AcDc - A new code for the NLTE spectral analysis of accretion discs: application to the helium CV AM CVn

Details AcDc - A new code for the NLTE spectral analysis of accretion discs: application to the helium CV AM CVn AcDc - A new code for the NLTE spectral analysis of accretion discs: application to the helium CV AM CVn

2004-08-19

arxiv.org/abs/astro-ph/0408352v1

Astron.Astrophys. 428 (2004) 109-115

Astronomy and Astrophysics

Astrophysics

7 pages, 11 figures to be published in A&A

Scientific paper

10.1051/0004-6361:20041522

We present a recently developed code for detailed NLTE calculations of accretion disc spectra of cataclysmic variables and compact X-ray binaries. Assuming a radial structure of a standard alpha-disc, the disc is divided into concentric rings. For each disc ring the solution of the radiation transfer equation and the structure equations, comprising the hydrostatic and radiative equilibrium, the population of the atomic levels as well as charge and particle conservation, is done self-consistently. Metal-line blanketing and irradiation by the central object are taken into account. As a first application, we show the influence of different disc parameters on the disc spectrum for the helium cataclysmic variable AM CVn.

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