Radial Velocity Variable sdO/Bs from SPY - Preliminary Orbits of Three New Short Period Binaries

S. Geier, U. Heber, R. Napiwotzki

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Abstract

We present new results from follow-up time-resolved spectroscopy of radial velocity variable hot subdwarfs from the SPY project. Medium resolu- tion spectra were taken at the ESO NTT. Preliminary orbital solutions are presented for three single-lined sdO/B binaries. The orbital periods of all binaries are short and the companions are most likely white dwarfs or late main-sequence stars. Follow-up time-resolved spectroscopy is necessary to measure the orbital parameters with higher accuracy. Light curves should be taken in order to search for reflection effects and or eclipses.
Original languageEnglish
Title of host publicationIn: Hot Subdwarf Stars and Related Objects - ASP Conf Series 392
PublisherAstronomical Society of the Pacific
Pages225-230
ISBN (Print)978-1-58381-654-7, 978-1-58381-655-4
Publication statusPublished - 2008

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