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Preprint 09/03

NLTE Spectral Analysis of Central Stars of PNe Interacting with the ISM

Rauch, T. (1,2), Kerber, F. (3), Furlan, E. (4), Werner, K. (2)

(1) Dr.-Remeis-Sternwarte, Bamberg, Universität Erlangen-Nürnberg, Germany
(2) Institut für Astronomie und Astrophysik, Universität Tübingen, Germany
(3) Space Telescope - European Coordinating Facility, Garching, Germany
(4) Center for Radiophysics and Space Research, Cornell University, Ithaca, NY, USA

To be published in: ASP Conference Series

Abstract. The analysis of Planetary Nebulae (PNe) provides a tool to investigate the properties of their exciting central stars (CSPN) at the moment of the PN ejection as well as on the properties of the ambient interstellar medium (ISM). The spectral analysis of the CSPN is a prerequisite to calculate the ionizing flux which is a crucial input for reliable PN modeling.
In the framework of a systematic study of PNe interacting with the ISM, we present preliminary results of ongoing NLTE spectral analyses of ten of their CS based on new optical medium-resolution spectra.
Key words: stars: AGB and post-AGB - stars: atmospheres - stars: early-type - planetary nebulae

Preprint (58 kb PDF file including figures)

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