Correlation between U/Th and Pb/Os abundance ratios and its application in nuclear cosmochronology
Nuclear Theory
2025-07-15 v2 Solar and Stellar Astrophysics
Abstract
The abundance ratios of radioactive elements U/Th and stable elements Pb/Os from the -process are found to have a strong correlation. This correlation is quite robust with respect to astrophysical conditions. The U/Th-Pb/Os correlation is then applied to provide customized initial abundance ratios U/Th from the observed abundance ratios Pb/Os for six -process enhanced metal-poor stars respectively. Ages of these six metal-poor stars are predicted by the U/Th chronometer, which are approximately between and Gyr. Their ages are compatible with the cosmic age of 13.8 billion years predicted from the cosmic microwave background radiation.
Cite
@article{arxiv.2505.13269,
title = {Correlation between U/Th and Pb/Os abundance ratios and its application in nuclear cosmochronology},
author = {Y. Y. Huang and Q. Q. Cui and X. H. Wu and S. Q. Zhang},
journal= {arXiv preprint arXiv:2505.13269},
year = {2025}
}
Comments
9 pages, 5 figures