NOAO >   Observing Info >   Approved Programs >   2007B-0335

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Proposal Information for 2007B-0335


PI: Anthony Gonzalez, University of Florida, anthony@astro.ufl.edu
Address: Astronomy Department, Bryant Space Science Center PO Box 112055, Gainesville, FL 32611-2055, USA

CoI: Mark Brodwin, JPL
CoI: S. Adam Stanford, IGPP/LLNL, UC Davis
CoI: Peter Eisenhardt, JPL
CoI: Buell Jannuzi, NOAO
CoI: Daniel Stern, JPL/Caltech
CoI: Arjun Dey, NOAO
CoI: Yen-Ting Lin, Princeton/Pontifica Universidad Catolica de Chile
CoI: Michael Brown, Monash University
CoI: Amy Mainzer, JPL

Title: NEW(FIRM) GALAXY CLUSTERS AT z>1.5

Abstract: We request 5 nights using NEWFIRM on the KPNO 4m to obtain deep H- band imaging of the 2 \rm deg^2 overlap region between the SWIRE and NDWFS Cetus surveys. The primary science goals of this program are detection of galaxy clusters at z>1.5 and measuring the clustering of the L_* galaxy population to z~3. This program builds upon our successful cluster search and clustering studies at z<1.5 in the NDWFS \boot region, extending upon this previous program by providing significantly improved photometric redshifts at z>1.5. The survey region is the target of one of the most comprehensive wide-area multiwavelength studies in astronomy, and the proposed observations will enable robust photometric redshifts for L_* galaxies at z=0-3. Scaling from the cluster number counts in \boot, we expect to identify roughly five clusters and groups at z>1.5 in the proposed study. In addition, we may detect a brown dwarf with T<750K. Such an object could be the first example of the yet to be defined "Y" class, which are thought to be numerous but as yet undiscovered. This program will also serve as a pilot study to assess the potential for future wider area surveys with NEWFIRM.


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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