The origins of neutron-capture elements in globular cluster M22
IntroductionThe chemical abundances of metal poor (MP) stars in globular clusters provide valuable information for constraining their evolutionary scenarios.MethodsUsing both main r-process and weak r-process patterns, we fit the abundances of s-poor stars in the globular cluster M22.Results and dis...
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Frontiers Media S.A.
2025-08-01
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| Series: | Frontiers in Astronomy and Space Sciences |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fspas.2025.1663125/full |
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| author | Muhammad Zeshan Ashraf Wenyuan Cui Hongjie Li |
| author_facet | Muhammad Zeshan Ashraf Wenyuan Cui Hongjie Li |
| author_sort | Muhammad Zeshan Ashraf |
| collection | DOAJ |
| description | IntroductionThe chemical abundances of metal poor (MP) stars in globular clusters provide valuable information for constraining their evolutionary scenarios.MethodsUsing both main r-process and weak r-process patterns, we fit the abundances of s-poor stars in the globular cluster M22.Results and discussionThe coefficients of the main and weak r-process components are nearly constant for the sample stars, including s-rich stars. By considering the contribution of the s-process from low-mass AGB stars, the abundances of s-rich stars in M22 can also be fitted effectively. Furthermore, the increasing trend in the s-process component coefficients (Cs) with increasing [Fe/H] suggests a gradual increase in the contribution from low-mass AGB stars. |
| format | Article |
| id | doaj-art-7a8f0e0bfb714babb617bf0b1d1058d3 |
| institution | Kabale University |
| issn | 2296-987X |
| language | English |
| publishDate | 2025-08-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Astronomy and Space Sciences |
| spelling | doaj-art-7a8f0e0bfb714babb617bf0b1d1058d32025-08-26T04:12:48ZengFrontiers Media S.A.Frontiers in Astronomy and Space Sciences2296-987X2025-08-011210.3389/fspas.2025.16631251663125The origins of neutron-capture elements in globular cluster M22Muhammad Zeshan Ashraf0Wenyuan Cui1Hongjie Li2College of Physics, Hebei Normal University, Shijiazhuang, ChinaCollege of Physics, Hebei Normal University, Shijiazhuang, ChinaCollege of Sciences, Hebei University of Science and Technology, Shijiazhuang, ChinaIntroductionThe chemical abundances of metal poor (MP) stars in globular clusters provide valuable information for constraining their evolutionary scenarios.MethodsUsing both main r-process and weak r-process patterns, we fit the abundances of s-poor stars in the globular cluster M22.Results and discussionThe coefficients of the main and weak r-process components are nearly constant for the sample stars, including s-rich stars. By considering the contribution of the s-process from low-mass AGB stars, the abundances of s-rich stars in M22 can also be fitted effectively. Furthermore, the increasing trend in the s-process component coefficients (Cs) with increasing [Fe/H] suggests a gradual increase in the contribution from low-mass AGB stars.https://www.frontiersin.org/articles/10.3389/fspas.2025.1663125/fullnucleosynthesismetal poor starsmain s-processmain r-processweak r-process |
| spellingShingle | Muhammad Zeshan Ashraf Wenyuan Cui Hongjie Li The origins of neutron-capture elements in globular cluster M22 Frontiers in Astronomy and Space Sciences nucleosynthesis metal poor stars main s-process main r-process weak r-process |
| title | The origins of neutron-capture elements in globular cluster M22 |
| title_full | The origins of neutron-capture elements in globular cluster M22 |
| title_fullStr | The origins of neutron-capture elements in globular cluster M22 |
| title_full_unstemmed | The origins of neutron-capture elements in globular cluster M22 |
| title_short | The origins of neutron-capture elements in globular cluster M22 |
| title_sort | origins of neutron capture elements in globular cluster m22 |
| topic | nucleosynthesis metal poor stars main s-process main r-process weak r-process |
| url | https://www.frontiersin.org/articles/10.3389/fspas.2025.1663125/full |
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