Volume 374, Number 2, August I 2001
|Page(s)||638 - 645|
|Section||Interstellar and circumstellar matter|
|Published online||15 August 2001|
A photometric study of the massive binary RY Sct *
Astronomical Observatory, Volgina 7, 11050 Belgrade, Yugoslavia
2 Astronomical Institute of Uzbek Academy of Sciences, Astronomicheskaya 33, 700052 Tashkent, Uzbekistan and Isaac Newton Institute of Chili, Uzbek branch
3 Astronomical Institute of Uzbek Academy of Sciences, Astronomicheskaya 33, 700052 Tashkent, Uzbekistan
Corresponding author: G. Djurasević, firstname.lastname@example.org
Accepted: 17 May 2001
The present study deals with the problem of the estimation of the orbital and physical parameters for the EB-type eclipsing binary RY Sct, based on the interpretation of new photometric U B V R observations. The light curves obtained at the Maidanak Observatory during 1979-94 show a slight asymmetry around the secondary minima and a small difference in the height of the successive maxima. The light curves are analysed in the framework of the Roche computer model (Djurašević [CITE]) by applying the inverse-problem method (Djurašević [CITE]) based on Marquardt's ([CITE]) algorithm. The analysis shows that RY Sct system is in an overcontact configuration with and , generating total-annular eclipses. The basic parameters of the system and of the active region are estimated for all individual U, B, V and R light curves. Our results suggested a mass exchange between the components and mass loss through the outer Lagrangian point L3. This could be taken as a possible mechanism in the formation of the circumstellar envelope of toroidal form lying in the orbital plane of the system.
Key words: stars: binaries: eclipsing, close / stars: early-type / stars: individual: RY Sct
© ESO, 2001
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.