Other
Scientific paper
Dec 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aas...20921901p&link_type=abstract
2007 AAS/AAPT Joint Meeting, American Astronomical Society Meeting 209, #219.01; Bulletin of the American Astronomical Society,
Other
Scientific paper
Because the size of the habitable zone around a low-mass star corresponds approximately to the separation of typical spectroscopic binaries in nearby star forming regions, the frequency and properties of these close binary systems have important consequences for potential terrestrial planet formation. Observations of spectroscopic binaries also provide mass ratios independent of many of the assumptions needed to convert visual binary magnitude differences into mass ratios. I present the results of a Keck II NIRSPEC survey of a uniform sample of several dozen T Tauri M stars in the Ophiuchus molecular cloud. The frequency of the young, low-mass, spectroscopic binaries discovered in this study is 12%, +/-3%, comparable to the field star spectroscopic binary frequency as well as the frequency for higher mass young stars in a sample culled from several star forming regions. There is therefore no dearth of these binaries at lower masses, however, it will be revealing to compare these results with similar studies in other star forming regions. This research was supported by NSF grant AST 04-44017 and awards from the NASA Keck PI Data Analysis Fund.
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