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Paper: Radial Velocity Variable sdO/Bs from SPY – Preliminary Orbits of Three New Short Period Binaries
Volume: 392, Hot Subdwarf Stars and Related Objects
Page: 225
Authors: Geier, S.; Heber, U.; Napiwotzki, R.
Abstract: We present new results from follow-up time-resolved spectroscopy of radial velocity variable hot subdwarfs from the SPY project. Medium resolution 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.
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