Population synthesis of Galactic subdwarf B stars

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.

Appeared in 2010 in Ap&SS

References in corpus (4)

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• On type Ia supernovae and the formation of single low-mass white dwarfs
• An evolutionary study of the pulsating subdwarf B eclipsing binary PG1336-018 (NY Vir)
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Cited by in corpus (34)

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• The catalogue of radial velocity variable hot subluminous stars from the MUCHFUSS project
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• Discovery of Two New Thermally Bloated Low-Mass White Dwarfs Among the Kepler Binaries
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• Phases of Mass Transfer from Hot Subdwarfs to White Dwarf Companions and Their Photometric Properties
• Cataclysmic variable evolution and the white dwarf mass problem: A Review
• Giant planet engulfment by evolved giant stars: light curves, asteroseismology, and survivability
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• The origin of single low-mass WDs: another problem that consequential angular momentum loss in CVs might solve
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• Two New Long-Period Hot Subdwarf Binaries with Dwarf Companions
• The formation of long-period eccentric binaries with a helium white dwarf
• Transients from the Cataclysmic Deaths of Cataclysmic Variables
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