Institutional Repository of Optical Astronomy Research Laboratory
| Diagnosing the Stellar Population and Tidal Structure of the Blanco 1 Star Cluster | |
Zhang, Yu1 ; Tang, Shih-Yun2; Chen, W. P.2,3; Pang, Xiaoying4,5; Liu, J. Z.1
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| 2020-02-01 | |
| Source Publication | Astrophysical Journal
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| ISSN | 0004-637X |
| Volume | 889Issue:2Pages:99 |
| Contribution Rank | 1 |
| Abstract | 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. |
| Keyword | Stellar evolution Stellar mass functions Open star clusters PARSEC EVOLUTIONARY TRACKS PROPER-MOTION MASS SEGREGATION DWARF PHOTOMETRY PLEIADES SPECTROSCOPY PALOMAR-5 ROTATION MODELS |
| Subtype | Article |
| DOI | 10.3847/1538-4357/ab63d4 |
| URL | 查看原文 |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000520184200001 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.xao.ac.cn/handle/45760611-7/4068 |
| Collection | 光学天文与技术应用研究室 |
| Affiliation | 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 |
| First Author Affilication | Xinjiang Astronomical Observatory, Chinese Academy of Sciences |
| Recommended Citation 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. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| Zhang-2020-Diagnosin（6296KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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