ASPHERICAL PROPERTIES OF HYDRODYNAMICS AND NUCLEOSYNTHESIS IN JET-INDUCED SUPERNOVAE

Jet-induced supernovae (SNe) have been suggested to occur in gamma-ray bursts and highly-energetic SNe (hypernovae). I investigate hydrodynamical and nucleosynthetic properties of the jet-induced explosion of a population III 40 M-circle dot 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. E-dep = 120 x 10(51) erg s(-1) and 1.5 x 10(51) erg s(-1), respectively. 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 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 degrees-35 degrees of the model with. E-dep = 120 x 10(51) erg 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 extremely metal-poor stars.