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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
Affiliation:
Astronomical Institute, Slovak Academy of Sciences, 059 60 Tatranská Lomnica, Slovakia email: msekeras@ta3.sk, email: skopal@ta3.sk
Augustin Skopal
Affiliation:
Astronomical Institute, Slovak Academy of Sciences, 059 60 Tatranská Lomnica, Slovakia email: msekeras@ta3.sk, email: skopal@ta3.sk
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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.

Type
Contributed Papers
Copyright
Copyright © International Astronomical Union 2013

References

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