http://arxiv.org/abs/1909.07034
We investigate the distribution of metals in the cosmological volume at $z\sim3$, in particular, provided by massive population III (Pop. III) stars using a cosmological $N$-body simulation in which a model of Pop. III star formation is implemented. Owing to the simulation, we can choose minihaloes where Pop. III star formation occurs at $z>10$ and obtain the spatial distribution of the metals at lower-redshifts. To evaluate the amount of heavy elements provided by Pop. III stars, we consider metal yield of pair-instability or core-collapse supernovae (SNe) explosions of massive stars. By comparing our results to the Illustris-1 simulation, we find that heavy elements provided by Pop. III stars often dominate those from galaxies in low density regions. The median value of the volume averaged metallicity is $Z\sim 10^{-4.5 – -2} Z_{\odot}$ at the regions. We also show that spectroscopic observations with the next generation telescopes are expected to detect the metals imprinted on quasar spectra.
T. Kirihara, K. Hasegawa, M. Umemura, et. al.
Tue, 17 Sep 19
13/98
Comments: 9 pages, 8 figures, submitted to MNRAS
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