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Follow-up Observations of SPY White Dwarf + M-Dwarf Binaries
(Astronomical Society of the Pacific, 2007)
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 Hα region were obtained with the SPIRAL spectrograph on the AAT ...
Spectroscopic Analysis of Subluminous B Stars in Binaries with Compact Companions
(Astronomical Society of the Pacific, 2007)
The masses of compact objects like white dwarfs, neutron stars and black holes are fundamental to astrophysics, but very difficult to measure. We present the results of an analysis of subluminous B (sdB) stars in close ...