发布科研成果,普及天文知识1小时前
宇宙大爆炸后20分钟,太空中是什么样貌?看似离奇的问题,一位“目击证人”或许能解答,它就是古老的锂元素,穿越138亿年时空,携带着演化的古老密码,来偶遇我们。
然而,“有性格”的锂元素不喜欢平铺直叙、和盘托出。它更爱打翻预言、留下谜团。所幸有位知音,能听懂锂元素的心声。古老的锂元素、年轻的LAMOST这对忘年交相见恨晚。
大海捞针发现宇宙锂王,找出震撼世界的最大富锂巨星样本,精确刻画恒星晚年锂元素的演化,LAMOST让宇宙寻锂路不再是镜花水月。
时光不停,恒星跳动不止,巡天观测不息。终有一天,神秘面纱会完全揭开,这段还在不断续写的故事,我们不妨先睹为快。
系列成果:
[1] Hong-Liang Yan, Jian-Rong Shi, et al. The nature of the lithiumenrichment in the most Li-rich giant star[J], Nature Astronomy, 2018, 2,790.
[2]Gao Qi ,Shi,Jian-Rong ,Yan,Hong-Liang, et al.Lithium-rich Giants in LAMOST Survey. I. TheCatalog. 2019, ApJS ,245, 33.
[3] Zhou, Yutao, Yan,Hongliang ;Shi,Jianrong et al. High-resolution Spectroscopic Analysis of aLarge Sample of Li-rich Giants Found By LAMOST, 2019,ApJ,877,104.
[4] Hong-LiangYan, Yu-Tao Zhou, Xian-feiZhang, et al. Most lithium-rich low-mass evolved stars revealed asred clump stars by asteroseismology and spectroscopy
, Nature Astronomy 2021,5:86.
[5] Yerra BharatKumar, Gang Zhaoet al. Discovery of ubiquitous lithium production in low-mass stars, Nature Astronomy 2020, 4:1059.
[6]Ze-Ming Zhou,Jian-Rong Shi,Hong-Liang Yan,LAMOST/HRS spectroscopic analysis of two new Li-rich giants,2021,RAA,21,20
[7]Gao Qi ,Shi,Jian-Rong ,Yan,Hong-Liang, et al.The Lithium Abundances from the Large Sky AreaMulti-object Fiber Spectroscopic Telescope Medium-resolution Survey. I. TheMethod,2021, ApJ,914,116.
[8] Jinghua Zhang, Jian-RongShi, Hong-Liang Yan, et al. Lithium Evolution of Giant Stars Observed byLAMOST and Kepler. ApJL,2021, 919, L3.
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