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

Published 2019-12-18Version 1

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.