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Are Supersoft X-ray Sources Consistent with White Dwarfs?

Published online by Cambridge University Press:  25 May 2016

A. Van Teeseling ,
J. Heise  and
P. Kahabka
A. Van Teeseling
Affiliation:
Universitäts-Sternwarte Göttingen, Geismarlandstr. 11, D-37083 Göttingen
J. Heise
Affiliation:
SRON Laboratory for Space Research, Sorbonnelaan 2, NL-3584 CA Utrecht
P. Kahabka
Affiliation:
Astronomical Institute “Anton Pannekoek”, Kruislaan 403, NL-1098 SJ Amsterdam

Extract

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Van den Heuvel et al. (1992) argued that the emission from supersoft X-ray sources can be explained by steady nuclear burning of hydrogen accreted onto massive white dwarfs. An argument that has been used against this model is that the bolometric luminosities inferred from blackbody fits are sometimes above the Eddington luminosity of a ∼1 M⊙ star. However, hot white dwarfs don't radiate blackbody spectra (Heise et al. 1994). Therefore, we have calculated model spectra for hot (accreting) white dwarfs, and investigated whether the emission from supersoft X-ray sources is consistent with an origin from white dwarfs. Here we summarize some preliminary results. For a review of supersoft X-ray sources we refer to the contribution of Kahabka & Trümper to these proceedings.

Type
7 Cataclysmic Variables
Information
Symposium - International Astronomical Union , Volume 165: Compact Stars in Binaries , 1996 , pp. 445 - 450
Copyright
Copyright © Kluwer 1996 

References

Heise, J., Van Teeseling, A. & Kahabka, P. 1994, A&A 288, L45.Google Scholar
Kahabka, P., Pietsch, W. & Hasinger, G. 1994, A&A 288, 538.Google Scholar
Van den Heuvel, E.P.J. et al. 1992, A&A 262, 97.Google Scholar
Vogel, M. & Morgan, D.H. 1994, A&A 288, 842.Google Scholar
Wang, Q. 1991, MNRAS 252, 47P.Google Scholar