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astro-ph.SR2025
The Origins of Neutron-capture Elements In Globular Cluster M22
Muhammad Zeshan Ashraf, Wenyuan Cui, Hongjie Li
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 pattern…
astro-ph.SR2025
The Abundance Origin Of A Highly r-process-Enhanced r-II Star: LAMOST J020623.21+494127.9
Muhammad Zeshan Ashraf, Wenyuan Cui, Hongjie Li
Object LAMOST J020623.21+494127.9 (program star) in the thin disk of the Milky Way (MW) is reported as a highly r-process-enhanced (RPE) r-II star with[Eu/Fe]= +1.32 and [Fe/H]= -0…