The Origins of Neutron-capture Elements In Globular Cluster M22
Fuente:
arXiv
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| Autori principali: | , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866909802131619840 |
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| author | Ashraf, Muhammad Zeshan Cui, Wenyuan Li, Hongjie |
| author_facet | Ashraf, Muhammad Zeshan Cui, Wenyuan Li, Hongjie |
| contents | The chemical abundances of metal-poor stars in globular clusters provide important constraints on their evolutionary scenarios. Using both main r-process and weak r-process patterns, we fit the abundances of s-poor stars in the globular cluster M22. The coefficients of the main and weak r-process components are nearly constant for the sample stars, including s-rich stars. By accounting for the contribution of the s-process from low-mass asymptotic giant branch stars, the abundances of s-rich stars in M22 can also be fitted effectively. In addition, the increasing trend in the s-process component coefficients with rising [Fe/H] indicates a gradual increase in the contribution from low-mass asymptotic giant branch stars. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2509_18650 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | The Origins of Neutron-capture Elements In Globular Cluster M22 Ashraf, Muhammad Zeshan Cui, Wenyuan Li, Hongjie Solar and Stellar Astrophysics Astrophysics of Galaxies The chemical abundances of metal-poor stars in globular clusters provide important constraints on their evolutionary scenarios. Using both main r-process and weak r-process patterns, we fit the abundances of s-poor stars in the globular cluster M22. The coefficients of the main and weak r-process components are nearly constant for the sample stars, including s-rich stars. By accounting for the contribution of the s-process from low-mass asymptotic giant branch stars, the abundances of s-rich stars in M22 can also be fitted effectively. In addition, the increasing trend in the s-process component coefficients with rising [Fe/H] indicates a gradual increase in the contribution from low-mass asymptotic giant branch stars. |
| title | The Origins of Neutron-capture Elements In Globular Cluster M22 |
| topic | Solar and Stellar Astrophysics Astrophysics of Galaxies |
| url | https://arxiv.org/abs/2509.18650 |