Institut für Astronomie und Astrophysik

Abteilung Astronomie

Preprint 01d/97

Spectral Analysis of PG 1159 Stars with Line Blanketed Non-LTE Model Atmospheres

K. Werner(1), S. Dreizler(1), U. Heber(2), T. Rauch(1)

(1)Institut für Astronomie und Astrophysik, Astronomie, Universität Tübingen, Waldhäuser Str. 64, D-72076 Tübingen, Germany
(2)Dr. Remeis-Sternwarte, Sternwartstr. 7, D-96049 Bamberg, Germany

Contribution to the 3rd Conference on Faint Blue Stars, Schenectady USA, October 13-17, 1996

Abstract. Almost ten years ago, at the time when the Second Conference on Faint Blue Stars was held, the PG 1159 stars have just been established as a new spectroscopic class of hot hydrogen-deficient white dwarfs. Now, at the Third Conference, non-LTE model atmosphere analyses of most of these stars have become available. We summarize the results and discuss the relation of the PG 1159 objects to other hydrogen-deficient stars. A recently discovered new class of hot white dwarfs, which display signatures of a superhot wind, has attracted considerable attention. We present latest Hubble Space Telescope observations.

Paper (127k gzip'ed Postscript including figures)

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Jürgen Barnstedt (barnstedt AT astro.uni-tuebingen.de) Last updated 04-Aug-1997