六里高原的神秘起源
The puzzling origin of the 6Li plateau
摘要：
我们讨论了6Li丰度演化的星系形成的层次模型，它正确地再现了贫金属晕星的[Fe/H]分布。与先前的发现相反，我们发现，无论是（6Li/H = 6x10 ^-12）水平还是6Li分布的平坦性（[Fe/H]）都不能在最有利的条件下通过任何模型重现，在该模型中，6Li的产生与通过宇宙射线散射的（数据约束的）银河系恒星形成速率有关。因此，高原的起源可能是由于其他一些与恒星形成无关的早期机制。
英文摘要：
We discuss the 6Li abundance evolution within a hierarchical model of Galaxy formation which correctly reproduces the [Fe/H] distribution of metal-poor halo stars. Contrary to previous findings, we find that neither the level (6Li/H=6x10^-12) nor the flatness of the 6Li distribution with [Fe/H] can be reproduced under the most favourable conditions by any model in which 6Li production is tied to a (data-constrained) Galactic star formation rate via cosmic ray spallation. Thus, the origin of the plateau might be due to some other early mechanism unrelated to star formation.
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