Searching for Variable Stars in the Field of NGC 7789

作     者：Xiao-Bin Zhang, Li-Cai Deng, Yu Xin and Xu ZhouNational Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012 CAS-PKU Joint Beijing Astrophysics Center, Beijing 100871 

作者机构：National Astronomical Observatories CAS NAOC Beijing 100012 China []CAS-PKU Joint Beijing Astrophysics Center Beijing 100871 

出 版 物：《Chinese Journal of Astronomy and Astrophysics》 (中国天文和天体物理学报（英文版）)

年 卷 期：2003年第3卷第2期

页      面：151-165页

核心收录：

学科分类：07[理学] 070401[理学-天体物理] 0704[理学-天文学] 

基　　金：Supported by the National Natural Science Foundation of China 

主　　题：open clusters: individual (NGC 7789)   stars: variables (general)   binaries: general 

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.