NOAO >   Observing Info >   Approved Programs >   2008B-0384

Small NOAO Logo

Proposal Information for 2008B-0384


PI: Xiaohui Fan, University of Arizona, fan@as.arizona.edu
Address: Department of Astronomy, 933 N Cherry Ave, Tucson, AZ 85721, USA

CoI: Jim Annis, FNAL
CoI: Richard Green, LBTO
CoI: Linhua Jiang, University of Arizona
CoI: Mark Lacy, SSC/Caltech
CoI: Gordon T. Richards, Drexel University
CoI: Michael A. Strauss, Princeton University

Title: Near-IR Imaging of the SDSS Deep Stripe

Abstract: We propose to carry out a Near-IR imaging survey in the SDSS deep stripe using NEWFIRM on the KPNO 4m telescope. The SDSS deep stripe covers 300 deg^2, and has been scanned above 60 times in the ugriz bands. The coadded imaging data reach i_AB~24.5, providing one of the deepest large-area multicolor datasets to date. This region also has considerable multiwavelength coverage from UV to radio. Our NEWFIRM observations will be conducted in the J and Ks bands to AB mag ~22. The resulting dataset together with other multiwavelength data will allow us to map field brown dwarfs, study the AGN/quasar population down to i_AB~23 at 0<z<6, and probe luminous red galaxies up to z>1.5. Last year we were awarded 7 nights on NEWFIRM, and we successfully collected ~40 deg^2 of J-band data. To probe rare objects such as z>6.5 quasars, a larger survey is needed. In this semester, we request 5 nights for J-band imaging of 50 deg^2 and 2 nights for Ks-band imaging of 20 deg^2. The wide-area coverage (90 deg^2) in J band will enable first discovery of quasars at z>6.5 and brown dwarfs cooler than type T; while the Ks-band photometry is important for determining stellar masses of galaxies and photo-z's of quasars.


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 >   2008B-0384

noaoprop-help@noao.edu

Small NOAO Logo