Journal Article

Accretion disc in the massive V448 Cygni system

G. Djurašević, I. Vince, T. S. Khruzina and E. Rovithis–Livaniou

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 396, issue 3, pages 1553-1558
Published in print July 2009 | ISSN: 0035-8711
Published online June 2009 | e-ISSN: 1365-2966 | DOI:
Accretion disc in the massive V448 Cygni system

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The UBV light curves of the early–type eclipsing binary V448 Cygni, obtained at the Abastumani Astrophysical Observatory from 1964 to 1967, are re–analysed here. The analysis was made assuming the presence of an accretion disc in the system, as inferred from the light–curve shape and spectroscopic characteristics of the system. The Roche model of a binary was used, containing a geometrically and optically thick accretion disc around the hotter and more massive star. By solving the inverse problem, the orbital elements and the physical parameters of the system components and of the accretion disc were estimated. This result is important for understanding the star formation and evolution processes in the systems with massive components.

Keywords: accretion, accretion discs; binaries: eclipsing; stars: individual: V448 Cygni; stars: mass–loss

Journal Article.  5029 words.  Illustrated.

Subjects: Astronomy and Astrophysics

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