[KSCI] Korea Science Citation Index Service

http://dx.doi.org/10.5303/JKAS.2014.47.3.99

PERIOD VARIATION STUDY OF THE NEGLECTED ALGOL ECLIPSING BINARY SYSTEM V346 CYGNIUS

Hanna, Magdy (National Research Institute of Astronomy and Geophysics (NRIAG))

Publication Information

Journal of The Korean Astronomical Society / v.47, no.3, 2014 , pp. 99-104 More about this Journal

Abstract

We present the rst period variation study for the Algol eclipsing binary V346 Cyg by constructing the (O-C) residual diagram using all the available precise minima times. We conclude that the period variation can be explained by a sine-like variation due to the presence of a third body orbiting the binary in about $68.89{\pm}4.69$ years, together with a long-term orbital period decrease ( $dP/dt=-1.23{\times}10^{-7}day/yr$ ) that can be interpreted to be due to slow mass loss from the ${\delta}$ -Scuti primary component. The sinusoidal variation may also be explained by using the the Applegate (1992) mechanism involving cyclic magnetic activity due to star-spots on the secondary component. The present preliminary solution needs more precise photometric observations to be confirmed.

Keywords

binaries: close; eclipsing; Algol; semi-detached; stars: triple; stars: individual: V346 Cyg;

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Times Cited By KSCI : 1 (Citation Analysis)

Reference
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