| Searching for Variable Stars in the Field of NGC 7789 |
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| 作者姓名： | Xiao-Bin Zhang Li-Cai Deng |
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| 作者单位： | Xiao-Bin Zhang，Li-Cai Deng，Yu Xin and Xu Zhou
National Astronomical Observatories，Chinese Academy of Sciences，Beijing 100012;
CAS-PKU Joint Beijing Astrophysics Center，Beijing 100871 |
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| 基金项目： | Supported by the National Natural Science Foundation of China. |
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| 摘 要： | We present the results of a time-series CCD photometric survey of variable stars in the field of the open cluster NGC 7789. In a field of about one degree centering on the cluster, a total of 28 new variable stars are discovered (14 W UMa systems, nine EA-type eclipsing binaries, one RR Lyr star, and four unclassified). In addition, we recovered 11 old variables previously discovered by other authors. Preliminary parameters are given for some of these variables.
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| 关 键 词： | 恒星 电感耦合测光法 光通量 弥漫星云 初始参数 |
Searching for Variable Stars in the Field of NGC 7789 |
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| Xiao-Bin Zhang,Li-Cai Deng,Yu Xin,Xu Zhou.Searching for Variable Stars in the Field of NGC 7789[J].Chinese Journal of Astronomy and Astrophysics,2003,3(2):151-165. |
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| Authors: | Xiao-Bin Zhang Li-Cai Deng Yu Xin Xu Zhou |
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| Institution: | NationalAstronomicalObservatories,ChineseAcademyofSciences,Beijing100012 |
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| Abstract: | We present the results of a time-series CCD photometric Survey of variable stars in the field of the open cluster NGC 7789,In a field of about one degree centering on the cluster,a total of 28 new variable stars are discovered (14W UMa systems,nine EA-type eclising binaries,one RR Lyr star,and four unclassfied ),In addition,we recovered 11 old variables previously discovered by other authors.Preliminary parameters are given for some of these variables. |
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| Keywords: | open clusters: individual (NGC 7789) - stars: variables (general) - binaries: general |
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