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首页> 外文期刊>PASJ: Publications of the Astronomical Society of Japan >Photometric investigation of the contact binary GU Orionis with high metallicity
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Photometric investigation of the contact binary GU Orionis with high metallicity

机译：高金属性接触二元顾云杆菌的光度调查

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摘要

GU Ori was observed with the 1 m telescope at Yunnan Observatories in 2005. To determine its physical properties, the Wilson-Devinney program was used. The results reveal that GU Ori is a W-subtype shallow contact binary with a more massive but cooler second star. The masses of its two component stars are estimated to be M-1 = 0.45 M-circle dot, M-2 = 1.05 M-circle dot. The O'Connell effect was reported to be negative on the light curves observed in 2005. However, it changed to a positive one on the light curves observed from 2011 to 2012. The mean surface temperatures of star 2 (T-2) determined by the two sets of light curves were different, which may result from stellar activity. The O - C diagram shows that the period of GU Ori is decreasing at a rate of dP/dt = -6.24 x 10(-8) dyr(-1), which may be caused by mass transfer from star 2 to star 1 with a rate of dM(2)/dt = -2.98 x 10(-8) M-circle dot yr(-1). GUOri is a contact binary with quite high metallicity.
机译：2005年云南观察员的1米望远镜观察了顾奥里。为了确定其物理性质，使用了Wilson-Devinney计划。 结果表明，顾奥利是一个W-Subtype浅接触二进制，具有更巨大但冷却的第二星。 其两个分量恒星的质量估计为M-1 = 0.45 m圆点，M-2 = 1.05 m圆点。 据报道，O'connell效应是对2005年观察到的光曲线的负面影响。然而，它在从2011到2012年观察到的光线上变为正面。星星2（T-2）的平均表面温度 两组光曲线是不同的，这可能是由恒星活性产生的。 O-C图表明，GU ORI的时期以DP / DT = -6.24×10（-8）DYR（-1）的速率下降，这可能是由SAR 2至Star 1的质量转移引起的 DM（2）/ dT = -2.98×10（-8）M圆点YR（-1）的速率。 Guori是一个具有相当高的金属性的二进制。

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