[AIT logo]

Institut für Astronomie und Astrophysik

Abteilung Astronomie

Sand 1, D-72076 Tübingen, Germany
[Uni logo]

Hinweis: Einige Seiten auf astro.uni-tuebingen.de können veraltet sein und werden nicht mehr aktualisiert.
Note: Some webpages at astro.uni-tuebingen.de may be outdated and will no longer be updated.


Preprint 11c/12


HST/COS Spectroscopy of Hydrogen-Deficient Post-AGB Stars: Clues on the Nature of O(He)-Type Stars

N.Reindl (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 Tübingen
(2) NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA

To be published in: Proceedings, 18th European White Dwarf Workshop, Krakow, Poland, 13-17 Aug. 2012, ASP Conference Series

Abstract. O(He) stars are unique amongst the hottest post-AGB stars because their atmospheres are composed of almost pure helium. We present a spectral analysis of HST/COS UV observations by means of NLTE model-atmosphere techniques and discuss their status in the hydrogen-deficient post-AGB evolutionary sequence and in the double-degenerate merger scenario.
 

Preprint (121 kb PDF file including figures)


[Home Page] [Preprints 2012] [Quick Reference] [Feedback]


Jürgen Barnstedt | Impressum
Last modified 16 Oct 2012
[Valid HTML 4.0!]