Monthly Colloquium

Stellar Evolution and Nucleosynthesis in Massive Stars

by Prof. Masaaki Hashimoto (Kyushu University)

Nishina Hall

Nishina Hall


=Date ant Place=

Oct.17th(Wed.) 13:30~ at Nishina Hall



Prof. Masaaki Hashimoto

(Kyushu University)



Steller Evolution and Nucleosynthesis in Massive Stars



Presupernova models and nucleosynthesis in massive stars are reviewed in the context of supernovae. Evolutionary models of massive stars toward the onset of collapse for the stellar mass of M≧10M☉ in the main-sequence stage are presented. It is stressed that silicon shell
burning is important to determine the final size of the iron core. As the result, we obtain the iron core mass ranges from 1.2 to 1.9 M☉ for 13-70 M☉ stars. As for nucleosynthesis, the s-process during core helium
burning and p-process in the subsequent burning stage are presented in detail. The r-process during supernova explosion is discussed.