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FUSE Observations of the hottest DA white dwarfs

M. A. Barstow·M. R. Burleigh·N. P. Bannister·J. B. Holberg·I. Hubeny
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Abstract

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, O, Si, P, S and Fe, the first measurements reported for DA stars at such high temperatures. Values of Teff and log g determined for PG1342+444 from the Lyman line series disagree with the results of the standard Balmer line analysis, an issue that requires further investigation.

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M. A. Barstow, M. R. Burleigh, N. P. Bannister, J. B. Holberg, I. Hubeny. 2000-10-23. FUSE Observations of the hottest DA white dwarfs. https://arxiv.org/abs/astro-ph/0010447

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