Red clump stars from the LAMOST data I: identification and distance
文献类型：期刊论文
| 作者 | Wan, Jun-Chen1 ; Liu, Chao1; Deng, Li-Cai1; Cui, Wen-Yuan2; Zhang, Yong3; Hou, Yong-Hui3; Yang, Ming1; Wu, Yue1; Liu Chao; Wan Junchen
|
| 刊名 | RESEARCH IN ASTRONOMY AND ASTROPHYSICS
 |
| 出版日期 | 2015-08-01 |
| 卷号 | 15期号:8页码:1166-1181 |
| 关键词 | stars: general stars: horizontal-branch stars: statistics stars: distances Galaxy: stellar content |
| 英文摘要 | We present a sample of about 120 000 red clump candidates selected from the LAMOST DR2 catalog based on the empirical distribution model in the effective temperature vs. surface gravity plane. Although, in general, red clump stars are considered as standard candles, they do not exactly stay in a narrow range of absolute magnitude, but may have a range of more than one magnitude depending on their initial mass. Consequently, conventional oversimplified distance estimations with the assumption of a fixed luminosity may lead to systematic bias related to the initial mass or age, which can potentially affect the study of the evolution of the Galaxy with red clump stars. We therefore employ an isochrone-based method to estimate the absolute magnitude of red clump stars from their observed surface gravities, effective temperatures and metallicities. We verify that the estimation removes the systematics well and provides initial mass/age estimates that are independent of distance with accuracy better than 10%. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000360553400006 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/5619]  |
| 专题 | 国家天文台_光学天文研究部 |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Opt Astron, Natl Astron Observ, Beijing 100012, Peoples R China 2.Hebei Normal Univ, Dept Phys, Shijiazhuang 050024, Peoples R China 3.Chinese Acad Sci, Nanjing Inst Astron Opt & Technol, Natl Astron Observ, Nanjing 210042, Jiangsu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wan, Jun-Chen,Liu, Chao,Deng, Li-Cai,et al. Red clump stars from the LAMOST data I: identification and distance[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2015,15(8):1166-1181. |
| APA | Wan, Jun-Chen.,Liu, Chao.,Deng, Li-Cai.,Cui, Wen-Yuan.,Zhang, Yong.,...&Deng Licai.(2015).Red clump stars from the LAMOST data I: identification and distance.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,15(8),1166-1181. |
| MLA | Wan, Jun-Chen,et al."Red clump stars from the LAMOST data I: identification and distance".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 15.8(2015):1166-1181. |
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。