Substellar companions and the formation of hot subdwarf stars
Geier S, Heber U, Tillich A, Hirsch H, Kupfer T, Schaffenroth V, Classen L, Maxted PF, Østensen RH, Barlow BN, Marsh TR, Gänsicke BT, Napiwotzki R, O'Toole SJ, Günther EW (2011)
Publication Type: Conference contribution
Publication year: 2011
Journal
Book Volume: 1331
Pages Range: 163-169
Conference Proceedings Title: AIP Conference Proceedings
ISBN: 9780735408869
DOI: 10.1063/1.3570969
Abstract
We give a brief review over the observational evidence for close substellar companions to hot subdwarf stars. The formation of these core helium-burning objects requires huge mass loss of their red giant progenitors. It has been suggested that besides stellar companions substellar objects in close orbits may be able to trigger this mass loss. Such objects can be easily detected around hot subdwarf stars by medium or high resolution spectroscopy with an RV accuracy at the km s-1-level. Eclipsing systems of HW Vir type stick out of transit surveys because of their characteristic light curves. The best evidence that substellar objects in close orbits around sdBs exist and that they are able to trigger the required mass loss is provided by the eclipsing system SDSS J0820+0008, which was found in the course of the MUCHFUSS project. Furthermore, several candidate systems have been discovered. © 2011 American Institute of Physics.
Authors with CRIS profile
Stephan Geier
Dr.Karl-Remeis-Sternwarte Bamberg, Astronomisches Institut
Ulrich Heber
Naturwissenschaftliche Fakultät
Veronika Schaffenroth
Dr.Karl-Remeis-Sternwarte Bamberg, Astronomisches Institut
Lew Classen
Dr.Karl-Remeis-Sternwarte Bamberg, Astronomisches Institut
Involved external institutions
University of Hertfordshire
United Kingdom (GB)
Australian Astronomical Observatory
Australia (AU)
University of Warwick
United Kingdom (GB)
University of Keele
United Kingdom (GB)
Katholieke Universiteit Leuven (KUL) / Catholic University of Leuven
Belgium (BE)
Thüringer Landessternwarte Tautenburg (TLS) - Karl-Schwarzschild-Observatorium
Germany (DE)
University of North Carolina at Chapel Hill
United States (USA) (US)
United Kingdom (GB)
Australian Astronomical Observatory
Australia (AU)
University of Warwick
United Kingdom (GB)
University of Keele
United Kingdom (GB)
Katholieke Universiteit Leuven (KUL) / Catholic University of Leuven
Belgium (BE)
Thüringer Landessternwarte Tautenburg (TLS) - Karl-Schwarzschild-Observatorium
Germany (DE)
University of North Carolina at Chapel Hill
United States (USA) (US)
How to cite
APA:
Geier, S., Heber, U., Tillich, A., Hirsch, H., Kupfer, T., Schaffenroth, V.,... Günther, E.W. (2011). Substellar companions and the formation of hot subdwarf stars. In AIP Conference Proceedings (pp. 163-169).
MLA:
Geier, Stephan, et al. "Substellar companions and the formation of hot subdwarf stars." Proceedings of the International Conference "Planetary Systems Beyond the Main Sequence" 2011. 163-169.
BibTeX: Download