| 中等年龄疏散星团NGC752中的QXAnd变星的测光研究 |
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| 引用本文： | 罗杨平,罗常青,罗志全.中等年龄疏散星团NGC752中的QXAnd变星的测光研究[J].西华师范大学学报(哲学社会科学版),2009(4):360-364. |
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| 作者姓名： | 罗杨平 罗常青 罗志全 |
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| 作者单位： | 西华师范大学理论物理研究所,四川南充637009 |
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| 基金项目： | 国家自然科学基金资助项目（10778719）.致谢：感谢国家天文台邓李才,张孝斌二位研究员对本工作的大力支持. |
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| 摘 要： | QxAnd变星是中等年龄疏散星团NGC752中的一个短周期的WUMa类型的相接双星．在2007年9月10日到12月25日期间，利用国家天文台兴隆85cm反射式望远镜对QXAnd变星进行B和V测光研究．我们得到了B和V两个波段的光变曲线；利用K—W方法定出光变极小时刻；通过经典的O—C方法得到QXAnd变星的周期P=4．12168117d和周期变化率dp／dt=1．89×10^-7d／a．
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| 关 键 词： | NGC752 QX And 相接双星 |
Photometric Studies of QX And in the Intermediate-age Open Cluster NGC 752 |
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| LUO Yang-ping,LUO Chang-qin,LUO Zhi-quan.Photometric Studies of QX And in the Intermediate-age Open Cluster NGC 752[J].Journal of China West Normal University:Natural Science Edition,2009(4):360-364. |
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| Authors: | LUO Yang-ping LUO Chang-qin LUO Zhi-quan |
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| Institution: | ( Institute of Theoretical Physics, China West Normal University, Nanchong 637009, China) |
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| Abstract: | QX And is a short-period eclipsing binary with W UMa type in the imteumediate-age open cluster NGC 752. potometric oservations of QX And in B and V filters were carried out from Sep 18,2007 to Dec 25,2007 by the use of 85 cm reflector telescope at the Xinglong station of National Astronomical Observatory. Light curves in B an V filters were derived and Light minimuns were determined with the K-W method. Finally,based on the classical O-C method,the period and the rate of period were determined to be P =4. 12168117 day and dp/dt = 1.89 × 10^-7day/yr. |
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| Keywords: | NGC752 QX And contact binary |
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