论文标题
银河系圆盘中的锂演化:使用大型恒星样品的视图
Lithium evolution in the Milky Way discs: the view using large stellar samples
论文作者
论文摘要
从观察的角度来看,这项贡献概述了银河薄和厚的圆盘恒星中液丰度的演变。重点是最近的项目和调查获得的LI丰度。为了分离薄和厚的圆盘星,可以使用化学丰度,运动学和年龄。对于厚的圆盘恒星,LI进化是不确定的,因为差异取决于恒星的分离方式。然而,很明显,李的大部分银河富集都发生在薄碟中。文献共识似乎也存在于高于太阳能的金属性的恒星丰度下降。在尝试理解LI观察时应牢记的一些不确定性中进行了简短的讨论。这篇评论结束了列出有关银河碟星的两个有趣的开放问题。
This contribution presents an overview of the evolution of Li abundances in stars of the Galactic thin and thick discs, from the observational point of view. The focus is on Li abundances obtained by recent projects and surveys. To separate thin and thick disc stars, both chemical abundances, kinematics, and ages can be used. For thick disc stars, the Li evolution is uncertain, as differences appear depending on how the stars were separated. Nevertheless, it seems clear that most of the Galactic enrichment in Li takes place in the thin disc. Literature consensus also seems to exist regarding the decrease in the Li abundances of stars with metallicity above solar. A brief discussion is included on some of the uncertainties that should be kept in mind when trying to understand the Li observations. This review ends listing two interesting open questions regarding Li abundances in Milky Way disc stars.