Nucleosynthesis in a neutrino-driven supernova explosion of first stars

Shin Ichiro Fujimoto, Masa-Aki Hashimoto, Masaomi Ono, Kei Kotake

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We examine explosive nucleosynthesis during neutrino-driven, aspherical supernovae (SNe) of Population (Pop) III stars, based on two-dimensional (2D) hydrodynamic simulations of the explosion of 11-40M Pop III stars. The magnitude and asymmetry of the explosion energy are estimated with the simulations. By post-processing calculations with a large nuclear reaction network, we have evaluated abundances and masses of ejecta from the aspherical SNe. We find that the evaluated abundance patterns are similar to those observed in extremely metal poor stars, as shown in spherical and 2D models, in which the explosion is manually and spherically initiated. Faint SNe of 11 and 15M progenitors show large [C/Fe] > 0.7, as observed in C-enhanced metalpoor stars. Moreover, observed increasing trend of [C/O] towards for lower [O/H] could rely on a fact that [C/O] increases and [O/H] decreases for a progenitor with a lower mass.

Original languageEnglish
Title of host publicationFirst Stars IV - From Hayashi to the Future -
Pages355-357
Number of pages3
DOIs
Publication statusPublished - Dec 1 2012
Event1st Stars IV: From Hayashi to the Future - Kyoto, Japan
Duration: May 21 2012May 25 2012

Publication series

NameAIP Conference Proceedings
Volume1480
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

Other1st Stars IV: From Hayashi to the Future
CountryJapan
CityKyoto
Period5/21/125/25/12

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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