Multiplicity of Southern B Stars: Preliminary Results

Details Multiplicity of Southern B Stars: Preliminary Results Multiplicity of Southern B Stars: Preliminary Results

Sep 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aspc..447...73h&link_type=abstract

Evolution of compact binaries. Proceedings of a workshop held at Hotel San Martín, Viña del Mar, Chile 6–11 May 2011. ASP Confe

Astronomy and Astrophysics

Astronomy

Scientific paper

We report first results from a spectroscopic monitoring campaign of 581 southern B-type stars. Our multi-epoch spectra allow to derive the multiplicity rate as a function of spectral type from B0 to B9. Additionally, a number of previously unknown Be stars have been discovered raising the frequency of the Be phenomenon in our sample from 7% to at least 18%. The similar binary fraction in Be stars and in “normal” B-type stars argues against a companion-induced Be phenomenon.

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