A study of variable stars in the open cluster NGC 1582 and its surrounding field

作     者：Fang-Fang Song Ali Esamdin Lu Ma Jin-Zhong Liu Yu Zhang Hu-Biao Niu Tao-Zhi Yang 

作者机构：Xinjiang Astronomical ObservatoryChinese Academy of SciencesUrumqi 830011China University of Chinese Academy of SciencesBeijing 100049China 

出 版 物：《Research in Astronomy and Astrophysics》 (天文和天体物理学研究（英文版）)

年 卷 期：2016年第16卷第10期

页      面：35-44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 under Grant No.11273051 the program of Light in China Western Region(LCWR,Grant Nos.XBBS201221 and 2015-XBQN-A-02) 

主　　题：NGC 1582    open cluster    variable stars    multi color observation    magnitude 

摘      要：This paper presents Charge-Coupled Device time-series photometric observations of the open cluster NGC 1582 and its surrounding field with Johnson B, V and R filters by using the Nanshan 1 m telescope administered by Xinjiang Astronomical Observatory. 19 variable stars and three variable candi- dates were detected in a 45＇ - 48.75＇ field around the cluster. 12 of the variable stars are newly-discovered variable objects. The physical properties, classifications and memberships of these 22 objects are studied through their light curves, their positions on the color-magnitude diagram and with archival data from the Naval Observatory Merged Astrometric Dataset. Among these objects, five are eclipsing binary systems, six are pulsating variable stars including one known 6 Scuti star and one newly-discovered RR Lyrae star. The distance to the RR Lyrae star is estimated to be 7.9 - 0.3 kpc, indicating that the star is located far behind the cluster. Four variable stars are probable members of the cluster, and 13 of the 22 objects are confirmed to be field stars.