The Cool Tertiary Companions of Spectroscopic Binaries

Details The Cool Tertiary Companions of Spectroscopic Binaries The Cool Tertiary Companions of Spectroscopic Binaries

Jan 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21532207a&link_type=abstract

American Astronomical Society, AAS Meeting #215, #322.07; Bulletin of the American Astronomical Society, Vol. 42, p.324

Astronomy and Astrophysics

Astronomy

Scientific paper

I will present preliminary results from a common proper motion survey for companions to spectroscopic binaries. Simulations of the star forming environment have indicated that, in order to produce the very small separations of such systems, a third member can be used to carry away angular momentum, tightening the binary. This third member is often of a very low mass and typically remains bound to the system. I have been conducting a multi-epoch, wide-field and narrow-field search for such companions. The first epoch wide- and narrow-field observations, using the 4m telescopes at KPNO and CTIO, and NIRI/Altair at Gemini-North, of a sample of 98 binaries have been completed. These data cover angular separations from the main binary of 0.5" to 5'. I will present the results derived from those data, which includes the 4 new low-mass companions which were discovered, as well as future plans and prospects for this project.

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