Abstract The ROSAT data of the hot DA white dwarf HS1234+4811 were analyzed in the framework of three different assumptions for the structure of the white dwarf's atmosphere. It could be excluded that the star has a homogeneously mixed photosphere consisting of helium and hydrogen only, but from ROSAT observations alone it is not possible to decide if the object has a stratified atmosphere with an ultrathin hydrogen layer (M H ≈ 7 · 10−14 M ⊙) on top of the He envelope or if heavier elements are responsible for the absorption in the soft X-ray region.
Analysis of the ROSAT pointed observation of the hot DA white dwarf HS1234+4811
Advances in Space Research ; 13 , 12 ; 319-322
01.01.1993
4 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Analysis of the ROSAT Pointed Observation of the Hot DA White Dwarf HS1234+4811
Online Contents | 1993
|Analysis of the ROSAT Pointed Observation of the Hot DA White Dwarf HS1234+4811
British Library Conference Proceedings | 1993
|DataCite | 1937
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