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Preprint 10d/12

(F)UV Spectroscopy of 15 Extremely Hot, Hydrogen-Rich Post-AGB Stars

M. Ziegler (1), T. Rauch (1), K. Werner (1), J. W. Kruk (2)

(1) Institute for Astronomy and Astrophysics, Kepler Center for Astro and Particle Physics, Eberhard Karls University, Sand 1, 72076 Tuebingen, Germany
(2) NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA

To be published in: UV Astronomy: HST and Beyond, Kaua'i, Hawai'i, USA, June 18-21, 2012

Abstract. We present spectral analyses of 15 DAO- and O(H)-type central stars that cover a wide range of effective temperature (70 000 – 130 000 K) and surface gravity (log g = 5.4 – 7.4). Thus, they represent well the stellar hydrogen-rich post-AGB evolution. Based on high-resolution, high-S/N FUSE and HST/STIS observations, our approach comprises state-of-the-art fully line blanketed non-LTE stellar model atmospheres as well as models of the interstellar line absorption.
 

Preprint (3,33 Mb PDF file including figures)

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