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The Role of Electron Scattering in Probing the Wind from the Hot Star in Symbiotic Binaries

Published online by Cambridge University Press:  23 April 2012

Matej Sekeráš  and
Augustin Skopal
Matej Sekeráš
Affiliation:
Astronomical Institute of the Slovak Academy of Sciences, Tatranská Lomnica, Slovakia email: msekeras@ta3.sk, skopal@ta3.sk
Augustin Skopal
Affiliation:
Astronomical Institute of the Slovak Academy of Sciences, Tatranská Lomnica, Slovakia email: msekeras@ta3.sk, skopal@ta3.sk
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Abstract

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We modeled the broad wings of the OVI 1032,1038Å resonance lines and HeII 1640Å line in the spectra of some symbiotic stars by the electron-scattering process. We determined an empirical relationship between the emission measure of the symbiotic nebula and the electron optical depth. This allowed us to determine a contribution from the electron-scattering also to emission lines, which originate in a more extended, low density part of the nebula. For example, subtracting the electron-scattering contribution from the Hα line profile makes it possible to determine more precisely the mass loss rate via the wind from the hot star in symbiotic binaries.

Keywords

binaries: symbioticscatteringline: profiles
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 7 , Symposium S282: From Interacting Binaries to Exoplanets: Essential Modeling Tools , July 2011 , pp. 315 - 316
Copyright
Copyright © International Astronomical Union 2012

References

Castor, J. I., Smith, L. F. & van Blerkom, D. 1970, ApJ, 159, 1119Google Scholar
Skopal, A. 2006, A&A, 457, 1003Google Scholar
Skopal, A., Sekeráš, M., González-Riestra, R., & Viotti, R. F. 2009, A&A, 507, 1531Google Scholar
Skopal, A., et al. , 2011, A&A, submittedGoogle Scholar