NOAO >   Observing Info >   Approved Programs >   2001A-0292

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Proposal Information for 2001A-0292


PI: Richard Elston, The University of Florida, elston@astro.ufl.edu
Address: 211 Bryant Space Science Center, Gainesville, FL 32611, USA

CoI: S. Adam Stanford, IGPP/LLNL
CoI: Peter Eisenhardt, JPL
CoI: Joseph J. Mohr, Dept. of Astronomy, University of Illinois
CoI: Arjun Dey, NOAO
CoI: Buell Januzzi, NOAO
CoI: Daniel Stern, JPL
CoI: Katherine Wu, Dept. of Astronomy, The University of Florida
CoI: Mark Dickinson, STSCI
CoI: Kelly McFarland, Dept. of Astronomy, The University of Florida
CoI: Eric McKenzie, Dept. of Astronomy, The University of Florida
CoI: S. Nick Raines, Dept. of Astronomy, The University of Florida

Title: The Evolution of Clusters and Galaxies at 1<z<2

Abstract: Distant clusters of galaxies provide unique insight into cosmology, the formation of large scale structure, and the formation and evolution of galaxies. We propose to conduct a deep near-IR survey covering 10 deg^2 within the NOAO Deep Wide Field Survey regions, identifying and studying clusters with redshifts in the critical range between 1 and 2. Models indicate we would find ~1200 clusters with a virial mass >10^14 h^-1_65 M_\odot and should detect ~500 at z > 1. The redshift range between 1 and 2 is of particular interest since it is during this interval that we expect rapid evolution of the cluster population. Direct measurement of the evolution of the numbers of clusters in this range will provide constraints to both cosmological parameters and large scale structure formation models. 1 < z < 2 also is the redshift range over which we expect the density-morphology relationship to be established. The evolution of both the cluster luminosity function and the color-magnitude relation will clearly differentiate the competing theories of monolithic collapse and hierarchical formation for cluster galaxies. The deep near-IR data will be very useful for a wide range of other programs. We intend to release our photometric catalog to the community one year after the survey is completed.


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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