Hot subdwarf stars and their connection to thermonuclear supernovae
Abstract
Hot subdwarf stars (sdO/Bs) are evolved core helium-burning stars with very thin hydrogen envelopes, which can be formed by common envelope ejection. Close sdB binaries with massive white dwarf (WD) companions are potential progenitors of thermonuclear supernovae type Ia (SN Ia). We discovered such a progenitor candidate as well as a candidate for a surviving companion star, which escapes from the Galaxy. More candidates for both types of objects have been found by crossmatching known sdB stars with proper motion and light curve catalogues. The Gaia mission will provide accurate astrometry and light curves of all the stars in our hot subdwarf sample and will allow us to compile a much larger all-sky catalogue of those stars. In this way we expect to find hundreds of progenitor binaries and ejected companions.
Additional Information
© 2016 Published under licence by IOP Publishing Ltd. Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.Attached Files
Published - JPCS_728_7_072017.pdf
Submitted - 1604.05469v1.pdf
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Additional details
- Eprint ID
- 69542
- Resolver ID
- CaltechAUTHORS:20160810-125821420
- Created
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2016-08-10Created from EPrint's datestamp field
- Updated
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2022-07-12Created from EPrint's last_modified field