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arXiv · 1102.3090

UV Spectroscopy of the Central Star of the Planetary Nebula A43

Ellen Ringat·Felix Friederich·Thomas Rauch·Klaus Werner·Jeffrey W. Kruk
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Abstract

About 25% of all post-AGB stars are hydrogen-deficient, e.g. the PG1159 stars with a typical abundance pattern He:C:O = 33:50:17 (by mass). Only four of about 40 known PG1159 stars exhibit H in their spectra. The exciting star of the planetary nebula A43 is one of these so-called hybrid PG1159 stars. We present preliminary results of an on-going spectral analysis by means of NLTE model-atmosphere techniques based on UV spectra obtained with FUSE, HST/GHRS, and IUE as well as on optical observations.

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Ellen Ringat, Felix Friederich, Thomas Rauch, Klaus Werner, Jeffrey W. Kruk. 2011-02-15. UV Spectroscopy of the Central Star of the Planetary Nebula A43. https://arxiv.org/abs/1102.3090

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