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arXiv 1308.6325astro-ph.EP
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早期太阳系中的26 Al:毕竟不是那么不寻常

26Al in the Early Solar System: Not so Unusual After All

M. Jura, S. Xu, E. D. Young

摘要:

最近获得的证据表明,太阳系外小行星的铁与铝丰度比的变化超过100倍。这个大的范围可能是火成分异的结果,这是由于26铝的放射性衰变产生的热量,其丰度与太阳系的原行星盘在诞生时的丰度相当。如果是这样的话,我们的太阳系从异常高的铝26开始的传统观点应该被抛弃。

英文摘要:

Recently acquired evidence shows that extrasolar asteroids exhibit over a factor of 100 variation in the iron to aluminum abundance ratio. This large range likely is a consequence of igneous differentiation that resulted from heating produced by radioactive decay of 26Al with an abundance comparable to that in the solar system's protoplanetary disk at birth. If so, the conventional view that our solar system began with an unusually high amount of 26Al should be discarded.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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