Abstract:
The first stars in the Universe must have played crucial roles in the evolution of early universe, yet their nature has not been well-understood. I will present possible theoretical models of first stars, i.e., their evolution with mass accretion, explosions as first supernovae, and explosive nucleosynthesis. I will show how the comparison between the nucleosynthesis yields and the peculiar abundance patterns observed in extremely metal-poor stars can constrain the properties (mass function, explosion energy, asphericity, etc.) of first stars and first supernovae.
Brief Bio:
Experience
1974 PhD in Astronomy at the University of Tokyo; Post Doc at the University of Tokyo
1976 Assistant Professor at Department of Physics, Ibaraki University
1982 Assistant Professor at Department of General Systems Studies, University of Tokyo
1985 Associate Professor at Department of Earth Science and Astronomy, University of Tokyo
1989 Associate Professor at Department of Astronomy, University of Tokyo
1993 Professor at Department of Astronomy, University of Tokyo
2008 Professor at Kavli IPMU, University of Tokyo
2017 Senior Scientist at Kavli IPMU, University of Tokyo; Professor Emeritus of the University of Tokyo
Received the following prizes for the theoretical work on stellar evolution, supernova explosion, nucleosynthesis, and gamma-ray bursts
1989 Nishina Memorial Prize
1995 Japan Academy Prize
2010 IAP Medal (Institut d'Astrophysique de Paris)
2015 Marcel Grossmann Award
2019 Hans A. Bethe Prize (American Physical Society)