Unveiling the binary nature of NGC 2323
文献类型：期刊论文
| 作者 | Qin, Songmei8,9,10; Zhong, Jing8; Tang, Tong8,9; Jiang, Yueyue8,9; Wang, Long3,4; Wu, Kai5; Anders, Friedrich6,7,10; Balaguer-Nunez, Lola6,7,10; Liu, Guimei1,9; Li, Chunyan2
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| 刊名 | ASTRONOMY & ASTROPHYSICS
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| 出版日期 | 2025-01-29 |
| 卷号 | 693页码:A317 |
| 关键词 | open clusters and associations: general open clusters and associations: individual: NGC 2323 |
| ISSN号 | 0004-6361 |
| DOI | 10.1051/0004-6361/202452962 |
| 产权排序 | 9 |
| 英文摘要 | Context. As a well-known open cluster, NGC 2323 (also called M50) has been widely investigated for over a hundred years and has always been considered a classical single cluster. Aims. We studied the binary structure nature of NGC 2323 with Gaia Data Release 3 (DR3). Methods. We discovered the binary structure of NGC 2323 by the HDBSCAN algorithm based on the astrometric and photometric data from Gaia DR3. Then we employed the PETAR N-body code to investigate its binary structure origin. Results. We found that NGC 2323 consists of two distinct subclusters (NGC 2323-a and NGC 2323-b) that are still gravitationally bound. They have very close positions (three-dimensional Delta pos = 12.3 pc, sigma(Delta pos) = 3.4 pc) and similar tangential velocities (two-dimensional Delta V = 2.2 km s(-1), sigma(Delta V) = 0.02 km s(-1)). The best isochrone fitting ages of the two clusters are the same (158 Myr), further proving their possibly common origin. The numerical N-body simulation suggests that the less massive cluster is unlikely to be the cluster tidal tails created by the differential rotation of the Milky Way. |
| WOS关键词 | OPEN STAR-CLUSTERS ; PRIMORDIAL GROUP ; STELLAR MASS ; TIDAL TAILS ; DISCOVERY ; EVOLUTION ; ASTROPY ; II. ; VALIDATION ; PHOTOMETRY |
| 资助项目 | National Natural Science Foundation of China (NSFC)[21BAA00619] ; National Natural Science Foundation of China (NSFC)[12073090] ; National Natural Science Foundation of China (NSFC)[12233013] ; Youth Innovation Promotion Association CAS ; China Manned Space Project ; Science and Technology Commission of Shanghai Municipality ; Program of Shanghai Academic/Technology Research Leader ; Sun Yat-sen University ; Fundamental Research Funds for the Central Universities, Sun Yat-sen University[22hytd09] ; DFG ; China Scholarship Council ; MCIN/AEI ; Spanish MICIN/AEI ; European Union NextGenerationEU/PRTR[PID2021-122842OB-C21] ; ERDF A way of making Europe by the European Union ; Institute of Cosmos Sciences University of Barcelona (ICCUB, Unidad de Excelencia 'Maria de Maeztu')[CEX2019-000918-M] ; [12090040] ; [12090042] ; [12073060] ; [CMS-CSST-2021-A08] ; [22dz1202400] ; [Sp 345/24-1] ; [202304910547] ; [RYC2021-031638-I] |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001410150100004 |
| 出版者 | EDP SCIENCES S A |
| 资助机构 | National Natural Science Foundation of China (NSFC) ; Youth Innovation Promotion Association CAS ; China Manned Space Project ; Science and Technology Commission of Shanghai Municipality ; Program of Shanghai Academic/Technology Research Leader ; Sun Yat-sen University ; Fundamental Research Funds for the Central Universities, Sun Yat-sen University ; DFG ; China Scholarship Council ; MCIN/AEI ; Spanish MICIN/AEI ; European Union NextGenerationEU/PRTR ; ERDF A way of making Europe by the European Union ; Institute of Cosmos Sciences University of Barcelona (ICCUB, Unidad de Excelencia 'Maria de Maeztu') |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/7411]  |
| 专题 | 研究单元未命名 |
| 通讯作者 | Qin, Songmei; Zhong, Jing |
| 作者单位 | 1.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China 2.China West Normal Univ, Sch Phys & Astron, 1 Shida Rd, Nanchong 637002, Peoples R China 3.Sun Yat Sen Univ, Sch Phys & Astron, Daxue Rd, Zhuhai 519082, Peoples R China 4.Guangdong Hong Kong Macau Greater Bay Area, CSST Sci Ctr, Hong Kong 519082, Peoples R China 5.Zentrum Astron Univ Heidelberg, Astron Rechen Inst, Monchhofstr 12-14, D-69120 Heidelberg, Germany 6.Univ Barcelona UB, Dept Fis Quant & Astrofis FQA, C Marti i Franques 1, Barcelona 08028, Spain 7.Inst Estudis Espacials Catalunya IEEC, Edif RDIT, Campus UPC, Castelldefels 08860, Barcelona, Spain 8.Chinese Acad Sci, Shanghai Astron Observ, Astrophys Div, 80 Nandan Rd, Shanghai 200030, Peoples R China 9.Univ Chinese Acad Sci, Sch Astron & Space Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China 10.Univ Barcelona ICCUB, Inst Ciencies Cosmos, Marti i Franques 1, Barcelona 08028, Spain |
| 推荐引用方式 GB/T 7714 | Qin, Songmei,Zhong, Jing,Tang, Tong,et al. Unveiling the binary nature of NGC 2323[J]. ASTRONOMY & ASTROPHYSICS,2025,693:A317. |
| APA | Qin, Songmei.,Zhong, Jing.,Tang, Tong.,Jiang, Yueyue.,Wang, Long.,...&Chen, Li.(2025).Unveiling the binary nature of NGC 2323.ASTRONOMY & ASTROPHYSICS,693,A317. |
| MLA | Qin, Songmei,et al."Unveiling the binary nature of NGC 2323".ASTRONOMY & ASTROPHYSICS 693(2025):A317. |
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来源：新疆天文台
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