Population synthesis of Galactic subdwarf B stars

Details Population synthesis of Galactic subdwarf B stars Population synthesis of Galactic subdwarf B stars

Oct 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010ap%26ss.329...25n&link_type=abstract

Astrophysics and Space Science, Volume 329, Issue 1-2, pp. 25-31

Astronomy and Astrophysics

Astrophysics

7

Binary Stars, Subdwarf B Stars, Galactic Population

Scientific paper

I briefly review the method of population synthesis of binary stars and discuss the preliminary results of a study of the Galactic population of subdwarf B stars. In particular I focus on the formation of (apparently) single sdB stars and their relation to (apparently) single helium-core white dwarfs. I discuss the merits of mergers of two helium white dwarfs and interactions with sub-stellar companions for explaining these single objects. A preliminary conclusion is that the current observations suggest both mechanisms may contribute, but that the helium white dwarfs are likely formed in majority from interactions with sub-stellar companions.

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