Wide Ultracool Companions to Spectroscopic Binaries: Testing Star Formation Simulations

Details Wide Ultracool Companions to Spectroscopic Binaries: Testing Star Formation Simulations Wide Ultracool Companions to Spectroscopic Binaries: Testing Star Formation Simulations

Aug 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007noao.prop..225a&link_type=abstract

NOAO Proposal ID #2007B-0225

Computer Science

Scientific paper

The wide brown dwarf companion rate of spectroscopic binaries is predicted by certain star formation simulations to be considerably higher than that of single stars (10% versus 1-2%). I will test this hypothesis in a robust, statistically significant manner by measuring the wide brown dwarf binary rate of a large, volume-limited sample of 120 known spectroscopic binaries within 30 pc of the Sun. The primary measurement will be made through a common proper motion search with the 2MASS database serving as the first epoch and the proposed observations as the second epoch. The proposed observations will also serve as a first epoch for very faint companions not detected in 2MASS. This work will identify previously unknown nearby ultracool dwarfs, which are excellent targets for detailed follow-up observations.

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