[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Note: Some webpages at astro.uni-tuebingen.de may be outdated and will no longer be updated.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 11e/12

The Exciting Star of the Planetary Nebula NGC 246

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, Tuebingen, Germany
(2) NASA Goddard Space Flight Center, Greenbelt, MD, USA

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

Abstract. The central star (WD 0044-121) of the very large planetary nebula (PN) NGC 246 (Skull Nebula, PN G118.8-74.7) is an extremely hot, hydrogen-deficient member of the PG 1159 spectroscopic subtype, within which it is the brightest (mV = 11.78) and one of the most massive (0.74 Msun) stars. It shows non-radial g-mode pulsations, that are typical for GW Vir (= PG 1159-035) variables. We present preliminary results of a state-of-the-art NLTE spectral analysis by means of model-atmosphere techniques that is based on high-resolution and high-S/N (F)UV spectroscopy.

Preprint (158 kb PDF file including figures)

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

| Impressum
Last modified 30 Oct 2012
[Valid HTML 4.0!]