Aspherical Properties of Hydrodynamics and Nucleosynthesis in Jet-induced Supernovae

Abstract

Jet-induced supernovae (SNe) have been suggested to occur in gamma-ray bursts (GRBs) and highly-energetic SNe (hypernovae). I investigate hydrodynamical and nucleosynthetic properties of the jet-induced explosion of a population III $40_{\odot }$ star with a two-dimensional special relativistic hydrodynamical code. The abundance distribution after the explosion and the angular dependence of the yield are obtained for the models with high and low energy deposition rates ${\dot{E}}_{\mathrm{dep}}=120\times 10^{51}\mathrm{ergs}{\mathrm{s}}^{-1}$ and $1.5\times 10^{51}\mathrm{ergs}{\mathrm{s}}^{-1}$. The ejection of Fe-peak products and the fallback of unprocessed materials in the jet-induced SNe account for the abundance patterns of the extremely metal-poor (EMP) stars. It is also found that the peculiar abundance pattern of a Si-deficient metal-poor star HE 1424--0241 is reproduced by the angle-delimited yield for $\theta =30^{\circ }-35^{\circ }$ of the model with ${\dot{E}}_{\mathrm{dep}}=120\times 10^{51}\mathrm{ergs}{\mathrm{s}}^{-1}$. Furthermore, I compare the yield of the jet-induced explosion with that of the spherical explosion and confirm the ejection and fallback in the jet-induced explosion is almost equivalent to the "mixing-fallback" in spherical explosions. In contrast to the spherical models, however, the high-entropy environment is realized in the jet-induced explosion and thus [(Sc, Ti, V, Cr, Co, Zn)/Fe] are enhanced. The enhancements of [Sc/Fe] and [Ti/Fe] improve agreements with the abundance patterns of the EMP stars.

12 pages, 11 figures. Accepted for publication in the Astrophysical Journal

References in corpus (8)

• Theory of Core-Collapse Supernovae
• Nucleosynthetic signatures of the first stars
• Asphericity in Supernova Explosions from Late-Time Spectroscopy
• Early Cosmological HII/HeIII Regions and Their Impact on Second-Generation Star Formation
• Double-peaked Oxygen Lines Are not Rare in Nebular Spectra of Core-Collapse Supernovae
• The Connection between Gamma-Ray Bursts and Extremely Metal-Poor Stars: Black Hole-forming Supernovae with Relativistic Jets
• A Near-Infrared and X-ray Study of W49B: A Wind Cavity Explosion
• Chemical Abundance Analysis of the Extremely Metal-Poor Star HE 1300+0157

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• The Peculiar Type Ib Supernova 2006jc: A WCO Wolf-Rayet Star Explosion
• Nucleosynthesis of 56Ni in wind-driven Supernova Explosions and Constraints on the Central Engine of Gamma-Ray Bursts
• Supernova Nucleosynthesis and Extremely Metal-Poor Stars
• Supernova Nucleosynthesis in the Early Universe