile
CoI: Felipe Barrientos, P. Univ. Catolica de Chile

Title: Mass Calibration of Nearby SZE Galaxy Clusters

Abstract: We propose to obtain deep g- and r-band Blanco/MOSAIC imaging of three optically-rich and X-ray bright clusters, Abell S0592, Abell S0295, and RXC J0217.2-5244, that have been selected based on their detection by the Atacama Cosmology Telescope (ACT) in the Sunyaev- Zel'dovich effect (SZE) at 145 GHz. The clear signature of the SZE is being used to produce a unique sample of galaxy clusters defined only by a lower mass limit and essentially independent of distance. Here we target clusters at fairly low redshift (0.22 < z < 0.34) with an immediate goal of obtaining accurate mass estimates through weak lensing. This project forms part of our larger study of some 30-40 ACT SZE-selected clusters, including a number at high redshift (using VLT/Gemini), with the goal of observationally determining the relationship between SZ flux and cluster mass.


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 >   2009B-0389

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