PI: Stephane Vennes, Astronomicky ustav, AV CR, email@example.com
Address: Stellar Department, Fricova 298, Ondrejov 251 65, Czech Republic
CoI: Adela Kawka, Astronomicky ustav, AV CR
CoI: Peter Nemeth, Astronomicky ustav, AV CR
CoI: Simon O'Toole, Australian Astronomical Observatory
Title: Hot subdwarf binaries in the GALEX survey
Abstract: We will investigate the role played by close binary companions in the formation and evolution of extreme horizontal-branch (EHB) stars. We propose to obtain high-dispersion spectra of a sample of hot subdwarf stars and identify new close binaries from a set of radial velocity measurements. The binaries will be marked for additional observations and the period and mass functions will eventually help in constraining the nature of the companions. Double degenerate systems such as these are part of the population generating such events as AM CVn binaries and Type 1a supernovae.
National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360