The Brown Dwarf Kinematics Project (BDKP): Proper Motions and Parallaxes of a Select Sample of Ultracool Dwarfs

Details The Brown Dwarf Kinematics Project (BDKP): Proper Motions and Parallaxes of a Select Sample of Ultracool Dwarfs The Brown Dwarf Kinematics Project (BDKP): Proper Motions and Parallaxes of a Select Sample of Ultracool Dwarfs

Jan 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21542428f&link_type=abstract

American Astronomical Society, AAS Meeting #215, #424.28; Bulletin of the American Astronomical Society, Vol. 42, p.335

Astronomy and Astrophysics

Astronomy

Scientific paper

The distances and kinematics of brown dwarfs provide key statistical constraints on their ages, moving group membership, absolute brightnesses, evolutionary trends, and multiplicity. Yet fundamental measurements of parallax, proper motion and radial velocity have been made for only a relatively small fraction of the known brown dwarf population. To address this deficiency, we have initiated the Brown Dwarf Kinematics which aims to measure and compile the 6D positions and velocities of all known brown dwarfs within 20 pc of the Sun and select sources of scientific interest. For the past two years we have been collecting parallax data on a large sample of the brown dwarf population including late-type M and L dwarfs demonstrating spectral signatures of youth as well as L/T transition objects. We have used the ANDICAM imager on the 1.3m at CTIO for the brighter objects (J< 15.0)and the ISPI imager on the 4.0m at CTIO for the faintest targets (J> 15.0). In this poster, we will report preliminary results for a sample of objects on our parallax program.

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