An explanation for the peculiar EUV spectrum of the hot DA white dwarf Feige 24

Details An explanation for the peculiar EUV spectrum of the hot DA white dwarf Feige 24 An explanation for the peculiar EUV spectrum of the hot DA white dwarf Feige 24

Jan 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apj...336l..25v&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 336, Jan. 1, 1989, p. L25-L28. Research supported by NSERC and Mi

Astronomy and Astrophysics

Astrophysics

43

Hot Stars, Peculiar Stars, Stellar Atmospheres, Stellar Spectra, Ultraviolet Spectra, White Dwarf Stars, Abundance, Atmospheric Models, Extreme Ultraviolet Radiation, Metals, X Rays

Scientific paper

The novel atmosphere model presently constructed from the high-resolution EUV spectrum of the hot DA white dwarf Feige 24 proceeds by examining the possibility that the measured spectrum originates in a stratified atmosphere, where a thin hydrogen layer is in diffusive equilibrium over the He envelope. It is then supposed that many different metals could be present in low abundances; this is found to satisfactorily reproduce the observed EUV spectrum. The abundances required for spectrum-fitting are approximately consistent with the predictions of radiative element support.

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