Correlation between U/Th and Pb/Os abundance ratios and its application in nuclear cosmochronology
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arXiv
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| Hauptverfasser: | , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866912478035705856 |
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| author | Huang, Y. Y. Cui, Q. Q. Wu, X. H. Zhang, S. Q. |
| author_facet | Huang, Y. Y. Cui, Q. Q. Wu, X. H. Zhang, S. Q. |
| contents | The abundance ratios of radioactive elements U/Th and stable elements Pb/Os from the $r$-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 $r$-process enhanced metal-poor stars respectively. Ages of these six metal-poor stars are predicted by the U/Th chronometer, which are approximately between $11$ and $15$ Gyr. Their ages are compatible with the cosmic age of 13.8 billion years predicted from the cosmic microwave background radiation. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2505_13269 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Correlation between U/Th and Pb/Os abundance ratios and its application in nuclear cosmochronology Huang, Y. Y. Cui, Q. Q. Wu, X. H. Zhang, S. Q. Nuclear Theory Solar and Stellar Astrophysics The abundance ratios of radioactive elements U/Th and stable elements Pb/Os from the $r$-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 $r$-process enhanced metal-poor stars respectively. Ages of these six metal-poor stars are predicted by the U/Th chronometer, which are approximately between $11$ and $15$ Gyr. Their ages are compatible with the cosmic age of 13.8 billion years predicted from the cosmic microwave background radiation. |
| title | Correlation between U/Th and Pb/Os abundance ratios and its application in nuclear cosmochronology |
| topic | Nuclear Theory Solar and Stellar Astrophysics |
| url | https://arxiv.org/abs/2505.13269 |