FUSE Observations of the Hottest DA White Dwarfs
نویسندگان
چکیده
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 T eff 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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