NOAO > Observing Info > Approved Programs > 2009A-0117
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NOAO > Observing Info > Approved Programs > 2009A-0117 |
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PI: Frederick Walter, State University of New York at Stony Brook, fwalter@mail.astro.sunysb.edu
Address: Department of Physics and Astronomy, Stony Brook, NY, 11794-2100, USA
CoI: Jacqueline Faherty, State University of New York at Stony Brook
Title: Space Motions of Nearby Field Brown Dwarfs
Abstract:
3-dimensional space motions provide important clues to the origins and ages
of stars and sub-stellar mass objects, because space motions can be used to
associate individual objects with streams, moving groups, or associations of
know ages. We are completing a program to determine the parallaxes of 28
southern brown dwarfs, Since the proper motions are known, only the radial
velocities need be measured to yield the full 3D space motions. This will
nearly double the number of brown dwarfs with full space motions. and will
result in a much more uniform spatial distribution since most of the
well-studied nearby brown dwarfs are in the northern hemisphere.
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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NOAO > Observing Info > Approved Programs > 2009A-0117 |
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