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arXiv · 1302.0135

Population synthesis of Galactic subdwarf B stars

G. Nelemans
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Abstract

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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G. Nelemans. 2013-02-01. Population synthesis of Galactic subdwarf B stars. https://doi.org/10.1007/s10509-010-0392-0

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