NOAO >   Observing Info >   Approved Programs >   2002A-0182

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Proposal Information for 2002A-0182


PI: Sebastien Lepine, American Museum of Natural History, lepine@amnh.org
Address: CPW at 79th street, New York, NY 10024, USA

CoI: Michael M. Shara, American Museum of Natural History

Title: Identification of candidate very cool, old white dwarfs at low galactic latitudes

Abstract: We are performing a survey a high proper motion stars at low galactic latitudes, in which we have identified >130 new stars with proper motion (mu)>0.5 arcsec yr^-1. These include a set of 21 relatively faint (R>18) stars, several of which we suspect to be very cool white dwarfs similar to those identified by Oppenheimer \it et al. (2001), and which are claimed to be evidence for a population of primordial white dwarfs in the halo. We propose to obtain spectra from 16 candidate old white dwarfs, and determine whether or not they can also be associated with a population of halo white dwarfs.


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-0182

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