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The Role of Type Ia Supernovae in Chemical Evolution I: Lifetime of Type Ia Supernovae and Galactic Supernova Rates
Chiaki Kobayashi, Ken'ichi Nomoto
We construct a new model of Type Ia Supernovae (SNe Ia), based on the single degenerate scenario, taking account of the metallicity dependences of the white dwarf (WD) wind and the…
Simulations of Cosmic Chemical Enrichment with Hypernova
Chiaki Kobayashi
We simulate cosmic chemical enrichment with a hydrodynamical model including supernova and hypernova feedback. We find that the majority of stars in present-day massive galaxies fo…
Galactic chemical evolution: Carbon through Zinc
C. Kobayashi, H. Umeda, K. Nomoto +2
We calculate the evolution of heavy element abundances from C to Zn in the solar neighborhood adopting our new nucleosynthesis yields. Our yields are calculated for wide ranges of…
Nucleosynthesis Yields of Core-Collapse Supernovae and Hypernovae, and Galactic Chemical Evolution
Ken'ichi Nomoto, Nozomu Tominaga, Hideyuki Umeda +2
We present new nucleosynthesis yields as functions of the stellar mass, metallicity, and explosion energy (corresponding to normal supernovae and Hypernovae). We apply the results…
Simulations of Cosmic Chemical Enrichment
Chiaki Kobayashi, Volker Springel, Simon D. M. White
Using a new numerical model for cosmic chemical evolution, we study the influence of hypernova feedback on the star formation and metal enrichment history of the universe. For assu…
Yields of Population III Supernovae and the Abundance Patterns of Extremely Metal-Poor Stars
Ken'ichi Nomoto, Nozomu Tominaga, Hideyuki Umeda +1
The abundance patterns of extremely metal-poor (EMP) stars provide us with important information on nucleosynthesis in supernovae (SNe) formed in a Pop III or EMP environment, and…