Binary open clusters in the Gaia data
文献类型：期刊论文
| 作者 | Song, Fangfang1,2 ; Esamdin, Ali1,2; Hu, Qingshun1,2; Zhang, Mengfan1,2
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| 刊名 | ASTRONOMY & ASTROPHYSICS
 |
| 出版日期 | 2022-10-07 |
| 卷号 | 666页码:9 |
| 关键词 | open clusters and associations general stars evolution galaxies star clusters general |
| ISSN号 | 0004-6361 |
| DOI | 10.1051/0004-6361/202243524 |
| 通讯作者 | Song, Fangfang(songfangf@xao.ac.cn) |
| 英文摘要 | Context. Observations indicate that the fraction of potential binary star clusters in the Milky Way is either the same or lower than that of the Magellanic Clouds. The unprecedented precision in the parallax measurements by Gaia has allowed for the discovery of a growing number of new binary open clusters (OCs). Aims. We aim to survey the candidates of truly binary open clusters that are formed simultaneously, using information from the Gaia database. Methods. Based on the most recent catalog of open clusters, we investigated the interactions of adjacent binary open clusters in our Galaxy within separations of 50 pc. We compared their coordinates, proper motions, parallaxes, and color-magnitude diagrams (CMDs) via binary plots for all candidate pairs. The candidates of truly binary open clusters are selected on the basis of their common proper motions and consistent behaviors in the CMDs of different clusters that are limited to a separation of 50 pc. Results. About ten pairs of the selected binary open clusters appear to be the same clusters, based on evidence that almost half of the cluster members are shared. Fourteen pairs are possibly true binaries, implying that they may come from the same clouds, among which five pairs are newly discovered. In addition, two clusters, UBC 46 and UBC 192, were found to be part of the stellar complex LISCA I. Our results confirm that OCs born in groups are usually composed of young open clusters. |
| WOS关键词 | OPEN STAR-CLUSTERS ; EVOLUTION ; RAVE |
| 资助项目 | Natural Science Foundation of China[NSFC-U2031209] |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000864854000003 |
| 出版者 | EDP SCIENCES S A |
| 资助机构 | Natural Science Foundation of China |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/4905]  |
| 专题 | 新疆天文台_光学天文与技术应用研究室 |
| 通讯作者 | Song, Fangfang |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Xinjiang, Peoples R China |
| 推荐引用方式 GB/T 7714 | Song, Fangfang,Esamdin, Ali,Hu, Qingshun,et al. Binary open clusters in the Gaia data[J]. ASTRONOMY & ASTROPHYSICS,2022,666:9. |
| APA | Song, Fangfang,Esamdin, Ali,Hu, Qingshun,&Zhang, Mengfan.(2022).Binary open clusters in the Gaia data.ASTRONOMY & ASTROPHYSICS,666,9. |
| MLA | Song, Fangfang,et al."Binary open clusters in the Gaia data".ASTRONOMY & ASTROPHYSICS 666(2022):9. |
入库方式： OAI收割
来源：新疆天文台
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