NOAO >   Observing Info >   Approved Programs >   2012B-0470

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Proposal Information for 2012B-0470


PI: Anthony Gonzalez, University of Florida, anthony@astro.ufl.edu
Address: Astronomy Department, Bryant Space Science Center, Gainesville, Florida 32611-2055, USA

CoI: Daniel Gettings, University of Florida
CoI: Adam Stanford, UC Davis/LLNL
CoI: Mark Brodwin, University of Missouri - Kansas City
CoI: Peter Eisenhardt, JPL
CoI: Cosimo Fedeli, University of Florida
CoI: Daniel Stern, JPL
CoI: Greg Zeimann, UC Davis

Title: The Massive Distant Clusters of Wise Survey (MaDCoWS)

Abstract: The Massive Distant Clusters of WISE Survey is a comprehensive search of the full extragalactic sky designed to detect and characterize the most massive galaxy clusters at 1\la z\la 1.4, with the dual aims of constraining the Gaussianity of the initial density perturbations after inflation and exploring the evolution of the oldest galaxies in the most overdense environments. The foundation for this program is data from the NASA Wide Field Infrared Explorer (WISE), an all-sky infrared survey mission. Our team has developed a modified version of the cluster detection algorithm developed by Papovich (2008) that employs color selection in the two bluest bands (3.4 and 4.6 (mu)m) to isolate galaxies at z\ga 1 and identify clusters as overdensities of L^* galaxies at these redshifts. The technique has been applied to the full WISE data set, and follow-up imaging during the past two semesters had demonstrated the success of this approach. During the current semester we request use of Gemini-N/GMOS to obtain spectroscopic redshifts for the 6 clusters confirmed by our optical/NIR imaging in 2011B. We also request additional optical and infrared imaging with WIYN to complete our northern hemisphere imaging program, using I and K_s photometry to confirm cluster candidates and identify a subset of systems for further follow-up.


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



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