A Spectroscopic Study of Field and Runaway OB Stars

Details A Spectroscopic Study of Field and Runaway OB Stars A Spectroscopic Study of Field and Runaway OB Stars

2006-08-13

arxiv.org/abs/astro-ph/0608270v2

Astrophys.J.655:473-483,2007

Astronomy and Astrophysics

Astrophysics

21 pages, 1 figure, 7 tables; Accepted to ApJ

Scientific paper

10.1086/509914

Identifying binaries among runaway O- and B-type stars offers valuable insight into the evolution of open clusters and close binary stars. Here we present a spectroscopic investigation of 12 known or suspected binaries among field and runaway OB stars. We find new orbital solutions for five single-lined spectroscopic binaries (HD 1976, HD 14633, HD 15137, HD 37737, and HD 52533), and we classify two stars thought to be binaries (HD 30614 and HD 188001) as single stars. In addition, we reinvestigate their runaway status using our new radial velocity data with the UCAC2 proper motion catalogs. Seven stars in our study appear to have been ejected from their birthplaces, and at least three of these runaways are spectroscopic binaries and are of great interest for future study.

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