Binary clusters in the Galactic I: systematic identification and classification using Gaia DR3
文献类型：期刊论文
| 作者 | Liu, Guimei1,2; Zhang, Yu1,2; Zhong, Jing4; Qin, Songmei2,3,4; Jiang, Yueyue2,3,4; Chen, Li2,4 |
| 刊名 | ASTRONOMY & ASTROPHYSICS
 |
| 出版日期 | 2025-10-06 |
| 卷号 | 702页码:10 |
| 关键词 | open clusters and associations: general |
| ISSN号 | 0004-6361 |
| DOI | 10.1051/0004-6361/202556299 |
| 通讯作者 | Zhang, Yu(zhangyu@xao.ac.cn) ; Zhong, Jing(jzhong@shao.ac.cn) |
| 英文摘要 | Context. Binary clusters (BCs) provide valuable observational constraints on the formation, early evolution, and dynamical interactions of star clusters. Their spatial and kinematic associations offer unique insights into the hierarchical star formation process and tidal interactions within the Galactic disk. Aims. Our aim was to identify and classify BCs using high-precision astrometric and kinematic data, and to investigate their physical properties, mutual gravitational interactions, and formation rates. Methods. We used a comprehensive star cluster catalog that contains 4084 high-quality clusters. Based on spatial and kinematic proximity, we identified 400 cluster pairs involving 686 unique clusters. These pairs were classified into three types: primordial BCs, systems formed through tidal capture or resonant trapping, and hyperbolic encounter pairs. For each system, we calculated the tidal factor to quantify the strength of mutual tidal interaction. Additionally, we constructed multi-cluster systems by identifying transitive connections among cluster pairs. Results. Among the 400 identified cluster pairs, nearly 60.8% (243 pairs) are probably primordial BCs, exhibiting similar ages and motions. This supports a scenario where they formed together in the same giant molecular cloud. We find that 82.5% of the cluster pairs have strong mutual tidal forces. In addition, 278 star clusters are identified as members of 82 multi-cluster systems, including 27 newly reported groups. Cross-matching with the literature confirmed the recovery of previously reported systems and led to the discovery of 268 new cluster pairs. In our sample, about 16.8% of the star clusters are involved in some type of interaction with another cluster, and 9.94% of star clusters were likely born in primordial BCs. Conclusions. Our results provide a comprehensive homogeneously identified sample of Galactic BCs. The high fraction of primordial BCs and their mutual tidal interaction suggest that cluster formation in pairs is a main outcome of star formation. This work offers new observational constraints on the formation and dynamical evolution of multiple star cluster systems. |
| WOS关键词 | STAR-CLUSTERS ; ASTROPY ; TRACKS ; II. |
| 资助项目 | Chinese Academy of Sciences (CAS) Light of West China Program[2022-XBQNXZ-013] ; Chinese Academy of Sciences (CAS) Light of West China Program[ZYYD2025QY27] ; Central Guidance for Local Science and Technology Development Fund[2022D01E86] ; Natural Science Foundation of Xinjiang Uygur Autonomous Region[12090040] ; Natural Science Foundation of Xinjiang Uygur Autonomous Region[12090042] ; National Natural Science Foundation of China (NSFC)[CMS-CSST-2025-A19] ; China Manned Space Project ; Youth Innovation Promotion Association CAS[22dz1202400] ; Science and Technology Commission of Shanghai Municipality ; Program of Shanghai Academic/Technology Research Leader[202304910547] ; Program of Shanghai Academic/Technology Research Leader[202404910435] ; China Scholarship Council |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001588901100003 |
| 出版者 | EDP SCIENCES S A |
| 资助机构 | Chinese Academy of Sciences (CAS) Light of West China Program ; Chinese Academy of Sciences (CAS) Light of West China Program ; Central Guidance for Local Science and Technology Development Fund ; Natural Science Foundation of Xinjiang Uygur Autonomous Region ; National Natural Science Foundation of China (NSFC) ; China Manned Space Project ; Youth Innovation Promotion Association CAS ; Science and Technology Commission of Shanghai Municipality ; Program of Shanghai Academic/Technology Research Leader ; China Scholarship Council |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/8226]  |
| 专题 | 研究单元未命名 |
| 通讯作者 | Zhang, Yu; Zhong, Jing |
| 作者单位 | 1.Chinese Acad Sci, XinJiang Astron Observ, 150 Sci 1-St, Urumqi 830011, Xinjiang, Peoples R China 2.Univ Chinese Acad Sci, Sch Astron & Space Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China 3.Univ Barcelona ICCUB, Inst Ciencies Cosmos, Marti i Franques 1, Barcelona 08028, Spain 4.Chinese Acad Sci, Astrophys Div, Shanghai Astron Observ, 80 Nandan Rd, Shanghai 200030, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Guimei,Zhang, Yu,Zhong, Jing,et al. Binary clusters in the Galactic I: systematic identification and classification using Gaia DR3[J]. ASTRONOMY & ASTROPHYSICS,2025,702:10. |
| APA | Liu, Guimei,Zhang, Yu,Zhong, Jing,Qin, Songmei,Jiang, Yueyue,&Chen, Li.(2025).Binary clusters in the Galactic I: systematic identification and classification using Gaia DR3.ASTRONOMY & ASTROPHYSICS,702,10. |
| MLA | Liu, Guimei,et al."Binary clusters in the Galactic I: systematic identification and classification using Gaia DR3".ASTRONOMY & ASTROPHYSICS 702(2025):10. |
入库方式： OAI收割
来源：新疆天文台
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。