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Hope and Inquietudes in Nucleo-cosmochronology

M. Arnould·S. Goriely
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Abstract

Critical views are presented on some nucleo-cosmochronological questions. Progress has been made recently in the development of the 187Re-187Os cosmochronometry. From this, there is good hope for this clock to become of the highest quality for the nuclear dating of the Universe. The simultaneous observation of Th and U in ultra-metal-poor stars would also be a most interesting prospect. In contrast, a serious inquietude is expressed about the reliability of the chronometric attempts based on the classical 232Th-238U and 235U-238U pairs, as well as on the Th (without U) abundance determinations in ultra-metal poor stars.

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M. Arnould, S. Goriely. 2001-04-23. Hope and Inquietudes in Nucleo-cosmochronology. https://arxiv.org/abs/astro-ph/0104359

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