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HST/STIS ultraviolet spectroscopy of the supersoft X-ray source RX J0439.8-6809
A. van Teeseling, B. T. Gaensicke, K. Beuermann +3
We present ultraviolet observations of the supersoft X-ray source RXJ0439.8-6809 obtained with the Hubble Space Telescope Imaging Spectrograph. The ultraviolet spectrum is a very b…
NLTE Model Atmospheres for Central Stars of Planetary Nebulae
Thomas Rauch, Jochen L. Deetjen, Stefan Dreizler +1
Present observational techniques provide stellar spectra with high resolution at a high signal-to-noise ratio over the complete wavelength range -- from the far infrared to the X-r…
The Classical Stellar Atmosphere Problem
K. Werner, S. Dreizler
We introduce the classical stellar atmosphere problem and describe in detail its numerical solution. The problem consists of the solution of the radiation transfer equations under…