Open AccessAccretion disc in the massive V448 Cygni system
Author(s) -
Djurašević G.,
Vince I.,
Khruzina T. S.,
RovithisLivaniou E.
Publication year - 2009
Publication title -
monthly notices of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.058
H-Index - 383
eISSN - 1365-2966
pISSN - 0035-8711
DOI - 10.1111/j.1365-2966.2009.14834.x
Subject(s) - physics , astrophysics , light curve , accretion (finance) , astronomy , observatory , binary number , accretion disc , binary star , binary system , orbital elements , stars , mathematics , arithmetic
ABSTRACT 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.