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Diagnosing the Stellar Population and Tidal Structure of the Blanco 1 Star Cluster
文献类型：期刊论文
| 作者 | Zhang, Yu1 ; Tang, Shih-Yun2; Chen, W. P.2,3; Pang, Xiaoying4,5; Liu, J. Z.1
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| 刊名 | Astrophysical Journal
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| 出版日期 | 2020-02-01 |
| 卷号 | 889期号:2页码:99 |
| 关键词 | Stellar evolution Stellar mass functions Open star clusters PARSEC EVOLUTIONARY TRACKS PROPER-MOTION MASS SEGREGATION DWARF PHOTOMETRY PLEIADES SPECTROSCOPY PALOMAR-5 ROTATION MODELS |
| ISSN号 | 0004-637X |
| DOI | 10.3847/1538-4357/ab63d4 |
| 产权排序 | 1 |
| 文献子类 | Article |
| 英文摘要 | We present the stellar population, using Gaia DR2 parallax, kinematics, and photometry, of the young (similar to 100 Myr), nearby (similar to 230 pc) open cluster, Blanco 1. A total of 644 member candidates are identified via the unsupervised machine learning method StarGO to find the clustering in the five-dimensional position and proper motion parameter (X, Y, Z, mu(alpha), cos delta, mu(delta)) space. Within the tidal radius of 10.0 0.3 pc, there are 488 member candidates, 3 times more than those outside. A leading tail and a trailing tail, each of 50-60 pc in the Galactic plane, are found for the first time for this cluster, with stars further from the cluster center streaming away faster, manifest stellar stripping. Blanco 1 has a total detected mass of 285 32 M alpha = 1.35 0.2 in the sense of dN/dm proportional to m(-alpha), in the mass range of 0.25-2.51 M, where N is the number of members and m is stellar mass. A minimum spanning tree (Lambda(MSR)) analysis shows the cluster to be moderately mass segregated among the most massive members (greater than or similar to 1.4 M), suggesting an early stage of dynamical disintegration. |
| URL标识 | 查看原文 |
| 语种 | 英语 |
| WOS记录号 | WOS:000520184200001 |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/4068]  |
| 专题 | 新疆天文台_光学天文与技术应用研究室 |
| 作者单位 | 1.Xinjiang Astronomical Observatory, Chinese Academy of Sciences, People’s Republic of China; 2.Department of Physics, National Central University, 300 Zhongda Road, Zhongli, Taoyuan 32001, Taiwan; 3.Graduate Institute of Astronomy, National Central University, 300 Zhongda Road, Zhongli, Taoyuan 32001, Taiwan; 4.Xi’an Jiaotong-Liverpool University, 111 Ren’ai Road, Dushu Lake Science and Education Innovation District, Suzhou 215123, Jiangsu Province, People’s Republic of China; 5.Shanghai Key Laboratory for Astrophysics, Shanghai Normal University, 100 Guilin Road, Shanghai 200234, People’s Republic of China |
| 推荐引用方式 GB/T 7714 | Zhang, Yu,Tang, Shih-Yun,Chen, W. P.,et al. Diagnosing the Stellar Population and Tidal Structure of the Blanco 1 Star Cluster[J]. Astrophysical Journal,2020,889(2):99. |
| APA | Zhang, Yu,Tang, Shih-Yun,Chen, W. P.,Pang, Xiaoying,&Liu, J. Z..(2020).Diagnosing the Stellar Population and Tidal Structure of the Blanco 1 Star Cluster.Astrophysical Journal,889(2),99. |
| MLA | Zhang, Yu,et al."Diagnosing the Stellar Population and Tidal Structure of the Blanco 1 Star Cluster".Astrophysical Journal 889.2(2020):99. |
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来源：新疆天文台
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