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Modeling time-resolved spectra of
ZZ Ceti stars

H. Väth, K. Koester

Institut für Astronomie und Astrophysik der Universität, 24098 Kiel, Germany

S. O. Kepler

Instituto de Fisica, Universidade Federal do Rio Grande do Sul, 91501-970 Porto Alegre, RS, Brazil

E. L. Robinson

McDonald Observatory and Department of Astronomy, The University of Texas at Austin, Austin, TX 78712-1083, USA


We have developed a program with which time resolved spectra of oscillating white dwarfs can be calculated. This program automatically takes into account any non-linear variation of specific intensity with temperature. Here we apply this code to ZZ Ceti stars and present time resolved spectra and corresponding amplitude spectra. Finally, we analyze time resolved HST spectra of G 226-29.

Horst Vaeth
Thu Sep 26 10:49:14 MET DST 1996