Nucleosynthesis in neutrino-driven, aspherical Population III supernovae

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

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

Abstract

We investigate explosive nucleosynthesis during neutrino-driven, aspherical supernova (SN) explosion aided by standing accretion shock instability (SASI), based on two-dimensional hydrodynamic simulations of the explosion of 11, 15, 20, 25, 30 and 40M · stars with zero metallicity. The magnitude and asymmetry of the explosion energy are estimated with simulations, for a given set of neutrino luminosities and temperatures, not as in the previous study in which the explosion is manually and spherically initiated by means of a thermal bomb or a piston and also some artificial mixing procedures are applied for the estimate of abundances of the SN ejecta. 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 matter mixing induced via SASI is important for the abundant production of nuclei with atomic number ≥ 21, in particular Sc, which is underproduced in the spherical models without artificial mixing. We also find that the IMF-averaged abundances are similar to those observed in extremely metal poor stars. However, observed [K/Fe] cannot be reproduced with our aspherical SN models.

Original languageEnglish
Title of host publicationDeath of Massive Stars
Subtitle of host publicationSupernovae and Gamma-Ray Bursts
EditorsPeter W. A. San Antonio, Nobuyuki Kawai, Elena Pian
Pages237-240
Number of pages4
EditionS279
DOIs
Publication statusPublished - Apr 1 2011

Publication series

NameProceedings of the International Astronomical Union
NumberS279
Volume7
ISSN (Print)1743-9213
ISSN (Electronic)1743-9221

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nuclear fusion
supernovae
explosions
neutrinos
ejecta
shock
stars
pistons
nuclear reactions
metallicity
simulation
hydrodynamics
luminosity
asymmetry
nuclei
estimates
metals
temperature
energy

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics

Cite this

Fujimoto, S. I., Hashimoto, M. A., Ono, M., & Kotake, K. (2011). Nucleosynthesis in neutrino-driven, aspherical Population III supernovae. In P. W. A. San Antonio, N. Kawai, & E. Pian (Eds.), Death of Massive Stars: Supernovae and Gamma-Ray Bursts (S279 ed., pp. 237-240). (Proceedings of the International Astronomical Union; Vol. 7, No. S279). https://doi.org/10.1017/S1743921312012987

Nucleosynthesis in neutrino-driven, aspherical Population III supernovae. / Fujimoto, Shin Ichiro; Hashimoto, Masa Aki; Ono, Masaomi; Kotake, Kei.

Death of Massive Stars: Supernovae and Gamma-Ray Bursts. ed. / Peter W. A. San Antonio; Nobuyuki Kawai; Elena Pian. S279. ed. 2011. p. 237-240 (Proceedings of the International Astronomical Union; Vol. 7, No. S279).

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

Fujimoto, SI, Hashimoto, MA, Ono, M & Kotake, K 2011, Nucleosynthesis in neutrino-driven, aspherical Population III supernovae. in PWA San Antonio, N Kawai & E Pian (eds), Death of Massive Stars: Supernovae and Gamma-Ray Bursts. S279 edn, Proceedings of the International Astronomical Union, no. S279, vol. 7, pp. 237-240. https://doi.org/10.1017/S1743921312012987
Fujimoto SI, Hashimoto MA, Ono M, Kotake K. Nucleosynthesis in neutrino-driven, aspherical Population III supernovae. In San Antonio PWA, Kawai N, Pian E, editors, Death of Massive Stars: Supernovae and Gamma-Ray Bursts. S279 ed. 2011. p. 237-240. (Proceedings of the International Astronomical Union; S279). https://doi.org/10.1017/S1743921312012987
Fujimoto, Shin Ichiro ; Hashimoto, Masa Aki ; Ono, Masaomi ; Kotake, Kei. / Nucleosynthesis in neutrino-driven, aspherical Population III supernovae. Death of Massive Stars: Supernovae and Gamma-Ray Bursts. editor / Peter W. A. San Antonio ; Nobuyuki Kawai ; Elena Pian. S279. ed. 2011. pp. 237-240 (Proceedings of the International Astronomical Union; S279).
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