PI: I. N. Reid, Space Telescope science Institute, firstname.lastname@example.org
Address: 3700 San Martin Drive, Baltimore, MD 21218, USA
CoI: K. L. Cruz, University of Pennsylvania
CoI: J. Liebert, University of Arizona
Title: Finding the neighbours
Abstract: We are engaged in a long-term project which combines 2MASS and POSS II data with other catalogues to complete the census of M and L dwarfs within 20 parsecs of the Sun. In this proposal we aim to concentrate on candidate ultracool dwarfs, selected based on their location in the (J, (J-K)) plane. We have identified an all-sky sample of 884 candidates, providing the first large-scale, systematic survey of late-M/early-L dwarfs. We propose to use intermediate resolution optical spectroscopy to determine accurate distances and luminosities, as well as characterising the level of chromospheric activity. Our goal is a definitive determination of the stellar luminosity function at faint magnitudes, and hence of the stellar mass function in the vicinity of the hydrogen-burning limit.
National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360