论文标题
原恒星积聚和宇宙锂问题
Protostellar accretion and the cosmological lithium problem
论文作者
论文摘要
宇宙学的锂问题，即大爆炸核合成所预测的锂丰度与“ Spite Plateau”恒星观察到的锂丰度之间的差异是现代天体物理学的长期存在的问题之一。一种可能的天体物理解决方案涉及在高原恒星上的原始质量积聚引起的锂燃烧。在目前的工作中，我们首次使用准确的进化计算研究了积聚对金属贫困状态中锂演化的影响，这与Spite Plateau中的恒星有关。
The cosmological lithium problem, i.e. the discrepancy between the lithium abundance predicted by the Big Bang Nucleosynthesis and the one observed for the stars of the "Spite plateau", is one of the long standing problems of modern astrophysics. A possible astrophysical solution involves lithium burning due to protostellar mass accretion on Spite plateau stars. In present work, for the first time, we investigate with accurate evolutionary computations the impact of accretion on the lithium evolution in the metal-poor regime, that relevant for stars in the Spite plateau.
