Abstract The BVRI light curves were measured for the eclipsing binary HAT 141-03513 as a part of our long-term observational project for studying low-mass eclipsing binaries with a short orbital period. The asymmetric light curve and the difference in brightness in maxima, are probably the result of presence of a hot region on the surface of one component. The light curve solution in Phoebe results to the semidetached, nearly contact configuration, where the primary fills its Roche lobe. The temperature of primary component was fixed to T 1 = 4220 K according to Gaia results, which gives us T 2 = 3555 ± 150 K for the secondary. The spectral type of the primary component was estimated to be K6 and the photometric mass ratio was derived q = 0.435 ± 0.015 . Characteristics of the hot region were estimated. The properties of this mass-exchanging semidetached binary are compared with two previously known similar systems, V361 Lyr and V549 Cam.

中文翻译：

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HAT 141-03513 的光度学研究：V361 Lyr 系统的另一个双胞胎

摘要 作为我们研究具有短轨道周期的低质量食双星的长期观测项目的一部分，测量了食双星 HAT 141-03513 的 BVRI 光变曲线。不对称的光变曲线和最大值的亮度差异可能是一个组件表面存在热区域的结果。Phoebe 中的光变曲线解决方案导致半分离、几乎接触的配置，其中原色填充其 Roche 叶。根据 Gaia 结果，初级组件的温度固定为 T 1 = 4220 K，这使次级组件的温度为 T 2 = 3555 ± 150 K。主要成分的光谱类型估计为 K6，测光质量比为 q = 0.435 ± 0.015。估计了热区的特征。