Identifying Li-rich giants from low-resolution spectroscopic survey
文献类型：期刊论文
| 作者 | Kumar, Yerra Bharat1; Reddy, Bacham Eswar2; Zhao, Gang1 |
| 刊名 | JOURNAL OF ASTROPHYSICS AND ASTRONOMY
 |
| 出版日期 | 2018-04-01 |
| 卷号 | 39期号:2页码:10 |
| 关键词 | Stars RGB abundances lithium rich stellar atmospheres spectroscopy |
| ISSN号 | 0250-6335 |
| DOI | 10.1007/s12036-017-9501-6 |
| 英文摘要 | In this paper we discuss our choice of a large unbiased sample used for the survey of red giant branch stars for finding Li-rich K giants, and the method used for identifying Li-rich candidates using low-resolution spectra. The sample has 2000 giants within a mass range of 0.8 to 3.0M(circle dot). Sample stars were selected from the Hipparcos catalogue with colour (B-V) and luminosity (L/L-circle dot) in such way that the sample covers RGB evolution from its base towards RGB tip passing through first dredge-up and luminosity bump. Low-resolution (R approximate to 2000, 3500, 5000) spectra were obtained for all sample stars. Using core strength ratios of lines at Li I 6707 angstrom and its adjacent line Ca I 6717 angstrom we successfully identified 15 K giants with A(Li) > 1.5 dex, which are defined as Li-rich K giants. The results demonstrate the usefulness of low-resolution spectra to measure Li abundance and identify Li-rich giants from a large sample of stars in relatively shorter time periods. |
| WOS关键词 | K-GIANT ; LITHIUM ENRICHMENT ; IRAS COLORS ; STARS ; ABUNDANCES ; RGB |
| 资助项目 | Chinese Academy of Sciences ; National Natural Science Foundation of China[11550110492] ; National Natural Science Foundation of China[11390371] ; National Natural Science Foundation of China[11233004] |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000428683200008 |
| 出版者 | INDIAN ACAD SCIENCES |
| 资助机构 | Chinese Academy of Sciences ; Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/37121]  |
| 专题 | 中国科学院国家天文台 |
| 通讯作者 | Kumar, Yerra Bharat |
| 作者单位 | 1.Chinese Acad Sci, Natl Astron Observ, Key Lab Opt Astron, Beijing 100012, Peoples R China 2.Indian Inst Astrophys, Koramangala 560034, Bengaluru, India |
| 推荐引用方式 GB/T 7714 | Kumar, Yerra Bharat,Reddy, Bacham Eswar,Zhao, Gang. Identifying Li-rich giants from low-resolution spectroscopic survey[J]. JOURNAL OF ASTROPHYSICS AND ASTRONOMY,2018,39(2):10. |
| APA | Kumar, Yerra Bharat,Reddy, Bacham Eswar,&Zhao, Gang.(2018).Identifying Li-rich giants from low-resolution spectroscopic survey.JOURNAL OF ASTROPHYSICS AND ASTRONOMY,39(2),10. |
| MLA | Kumar, Yerra Bharat,et al."Identifying Li-rich giants from low-resolution spectroscopic survey".JOURNAL OF ASTROPHYSICS AND ASTRONOMY 39.2(2018):10. |
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来源：国家天文台
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