8 papers
Nucleosynthesis of Pop III and Fe-enriched Pop II Pair-Instability Supernovae
Wenyu Xin, Ken'ichi Nomoto, Chun-Ming Yip +4
Recently discovered very metal-poor (VMP) star LAMOST J1010+2358 shows a peculiar abundance pattern that is remarkably well fit by a Pop III pair-instability supernova (PISN) of $\…
The Impact of the New Fe Decay Rates on Fe and Al Nucleosynthesis in Massive Stars
Bingyang Tan, Wenyu Xin, Ruizheng Jiang +2
The diffuse -ray emission from short-lived radioactive Al and Fe provides a direct probe of ongoing nucleosynthesis in the Galaxy. However, theoretical models hav…
Constraints on the CO and O+O Reaction Rates from Binary Black Holes Detected via Gravitational Wave Signals
Wenyu Xin, Xiaokun Hou, Xianfei Zhang +2
Gravitational-wave observations of binary black hole (BH) mergers provide a novel avenue for testing massive-star evolution and the resulting BH mass spectrum. Recent population an…
The impact of new (, n) reaction rates on the weak s-process in metal-poor massive stars
Wenyu Xin, Chun-Ming Yip, Ken'ichi Nomoto +2
Massive stars are significant sites for the weak s-process (ws-process). Ne and O are, respectively, the main neutron source and poison for the ws-process. In the met…
Impacts of the O(O, n)S reaction rate on the evolution and nucleosynthesis in Pop III massive stars
Wenyu Xin, Ken'ichi Nomoto, Xianfei Zhang +1
We first present a systematic investigation into the effect of the O(O, n)S reaction rate on the evolution and nucleosynthesis of Population III (Pop III) star…
Abundance Pattern Fitting with Bayesian Inference: Constraining First Stars' Properties and Their Explosion Mechanism with Extremely Metal-poor Stars
Ruizheng Jiang, Haining Li, Gang Zhao +2
The abundance patterns of extremely metal-poor stars preserve a fossil record of the Universe's earliest chemical enrichment by the supernova explosions from the evolution of first…