Companions of Post-Common Envelope sdB Binaries

Details Companions of Post-Common Envelope sdB Binaries Companions of Post-Common Envelope sdB Binaries

Jun 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004ap%26ss.291..267g&link_type=abstract

Astrophysics and Space Science, v. 291, Issue 3, p. 267-274 (2004).

Astronomy and Astrophysics

Astrophysics

6

Subdwarf B Stars, Binary Stars, Common Envelope Evolution

Scientific paper

Preliminary results are presented from two ongoing complementary surveys intended to investigate the nature and characteristics of the optically invisible secondaries in post-common envelope subdwarf B (sdB) binary stars. We obtain precise radial velocities to derive periods and minimum companion masses for bright field sdB stars. These data are combined with light curves to search for eclipses, reflection effects, or ellipsoidal variations. We emphasize the importance of using complete unbiased samples, without which it will not be possible to understand the details of the multiple processes that produce these stars.

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