Search Publications

Far ultraviolet spectrophotometry of BD +28 4211

Green, James C.; Cook, Timothy A.; Cash, Webster

We report the results of a November 1989 rocket flight which recorded a flux calibrated spectrum of BD +28 4211 from 912 to 1150Å with 1Å resolution. BD +28 4211, an SdO type star, is commonly used as an ultraviolet calibration source in the IUE wavelength band. Our work extends the useful range of this standard shortward of Lyman α. Since previou…

Ultraviolet observations of cataclysmic variables

Verbunt, Frank

The ultraviolet spectra of cataclysmic variables provide us with information on the mass transfer in these systems, and on the variations therein on different time scales. The combined ultraviolet and optical spectra cannot be fitted with simple model spectra, and accordingly, our interpretations of the observed spectra are subject to uncertainty.…

White dwarfs

Barstow, M. A.

Astronomical observations at EUV (~100-1000Å) and FUV (~1000-2000Å) wavelengths have revolutionised our knowledge of white dwarfs and evolutionarily related objects such as subdwarfs and the nuclei of planetary nebulae. Data obtained principally with the IUE and EXOSAT observatories have revealed the presence of trace elements within white dwarf a…