NOAO > Observing Info > Approved Programs > 2011B-0191
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NOAO > Observing Info > Approved Programs > 2011B-0191 |
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PI: Stephane Vennes, Astronomicky ustav, AV CR, vennes@sunstel.asu.cas.cz
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
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NOAO > Observing Info > Approved Programs > 2011B-0191 |
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