期刊
ASTROPHYSICS AND SPACE SCIENCE
卷 329, 期 1-2, 页码 25-31出版社
SPRINGER
DOI: 10.1007/s10509-010-0392-0
关键词
Binary stars; Subdwarf B stars; Galactic population
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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