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- W2056185048 abstract "New BVR light curves and photometric analysis of the contact binary star V829 Her are presented. The light curves were obtained at the ÇOMU Observatory in the consecutive years 2003, 2004 and 2005. Firstly, the variation of the orbital period of the system was studied. The sinusoidal and secular changes were found and examined in terms of two plausible mechanisms, namely (i) the conservative mass transfer between the components of the system and (ii) the light-time effect due to an unseen component in the system. The instrumental magnitudes of all observed stars in this study were converted into standard magnitudes. We also study nature of asymmetries and the intrinsic variability in the light curves of the system. Light variations are summarized: (a) changes of light levels of both maxima and (b) changes of the depths of both primary and secondary eclipses. These peculiar asymmetries were interpreted in terms of dark spot(s) on the surface of the large and more massive component star. The present BVR light curves and radial velocity curves obtained by Lu, W., Rucinski, S. M., 1999. AJ 118, 515 were analysed by means of the latest version of the Wilson–Devinney program, simultaneously. Thus, the absolute parameters of the system were also derived." @default.
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- W2056185048 date "2006-12-01" @default.
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- W2056185048 title "Photometric analysis of the contact binary star V829 Hercules using light curves on three consecutive years" @default.
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- W2056185048 doi "https://doi.org/10.1016/j.newast.2006.09.002" @default.
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