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Preprint 10e/00

Stratified Non-LTE Model Atmospheres for hot White Dwarfs

Stefan Dreizler (1), Sonja Schuh (1)

(1) Institut für Astronomie und Astrophysik, Astronomie, Universität Tübingen, Waldhäuser Str. 64, D-72076 Tübingen, Germany

To appear in: The 12^th European Workshop on White Dwarfs, ASP Conference Series, Vol. xxx, 2001, H.L. Shipman and J.L. Provencal, eds.

Abstract. In this paper, we present our work towards stratified non-LTE model atmospheres. The chemical stratification is determined from the equilibrium between gravity and radiative levitation. The chemical composition is therefore no longer a free parameter but is determined from the fundamental atmospheric parameters, effective temperature and surface gravity, alone. Some applications to hot white dwarfs are presented.

Key words: -

Paper (287k gzip'ed Postscript including figures)

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