期刊
ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
卷 245, 期 2, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.3847/1538-4365/ab505c
关键词
-
资金
- Key Research Program of the Chinese Academy of Sciences [XDPB09-02]
- National Natural Science Foundation of China [11833006, 11603037, 11473033, 11973052]
- International partnership program's Key foreign cooperation project [114A32KYSB20160049]
- Bureau of International Cooperation, Chinese Academy of Sciences
- Youth Innovation Promotion Association, CAS
- Astronomical Big Data Joint Research Center
- National Development and Reform Commission
Standard stellar evolution model predicts a severe depletion of lithium (Li) abundance during the first dredge up process (FDU). Yet a small fraction of giant stars are still found to preserve a considerable amount of Li in their atmospheres after the FDU. Those giants are usually identified as Li-rich by a widely used criterion, A(Li) > 1.5 dex. A large number of works dedicated to searching for and investigating this minority of the giant family, and the amount of Li-rich giants, has been largely expanded on, especially in the era of big data. In this paper, we present a catalog of Li-rich giants found from the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) survey with Li abundances derived from a template-matching method developed for LAMOST low-resolution spectra. The catalog contains 10,535 Li-rich giants with Li abundances from similar to 1.5 to similar to 4.9 dex. We also confirm that the ratio of Li-rich phenomenon among giant stars is about 1%-or more specifically, 1.29%-from our statistically important sample. This is the largest Li-rich giant sample ever reported to date, which significantly exceeds amount of all reported Li-rich giants combined. The catalog will help the community to better understand the Li-rich phenomenon in giant stars.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据