=Date ant Place=
Oct.17th(Wed.) 13:30~ at Nishina Hall
Prof. Masaaki Hashimoto
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.