Back to Volume
Paper: FUSE Spectroscopy of PG 1159 Stars
Volume: 334, 14th European Workshop on White Dwarfs
Page: 225
Authors: Reiff, E.; Rauch, T.; Werner, K.; Kruk, J.W.
Abstract: PG 1159 stars are hot hydrogen-deficient post-AGB stars with effective temperatures within a range from 75,000 K up to 200,000 K. These stars are probably the result of a late helium-shell flash that had occurred during their first descent from the AGB. The lack of hydrogen is caused by flash-induced envelope mixing and burning of H in deeper regions. Now the former intershell matter is seen on the surface of the stars. Hence the stellar atmospheres show metal abundances drastically different from the solar values. Our sample comprises ten PG 1159 stars with effective temperatures between 85,000 K and 170,000 K. We present first results of our spectral analysis based on FUV spectra obtained with the Far Ultraviolet Spectroscopic Explorer (FUSE).
Back to Volume