Supernova nucleosynthesis in the early universe

Tominaga, Nozomu*; Umeda, Hideyuki*; Maeda, Keiichi*; Nomoto, Kenichi*; Iwamoto, Nobuyuki

The first metal enrichment in the universe was made by supernova (SN) explosions of population (Pop) III stars. The trace remains in abundance patterns of extremely metal-poor (EMP) stars. We investigate the properties of nucleosynthesis in Pop III SNe by means of comparing their yields with the abundance patterns of the EMP stars. We focus on (1) jet-induced SNe with various energy deposition rates [ $dot{E}_{rm dep}=(0.3-1500)times 10^{51}$ ergs s $^{-1}$ ], and (2) SNe of stars with various main-sequence masses ( $M_{rm ms}=13-50M_odot$ ) and explosion energies [ $E=(1-40)times10^{51}$ ergs]. The varieties of Pop III SNe can explain varieties of the EMP stars: (1) higher [C/Fe] for lower [Fe/H] and (2) trends of abundance ratios [X/Fe] against [Fe/H].

Language	:	English
Journal	:	Proceedings of the International Astronomical Union, Volume 4, Symposium S255
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Pages	:	p.189 - 193
Publication Year/Month	:	2008/06
Meeting title	:	Low-Metallicity Star Formation; From the First Stars to Dwarf Galaxies
Held date	:	2008/06
Location (city)	:	Rapallo
Location (country)	:	Italy
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Paper URL	:	https://doi.org/10.1017/S1743921308024800
DOI for research data	:
Keywords	:	no keyword
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Registration No. : BB20082642
JAEA Abstracts No. :
Paper Submission No. : 13654

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