Brown Dwarf Binaries in the Pleiades

Details Brown Dwarf Binaries in the Pleiades Brown Dwarf Binaries in the Pleiades

Jul 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995hst..prop.6131j&link_type=abstract

HST Proposal ID #6131

Physics

Hst Proposal Id #6131 Cool Stars

Scientific paper

Hambly, Hawkins & Jameson (1991, MNRAS, 251, 1) carried out a deep proper motion survey of the Pleiades discovering a large population of low mass stars. Follow-up infrared photometry (Steele, Jameson, & Hambly, 1993, MNRAS, 263, 647) showed that around 20 of the Pleiades objects were good brown dwarf candidates (ie. had M<0.08M_odot). The Pleiades objects found appear to lie along two sequences in the I,I-K diagram which we believe to be a single star sequence and a binary star sequence. To test this supposition we request high resolution imaging using PC2 of 8 of our brown dwarf candidtes which we believe to lie in binary systems. This will allow us to determine the validity of our photometric test for binarity and hence allow an estimate of the brown dwarf binary fraction to be made. This has important consequnces for the study of the cluster mass function and ultimately for star formation theory.

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