Publication
A deeply embedded companion to LKH-alpha198
The region around the Herbig Ae/Be star LKH-alpha198 was imaged at 10 micrometer with the CAMIRAS camera at the Canada-France-Hawaii Telescope and the Nordic...
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PublicationAn Atlas of Optical Continuum and Line Emission from Low-Mass X-Ray Binaries
Broadband optical spectra of a sample of 15 low-mass X-ray binaries (LMXBs) is obtained in the range of 4000-9000 A. The spectra are fitted with combinations of...
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PublicationDynamical evidence for a black hole in the x-ray transient QZ VUL (=GS 2000+25)
We report the spectroscopic detection of the secondary star in the x-ray transient QZ Vul (=GS 2000+25). Cross-correlation of individual spectra against K-type...
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PublicationThe Mass of the Neutron Star in CYG X-2 (V1341 CYG)
Cygnus X-2 is one of the brightest and longest known X-ray sources. We present high resolution optical spectroscopy of Cyg X-2 obtained over 4 years which gives...
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PublicationThe Rotation Speed of the Companion Star in Aquila X-1
We have obtained medium resolution spectra of the neutron star X-ray transient Aql X-1 during quiescence. We determine the spectral type of the companion star...