V380 Dra: New short-period totally eclipsing active binary


Ozdarcan O.

NEW ASTRONOMY, cilt.27, ss.19-24, 2014 (SCI İndekslerine Giren Dergi) identifier identifier

Özet

In this study, first complete and standard BVR light curves and photometric analysis of the eclipsing binary system V380 Dra are presented. Photometric analysis result indicates that the system has components which are cool main sequence stars. In light and color curves, remarkable asymmetry is observed, especially after secondary minimum, which is believed to be a result of chromospheric activity in one or both components. O-C diagram of available small number of eclipse times, together with new eclipse timings in this work, exhibits no significant variation. Preliminary light curve solution shows that the secondary minimum is total eclipse. By using the advantage of total eclipse and mass-luminosity relation, it is found that the system has a possible mass ratio of q = 0.81. First estimation of masses and radii of primary and secondary components are M-1 = 0.77 M-circle dot, M-2 = 0.62 M-circle dot and R-1 = 0.93 R-circle dot, R-2 = 0.77 R-circle dot, respectively. (C) 2013 Elsevier B.V. All rights reserved.