NOAO >   Observing Info >   Approved Programs >   2002A-0197

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Proposal Information for 2002A-0197


PI: Joan Najita, NOAO, najita@noao.edu
Address: 950 N. Cherry Ave., Tucson, AZ 85719, USA

CoI: Arjun Dey, NOAO
CoI: Buell Jannuzi, NOAO
CoI: Jim Liebert, Steward Observatory
CoI: Dan Wik, Ohio University
CoI: John Gizis, University of Delaware
CoI: Glenn Tiede, University of Florida

Title: Brown Dwarfs in the NOAO Deep Wide-Field Survey and the Substellar Mass Function

Abstract: The NOAO Deep Wide-Field Survey will enable a detailed look at the substellar IMF in the field. The unique combination of red and infrared survey bands are ideal for selecting brown dwarfs and obtaining a rough measure of their effective temperatures. In addition, the faint flux limits of the survey will probe 10 times the depth probed by 2MASS. Here we propose to obtain far-red spectroscopy of a subsample of substellar candidates from the survey in order to quantify the rate of contamination from galaxies and other non-substellar interlopers in the substellar candidate sample. When corrected for the interloper contamination, the resulting IMF will sample older ages and lower masses than the 2MASS substellar IMF. We will also be able to address whether the 2MASS substellar IMF is a local phenomenon or representative of a larger region of the Galaxy.


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 >   2002A-0197

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