PHOTOMETRIC STUDY OF THE PULSATING, ECLIPSING BINARY OO DRA
PHOTOMETRIC STUDY OF THE PULSATING, ECLIPSING BINARY OO DRA
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DOI：
10.1088/0004-6256/148/6/106
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发表时间：
2014-08
期刊：
影响因子：
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通讯作者：
X. Zhang;L. Deng;J. Tian;K. Wang;J. J. Sun-J.;Q. Liu;H. Xin;Q. Zhou;Z. Yan;Z. Luo
中科院分区：
文献类型：
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作者：
X. Zhang;L. Deng;J. Tian;K. Wang;J. J. Sun-J.;Q. Liu;H. Xin;Q. Zhou;Z. Yan;Z. Luo
我们对脉动、食双星OO-Dra进行了全面的光度研究。对这颗恒星进行了14个晚上的同时B波段和V波段测光。从数据中得到了修正的轨道周期和新的星历。确定了双星系统的第一光度解和组成恒星的物理参数。他们揭示了OO-Dra可能是一个独立的系统，有一个质量较小的次要成分几乎填满了它的罗氏叶。通过从数据中减去日食光的变化，我们得到了更热、更大质量的主成分的本征脉动光曲线。对剩余光的频率分析在B波段和V波段数据中都得到了两个可靠的脉动模，其主频为41.865 c/d。最后，对双星系统的演化状态和脉动性质进行了简要的讨论。
We present a comprehensive photometric study of the pulsating, eclipsing binary OO Dra. Simultaneous B- and V-band photometry of the star was carried out on 14 nights. A revised orbital period and a new ephemeris were derived from the data. The first photometric solution of the binary system and the physical parameters of the component stars are determined. They reveal that OO Dra could be a detached system with a less-massive secondary component nearly filling its Roche lobe. By subtracting the eclipsing light changes from the data, we obtained the intrinsic pulsating light curves of the hotter, massive primary component. A frequency analysis of the residual light yields two confident pulsation modes in both B- and V-band data with the dominant frequency detected at 41.865 c/d. A brief discussion concerning the evolutionary status and the pulsation nature of the binary system is finally given.