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A first catalogue of automatically selected ultraviolet-excess sources from the UVEX survey
(2012-02)
We present the first catalogue of point-source ultraviolet (UV)-excess sources selected from the UV-Excess Survey of the Northern Galactic Plane (UVEX). UVEX images the Northern Galactic Plane in the U, g, r and He Iota ...
Substellar companions and the formation of hot subdwarf stars
(American Institute of Physics (AIP), 2011)
We give a brief review over the observational evidence for close substellar companions to hot subdwarf stars. The formation of these core helium-burning objects requires huge mass loss of their red giant progenitors. It ...
Brown dwarf companions to white dwarfs
(American Institute of Physics (AIP), 2011)
Brown dwarf companions to white dwarfs are rare, but recent infra-red surveys are slowly revealing examples. We present new observations of the post-common envelope binary WD0137-349, which reveals the effects of irradiation ...