NLTE spectral analysis of GW Vir pulsators

Details NLTE spectral analysis of GW Vir pulsators NLTE spectral analysis of GW Vir pulsators

2006-01-25

arxiv.org/abs/astro-ph/0601566v1

ASP Conf.Ser. 349 (2006) 323

Astronomy and Astrophysics

Astrophysics

4 pages, 3 figures, proceedings of the PhD School "Astrophysics of Variable Stars", eds. C. Sterken and C. Aerts, ASP Conferen

Scientific paper

GW Vir variables are the pulsating members in the spectroscopic class of PG 1159 stars. In order to understand the characteristic differences between pulsating and non-pulsating PG 1159 stars, we analyse FUSE spectra of eleven objects, of which six are pulsating, by means of state-of-the-art NLTE model atmospheres. The numerous metal lines in the FUV spectra of these stars allow a precise determination of the photospheric parameters. We present here preliminary results of our analysis.

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