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Photometry, period variations and light curve analysis of eclipsing binary V1191 Cyg

机译：偏光二元V1191 Cyg的光度法，周期变化和光曲线分析

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New observations of the eclipsing binary system V1191 Cyg were carried out by using CCD in BVR filters and new times of light minimum and new ephemeris were obtained. For the first time, the O-C curve of this binary was analyzed by using the Kalimeris method and the orbital period and its rate of change were calculated as functions of time. The BVR light curves were analyzed using both the Binary Maker 3.0 and PHOEBE 0.31a programs to determine some geometrical and physical parameters. By analyzing O-C diagram, the period variation was calculated to be dP=dt = 3.13 × 10~(-6) d yr~(-1) and the rate of mass transfer was M_c = 5.23 × 10~(-7) M_⊙ yr~(-1).
机译：通过在BVR滤光片中使用CCD对日食二元系统V1191 Cyg进行了新观察，并获得了新的最小光时间和新星历。首次使用Kalimeris方法分析了该双星的O-C曲线，并计算了轨道周期及其变化率作为时间的函数。使用Binary Maker 3.0和PHOEBE 0.31a程序分析了BVR的光曲线，以确定一些几何和物理参数。通过分析OC图，计算出周期变化为dP = dt = 3.13×10〜（-6）d yr〜（-1），传质速率为M_c = 5.23×10〜（-7）M_⊙ yr〜（-1）。

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