Institutional Repository of Optical Astronomy Research Laboratory
| Investigating variable stars in the open cluster NGC 1912 and its surrounding field | |
Li, Chun-Yan1,2 ; Esamdin, Ali1; Zhang, Yu1; Song, Fang-Fang1,2; Zeng, Xiang-Yun1,2; Chen, Li2,3; Niu, Hu-Biao1,4; Bai, Jian-Ying1,2; Liu, Jun-Hui1
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| 2021-04-01 | |
| Source Publication | Research in Astronomy and Astrophysics
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| ISSN | 1674-4527 |
| Volume | 21Issue:3Pages:68 |
| Contribution Rank | 1 |
| Abstract | In this work, we studied the variable stars in the open cluster NGC 1912 based on the photometric observations and Gaia DR2 data. More than 3600 CCD frames in B, V, R filters were reduced, and we obtained the light curves that span about 63 hours. By analyzing these light curves, we detected 24 variable stars, including 16 periodic variable stars, seven eclipsing binaries and one star whose type is unclear. Among these 24 variable stars, 11 are newly discovered, which are classified as six gamma Doradus stars, one delta Scuti star, three detached binaries and one contact binary. We also confirmed 13 previously known variable stars. Based on cluster members identified by Cantat-Gaudin et al. (2018), we inferred cluster memberships for these detected variable stars. Using Gaia DR2 data, we plotted a new color-magnitude diagram for NGC 1912, and showed the nature of variable cluster members in kinematical properties and heliocentric distance. Among the 24 variable stars, seven variables are probable cluster members, which show homogeneity in kinematic characters and space position with the established cluster members. Four of the seven variable cluster members are the previously discovered stars, consisting of two gamma Dor stars and two delta Sct stars. The remaining three variable cluster members, which are all gamma Dor stars, are firstly detected in this work. The main physical parameters of these variable cluster members estimated from the color-magnitude diagram are log(age/yr) = 8.75, [Fe/H] = -0.1, m - M = 10.03 mag, and E(B - V) = 0.307. |
| Keyword | open clusters and associations: NGC 1912 techniques: photometric stars: variables: general visible open clusters delta-scuti proper motions convection pulsation telescope population distances algorithm catalog Astronomy & Astrophysics |
| Subtype | Article |
| DOI | 10.1088/1674-4527/21/3/068 |
| URL | 查看原文 |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000657378800001 |
| CSCD ID | CSCD:6932033 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.xao.ac.cn/handle/45760611-7/4716 |
| Collection | 光学天文与技术应用研究室 科研仪器设备产出_利用南山1米大视场望远镜（NOWT）观测数据的文章 |
| Corresponding Author | Esamdin, Ali |
| Affiliation | 1.Xinjiang Astronomical Observatory, the Chinese Academy of Sciences, Urumqi 830011, China; 2.University of Chinese Academy of Sciences, Beijing 100049, China; 3.Shanghai Astronomical Observatory, the Chinese Academy of Sciences, Shanghai 200030, China; 4.Department of Astronomy, Beijing Normal University, Beijing 100875, China |
| Recommended Citation GB/T 7714 | Li, Chun-Yan,Esamdin, Ali,Zhang, Yu,et al. Investigating variable stars in the open cluster NGC 1912 and its surrounding field[J]. Research in Astronomy and Astrophysics,2021,21(3):68. |
| APA | Li, Chun-Yan.,Esamdin, Ali.,Zhang, Yu.,Song, Fang-Fang.,Zeng, Xiang-Yun.,...&Liu, Jun-Hui.(2021).Investigating variable stars in the open cluster NGC 1912 and its surrounding field.Research in Astronomy and Astrophysics,21(3),68. |
| MLA | Li, Chun-Yan,et al."Investigating variable stars in the open cluster NGC 1912 and its surrounding field".Research in Astronomy and Astrophysics 21.3(2021):68. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| Li-2021-Investigatin（6809KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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