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首页> 外文期刊>Chinese Journal of Astronomy and Astrophysics >A Photometric Study of the W UMa-type Eclipsing Binary System GSC 0445-1993
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A Photometric Study of the W UMa-type Eclipsing Binary System GSC 0445-1993

机译：W UMa型消隐二元系统GSC 0445-1993的光度研究

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Several new light minimum times for the eclipsing binary GSC 0445-1993 have been determined from the observations by Koppelman et al. and the orbital period of this system was revised. A photometric analysis was carried out using the 2003 version of the Wilson-Devinney code. The results reveal that GSC 0445-1993 is a W-type eclipsing binary with a mass ratio of q = 0.323(±0.002) and an over-contact degree of f = 22.8%(±4.2%). A small temperature difference between the components of ΔT = 135 K and an orbital inclination of i — 65.7°(±0.3°) were obtained. The asymmetry of its light curve (i.e., the O'Connell effect) for this binary star is explained by the presence of a dark spot on the more massive component.
机译：根据Koppelman等人的观测，确定了食双星GSC 0445-1993的几个新的最小光时间。并修改了该系统的轨道周期。使用2003版的Wilson-Devinney代码进行了光度分析。结果表明，GSC 0445-1993是一种W型日蚀双星，质量比为q = 0.323（±0.002），过接触度为f = 22.8％（±4.2％）。 ΔT= 135 K的分量之间的温差很小，轨道倾角为i — 65.7°（±0.3°）。该双星恒星的光曲线（即O'Connell效应）的不对称性可以通过在较大质量分量上存在暗点来解释。

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