论文标题

年轻星星的锂旋转连接

The lithium-rotation connection in young stars

论文作者

Bouvier, J.

论文摘要

锂是对在恒星内部运行的混合过程的敏感探针。多年来,怀疑锂丰度和恒星旋转之间存在联系,这可能是旋转引起的内部混合的结果。近年来,一些研究证实并完善了低质量年轻恒星的这种关系。在各种恒星形成区域和年轻的开放群集中,与旋转较慢的兄弟姐妹相比,迅速旋转的k矮人矮矮矮。尽管这种锂旋转相关性与天真的期望背道而驰,但已经提出了几种模型来考虑它。我们在这里回顾了最新的观察结果,并简要讨论了提出的解释。

Lithium is a sensitive probe to mixing processes operating in stellar interiors. For many years, a connection has been suspected to exist between lithium abundances and stellar rotation, presumably the result of rotationally-induced internal mixing. In recent years, several studies have confirmed and refined this relationship for low-mass young stars. In various star forming regions and young open clusters, rapidly rotating K dwarfs are found to be lithium-rich compared to their more slowly rotating siblings. While this lithium-rotation correlation is contrary to naive expectations, several models have been put forward to account for it. We review here recent observational results, and briefly discuss proposed interpretations.

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