Diagnosing Open Cluster Stock 2: Member Candidates and Mass Distribution with Gaia DR2 and LAMOST
文献类型：期刊论文
| 作者 | Ye,Xianhao1,3; Zhao,Jingkun3 ; Liu,Jiaming3; Bird,Sarah A.3; Liu,Chao1,2; Liang,Xilong1,3; Zhang,Jiajun1,3; Zhao,Gang1,3
|
| 刊名 | The Astronomical Journal
 |
| 出版日期 | 2020-12-02 |
| 卷号 | 161期号:1 |
| 关键词 | Open star clusters |
| ISSN号 | 0004-6256 |
| DOI | 10.3847/1538-3881/abc61a |
| 英文摘要 | Abstract We identify 1325 member candidates of the open cluster (OC) Stock 2 using data from Gaia DR2. We use the algorithms Clusterix 2.0 and HDBSCAN to select cluster candidates and further refine the final cluster membership by defining neighbors in 5D phase space (X cp,?Y cp, /?,?κ?·?μ δ /?). Among these candidates, less than half have G, G BP, and G RP extinctions from Gaia. When Gaia extinctions are unavailable, we compute extiction using empirical formulas and E(B???V)?=?0.350. We analyze the spatial distribution and mass profile of Stock 2. Our results reveal Stock 2 is still a bound OC and we find evidence of mass segregation. By comparing initial mass functions, the present-day mass function indicates that Stock 2 is a massive stellar cluster with a mass of 4000 M ⊙. The core radius and tidal radius, calculated via the radial density profile and total mass, are 3.97 pc and 22.65 pc, respectively. Common stars between our selected member candidates and the Large Sky Area Multi-Object Fiber Spectroscopic Telescope DR7 medium-resolution catalog give a metalliclity of [Fe/H]?=??0.040?±?0.147. |
| 语种 | 英语 |
| WOS记录号 | IOP:0004-6256-161-1-ABC61A |
| 出版者 | The American Astronomical Society |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/57722]  |
| 专题 | 中国科学院国家天文台 |
| 作者单位 | 1.School of Astronomy and Space Science, University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China 2.CAS Key Laboratory of Space Astronomy and Technology, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, People's Republic of China 3.CAS Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, People's Republic of China zjk@bao.ac.cn |
| 推荐引用方式 GB/T 7714 | Ye,Xianhao,Zhao,Jingkun,Liu,Jiaming,et al. Diagnosing Open Cluster Stock 2: Member Candidates and Mass Distribution with Gaia DR2 and LAMOST[J]. The Astronomical Journal,2020,161(1). |
| APA | Ye,Xianhao.,Zhao,Jingkun.,Liu,Jiaming.,Bird,Sarah A..,Liu,Chao.,...&Zhao,Gang.(2020).Diagnosing Open Cluster Stock 2: Member Candidates and Mass Distribution with Gaia DR2 and LAMOST.The Astronomical Journal,161(1). |
| MLA | Ye,Xianhao,et al."Diagnosing Open Cluster Stock 2: Member Candidates and Mass Distribution with Gaia DR2 and LAMOST".The Astronomical Journal 161.1(2020). |
入库方式： OAI收割
来源：国家天文台
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。