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Hot Subdwarfs in Binaries as the Source of the Far-UV Excess in Elliptical Galaxies

Abstract:

The excess of far-ultraviolet (far-UV) radiation in elliptical galaxies has remained one of their most enduring puzzles. In contrast, the origin of old blue stars in the Milky Way, hot subdwarfs, is now reasonably well understood: they are hot stars that have lost their hydrogen envelopes by various binary interactions. Here, we review the main evolutionary channels that produce hot subdwarfs in the Galaxy and present the results of binary population synthesis simulations that reproduce the m...

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Publication status:
Published

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Institution:
University of Oxford
Department:
Oxford, MPLS, Physics, Astrophysics
Lynas-Gray, AE More by this author
Volume:
392
Pages:
15
Publication date:
2008-08-05
URN:
uuid:18a33f1f-1744-4ddd-a5b1-9230603ecc7d
Source identifiers:
28204
Local pid:
pubs:28204
ISBN:
978-1-58381-654-7
Keywords:

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