[KSCI] Korea Science Citation Index Service

http://dx.doi.org/10.5303/PKAS.2015.30.2.211

PERIOD VARIATION OF EROS ECLIPSING BINARY SYSTEMS IN THE LARGE MAGELLAN CLOUD

RITTIPRUK, P. (Department of Astronomy and Space Science, Sejong University)
HONG, K.S. (Korea Astronomy and Space Science Institute)
KANG, Y.W. (Department of Astronomy and Space Science, Sejong University)

Publication Information

Publications of The Korean Astronomical Society / v.30, no.2, 2015 , pp. 211-214 More about this Journal

Abstract

We investigated the period variation for 79 eclipsing binary systems using 20 years (1990-2009) of EROS, Macho, and OGLE survey observations. We discovered 9 apsidal motions, 8 mass transfers, 5 period increasing and decreasing systems, 12 light-travel-time effects, 5 eccentric systems and 40 other systems showing no period variations. We select 3 representative eclipsing binary systems; EROS 1052 for apsidal motion, EROS 1056 for mass transfer, and EROS 1037 for the light-travel-time effect. We determine the period variation rate (dP/dt), orbital parameters of the 3rd body (e3, ${\omega}_3$ , $f(m_3)$ , $P_3$ , $T_3$ ), apsidal motion parameters ( $d{\omega}/dt$ , U, Ps, Pa, e) and apsidal motion period by analyzing the light curves and O-C diagrams.

Keywords

(star:) binary: eclipsing; star: individual (EROS 1037, EROS 1052, EROS 1056);

Citations & Related Records

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