Follow-up Observations of SPY White Dwarf + M-Dwarf Binaries
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San Francisco : ASP
InAstronomical Society of the Pacific Conference Series, (2007)Napiwotzki, R. (ed.), 15th European Workshop on White Dwarfs, pp. 471-476
15th European Workshop on White Dwarfs
Article in monograph or in proceedings
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Astronomical Society of the Pacific Conference Series
Napiwotzki, R. (ed.), 15th European Workshop on White Dwarfs
SubjectASP Conference Series; Astronomy
We present the results of follow-up observations of white-dwarf + M-dwarf binaries identified using spectra obtained as part of the SPY survey. Spectra of the Halpha region were obtained with the SPIRAL spectrograph on the AAT telescope. Of the eleven stars observed, seven are binaries with periods in the range 2.8 hours to 7.7 days. We also show that one of our targets, WD 0137-349, has a brown dwarf companion.
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