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Heavy element abundances in DA white dwarfs
M. A. Barstow, M. R. Burleigh, N. P. Bannister +4
We present a series of systematic abundance measurements for a group of hot DA white dwarfs in the temperature range 20,000-75,000K, based on far-UV spectroscopy with STIS on HST,…
FUSE Observations of the hottest DA white dwarfs
M. A. Barstow, M. R. Burleigh, N. P. Bannister +2
We report early FUSE observations of the very hot DA white dwarfs PG1342+444 and REJ0558-371. Detection of photospheric absorption lines allows us to estimate the abundances of C,…
The discovery of photospheric nickel in the hot DO white dwarf REJ0503-289
M. A. Barstow, S. Dreizler, J. B. Holberg +3
We present the first evidence for the direct detection of nickel in the photosphere of the hot DO white dwarf REJ0503289. While this element has been seen previously in the atmo…