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Kruk, J. W.
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Topics
Publications (5/5 displayed)
- 2019Spectral analysis of the hybrid PG 1159-type central stars of the planetary nebulae Abell 43 and NGC 7094citations
- 2018Metal abundances in hot white dwarfs with signatures of a superionized windcitations
- 2007Abundances of Trace Elements in PG 1159 Stars
- 2006Light Metals in PG1159 Central Stars
- 2005HST and FUSE Spectroscopy of Hot Hydrogen-Rich Central Stars of Planetary Nebulaecitations
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document
Abundances of Trace Elements in PG 1159 Stars
Abstract
We present results of a new spectral analysis of four hydrogen deficient post-AGB stars of the spectral type PG1159. We analysed high-resolution FUV spectra obtained with FUSE (Far Ultraviolet Spectroscopic Explorer) by means of NLTE model atmospheres in order to determine the abundances of light metals, e.g. silicon, phosphorus, and sulphur in the atmospheres of these objects. We compared our results to stellar evolution models and find consistent abundances for silicon and phosphorus, but for sulphur the observed strongly subsolar abundance cannot be explained....