Stellar Chromospheric Activity and Age Relation from Open Clusters in the LAMOST Survey
文献类型：期刊论文
| 作者 | Zhang,Jiajun5,6; Zhao,Jingkun6 ; Oswalt,Terry D.4; Fang,Xiangsong2,3; Zhao,Gang5,6; Liang,Xilong5,6; Ye,Xianhao5,6; Zhong,Jing1
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| 刊名 | The Astrophysical Journal
 |
| 出版日期 | 2019-12-10 |
| 卷号 | 887期号:1 |
| 关键词 | Stellar activity Stellar ages Open star clusters |
| ISSN号 | 0004-637X |
| DOI | 10.3847/1538-4357/ab4efe |
| 英文摘要 | Abstract We identify member stars of more than 90 open clusters in the LAMOST survey. With the method of Fang et al., the chromospheric activity (CA) indices, for 1091 member stars in 82 open clusters and for 1118 member stars in 83 open clusters, are calculated. The relations between the average , in each open cluster and its age are investigated in different Teff and [Fe/H] ranges. We find that CA starts to decrease slowly from log t?=?6.70 to log t?=?8.50, and then decreases rapidly until log t?=?9.53. The trend becomes clearer for cooler stars. The quadratic functions between log R′ and log t with 4000 K ? |
| 语种 | 英语 |
| WOS记录号 | IOP:0004-637X-887-1-AB4EFE |
| 出版者 | The American Astronomical Society |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/28664]  |
| 专题 | 中国科学院国家天文台 |
| 作者单位 | 1.Key Laboratory for Research in Galaxies and Cosmology, Shanghai Astronomical Observatory, Chinese Academy of Sciences, 80 Nandan Road, Shanghai 200030, People's Republic of China 2.Instituto de Astronomía, Universidad Católica del Norte, Av. Angamos 0610, Antofagasta, Chile 3.Chinese Academy of Sciences South America Center for Astronomy, National Astronomical Observatories, CAS, Beijing 100101, People's Republic of China 4.Embry-Riddle Aeronautical University, 600 S. Clyde Morris Boulevard, Daytona Beach, FL 32114, USA; oswaltt1@erau.edu 5.School of Astronomy and Space Science, University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China 6.Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, People's Republic of China zjk@nao.cas.cn, zjk@bao.ac.cn |
| 推荐引用方式 GB/T 7714 | Zhang,Jiajun,Zhao,Jingkun,Oswalt,Terry D.,et al. Stellar Chromospheric Activity and Age Relation from Open Clusters in the LAMOST Survey[J]. The Astrophysical Journal,2019,887(1). |
| APA | Zhang,Jiajun.,Zhao,Jingkun.,Oswalt,Terry D..,Fang,Xiangsong.,Zhao,Gang.,...&Zhong,Jing.(2019).Stellar Chromospheric Activity and Age Relation from Open Clusters in the LAMOST Survey.The Astrophysical Journal,887(1). |
| MLA | Zhang,Jiajun,et al."Stellar Chromospheric Activity and Age Relation from Open Clusters in the LAMOST Survey".The Astrophysical Journal 887.1(2019). |
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来源：国家天文台
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