Hot subdwarf stars and their connection to thermonuclear supernovae

Geier S, Kupfer T, Ziegerer E, Heber U, Nemeth P, Irrgang A (2016)

Publication Type: Conference contribution

Publication year: 2016

Publisher: Institute of Physics Publishing

Book Volume: 728

Conference Proceedings Title: Journal of Physics: Conference Series

Event location: Hong Kong CN

DOI: 10.1088/1742-6596/728/7/072017

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.

Authors with CRIS profile

Eva Ziegerer Dr.Karl-Remeis-Sternwarte Bamberg, Astronomisches Institut Ulrich Heber Naturwissenschaftliche Fakultät Peter Nemeth Dr.Karl-Remeis-Sternwarte Bamberg, Astronomisches Institut Andreas Irrgang Dr.Karl-Remeis-Sternwarte Bamberg, Astronomisches Institut

Involved external institutions

California Institute of Technology (Caltech) US United States (USA) (US) University of Warwick GB United Kingdom (GB)

How to cite

APA:

Geier, S., Kupfer, T., Ziegerer, E., Heber, U., Nemeth, P., & Irrgang, A. (2016). Hot subdwarf stars and their connection to thermonuclear supernovae. In Sun Kwok, Kam-Ching Leung (Eds.), Journal of Physics: Conference Series. Hong Kong, CN: Institute of Physics Publishing.

MLA:

Geier, S., et al. "Hot subdwarf stars and their connection to thermonuclear supernovae." Proceedings of the 11th Pacific Rim Conference on Stellar Astrophysics: Physics and Chemistry of the Late Stages of Stellar Evolution, Hong Kong Ed. Sun Kwok, Kam-Ching Leung, Institute of Physics Publishing, 2016.

BibTeX: Download