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On the formation of single and binary helium-rich sdO stars

Abstract:

We propose a formation channel for the previously unexplained helium-rich subdwarf O (He-rich sdO) stars in which post-subdwarf B (sdB) stars (i.e. hybrid COHe white dwarfs) reignite helium burning in a shell after gaining matter from their helium white-dwarf (WD) companions. Such short-period binaries containing post-sdB WDs and helium WDs are predicted by one of the major binary formation channels for sdB stars. In the majority of cases, mass transfer is expected to lead to a dynamically un...

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Publication status:
Published

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Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Sub department:
Astrophysics
Role:
Author
Journal:
Monthly Notices of the Royal Astronomical Society More from this journal
Volume:
410
Issue:
2
Pages:
984-993
Publication date:
2010-08-09
DOI:
ISSN:
0035-8711
Keywords:
Pubs id:
pubs:118096
UUID:
uuid:0649fcf4-aa12-4f5c-9e9a-6f94f1115e40
Local pid:
pubs:118096
Source identifiers:
118096
Deposit date:
2012-12-19

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