Supersoft X-ray Sources. Basic Parameters

Details Supersoft X-ray Sources. Basic Parameters Supersoft X-ray Sources. Basic Parameters

2006-03-16

arxiv.org/abs/astro-ph/0603430v1

Astron.Rep. 47 (2003) 197

Astronomy and Astrophysics

Astrophysics

8 pages, 2 tables, 4 figures

Scientific paper

10.1134/1.1562214

The parameters of ten supersoft X-ray sources (RX J0439.8-6809, RX J0513.9-6951, RX J0527.8-6954, CAL 87, CAL 83, 1E 0035.4-7230, RX J0048.4-7332, 1E 0056.8-7154, RX J0019.8 +2156, RX J0925.7-4758) observed by ROSAT obtained using blanketing LTE model atmospheres are analyzed. The consistency of the resulting parameters with a model with stable/recurrent burning on the surface of the white dwarf is studied. The luminosity and sizes of seven of the sources are in good agreement with this model. The masses of the white dwarfs in these sources are estimated. A formula that can be used to estimate the masses of white dwarfs in classical supersoft sources based on their effective temperatures is presented.

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