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On the accretion onto the white dwarfs in symbiotic binaries: A test with the Thomson scattering process

Published online by Cambridge University Press:  21 February 2013

Matej Sekeráš  and
Augustin Skopal
Matej Sekeráš
Affiliation:
Astronomical Institute, Slovak Academy of Sciences, 059 60 Tatranská Lomnica, Slovakia email: [email protected], email: [email protected]
Augustin Skopal
Affiliation:
Astronomical Institute, Slovak Academy of Sciences, 059 60 Tatranská Lomnica, Slovakia email: [email protected], email: [email protected]
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Abstract

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We tested the origin of the nebular radiation in the symbiotic star AG Dra, during different levels of its activity. We modeled the broad wings of the OVI 1032, 1038 Å resonance lines and HeII 1640 Å line by the Thomson scattering process, and determined the electron-scattering optical depth, τe, of the symbiotic nebula. The increase of τe during active phases results from an increase in the accretion rate onto the white dwarf.

Keywords

Binaries: symbioticscatteringline: profilesaccretion
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 8 , Symposium S290: Feeding Compact Objects: Accretion on All Scales , August 2012 , pp. 305 - 306
Copyright
Copyright © International Astronomical Union 2013

References

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Sekeráš, M., Skopal, A. 2012, MNRAS, (in press)Google Scholar