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Preprint 07/10

Spectral Analyses Of The Hottest White Dwarfs: Grids Of Spectral Energy Distributions For Extremely Hot, Compact Stars In The Framework Of The Virtual Observatory

Thomas Rauch (1), Ellen Ringat (1), Klaus Werner (1)

(1) Institute for Astronomy and Astrophysics, Kepler Center for Astro and Particle Physics, Eberhard Karls University, Sand 1, D-72076 Tübingen,Germany

To be published in: The proceedings of the Physics of Accreting Compact Binaries Conference

Abstract. Present X-ray missions like Chandra and XMM-Newton provide high-resolution and high-S/N observations of extremely hot white dwarfs, e.g. burst spectra of novae. Their analysis requires adequate Non-LTE model atmospheres.
The Tübingen Non-LTE Model-Atmosphere Package TMAP can calculate such model atmospheres and spectral energy distributions at a high level of sophistication.
In the framework of the Virtual Observatory, the German Astrophysical Virtual Observatory (GAVO) offers TheoSSA, a Virtual Observatory (VO) service that provides easy access to theoretical SEDs.
We present a new grid of SEDs, that is calculated in the parameter range of novae and supersoft X-ray sources.
 

Preprint (323 kb PDF file including figures)

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