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arXiv · 1912.08431

Lithium-rich Giants in LAMOST Survey. I. The Catalog

Qi Gao·Jian-Rong Shi·Hong-Liang Yan·Tai-Sheng Yan·Mao-Sheng Xiang·Yu-Tao Zhou·Chun-Qian Li·Gang Zhao
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Abstract

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 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.

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Qi Gao, Jian-Rong Shi, Hong-Liang Yan, Tai-Sheng Yan, Mao-Sheng Xiang, Yu-Tao Zhou, Chun-Qian Li, Gang Zhao. 2019-12-18. Lithium-rich Giants in LAMOST Survey. I. The Catalog. https://doi.org/10.3847/1538-4365%2Fab505c

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