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

S. Geier; U. Heber; R. Napiwotzki

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

S. Geier, U. Heber, R. Napiwotzki

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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 language	English
Title of host publication	In: Hot Subdwarf Stars and Related Objects - ASP Conf Series 392
Publisher	Astronomical Society of the Pacific
Pages	225-230
ISBN (Print)	978-1-58381-654-7, 978-1-58381-655-4
Publication status	Published - 2008

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

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.",

author = "S. Geier and U. Heber and R. Napiwotzki",

note = "Original paper can be found at: http://astrosociety.org/pubs/cs/381.html Copyright ASP",

year = "2008",

language = "English",

isbn = "978-1-58381-654-7",

pages = "225--230",

booktitle = "In: Hot Subdwarf Stars and Related Objects - ASP Conf Series 392",

publisher = "Astronomical Society of the Pacific",

address = "United States",

}

TY - GEN

T1 - Radial Velocity Variable sdO/Bs from SPY - Preliminary Orbits of Three New Short Period Binaries

AU - Geier, S.

AU - Heber, U.

AU - Napiwotzki, R.

N1 - Original paper can be found at: http://astrosociety.org/pubs/cs/381.html Copyright ASP

PY - 2008

Y1 - 2008

N2 - 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.

AB - 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.

M3 - Conference contribution

SN - 978-1-58381-654-7

SN - 978-1-58381-655-4

SP - 225

EP - 230

BT - In: Hot Subdwarf Stars and Related Objects - ASP Conf Series 392

PB - Astronomical Society of the Pacific

ER -

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

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