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Modeling the spectrum of TT Hya: an Algol binary with a disc

Published online by Cambridge University Press:  02 March 2005

J. Budaj  and
M.T. Richards
J. Budaj
Affiliation:
Dept. of Astronomy and Astrophysics, Penn State University, Davey Lab. 525, University Park, PA 16802, USA, email: [email protected] Astronomical Institute, Tatranská Lomnica, 05960, Slovakia
M.T. Richards
Affiliation:
Dept. of Astronomy and Astrophysics, Penn State University, Davey Lab. 525, University Park, PA 16802, USA, email: [email protected]
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Abstract

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We calculate the synthetic spectra of TT Hya, an Algol-type eclipsing binary system which contains an A-type primary surrounded by a disc, and an evolved secondary which fills its Roche lobe. A new code SHELLSPEC was developed to solve the simple radiative transfer along the line of sight propagating through the 3D moving medium in LTE. The synthetic spectra are then compared with the observed ones which enable us to derive independent constraints on the behavior of the state quantities, the velocity field and the geometry of the disc.To search for other articles by the author(s) go to: http://adsabs.harvard.edu/abstract_service.html

Keywords

Radiative transferaccretionaccretion discsstars: binaries: eclipsingstars: binaries: closestars: novaecataclysmic variablesstars: individual: (TT Hya)
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 2004 , Issue IAUS224 , July 2004 , pp. 886 - 899
Copyright
© 2004 International Astronomical Union