Lumina runs a 500 cMpc radiation-hydrodynamic simulation combining IllustrisTNG galaxy formation with six-bin M1 radiation transport to predict late stellar-driven HI reionization ending around z=4.75 and AGN-driven HeII reionization nearly complete by z=3.
Constraining the Statistics of Population III Binaries
2 Pith papers cite this work. Polarity classification is still indexing.
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abstract
We perform a cosmological simulation in order to model the growth and evolution of Population III (Pop III) stellar systems in a range of host minihalo environments. A Pop III multiple system forms in each of the ten minihaloes, and the overall mass function is top-heavy compared to the currently observed initial mass function in the Milky Way. Using a sink particle to represent each growing protostar, we examine the binary characteristics of the multiple systems, resolving orbits on scales as small as 20 AU. We find a binary fraction of ~36%, with semi-major axes as large as 3000 AU. The distribution of orbital periods is slightly peaked at < 900 yr, while the distribution of mass ratios is relatively flat. Of all sink particles formed within the ten minihaloes, ~50% are lost to mergers with larger sinks, and ~50% of the remaining sinks are ejected from their star-forming disks. The large binary fraction may have important implications for Pop III evolution and nucleosynthesis, as well as the final fate of the first stars.
verdicts
UNVERDICTED 2representative citing papers
Semi-analytical simulation of Population III stars predicts ~130 unmerged IMBHs in Milky Way-like galaxies with negligible EBL contribution below 10^{-3} nW m^{-2} sr^{-1}.
citing papers explorer
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Introducing the Lumina project: large-volume radiation-hydrodynamic simulations of the epochs of hydrogen and helium reionization
Lumina runs a 500 cMpc radiation-hydrodynamic simulation combining IllustrisTNG galaxy formation with six-bin M1 radiation transport to predict late stellar-driven HI reionization ending around z=4.75 and AGN-driven HeII reionization nearly complete by z=3.
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Intermediate-mass black holes and contribution to extragalactic background light from Population III stars in Milky Way-like galaxies
Semi-analytical simulation of Population III stars predicts ~130 unmerged IMBHs in Milky Way-like galaxies with negligible EBL contribution below 10^{-3} nW m^{-2} sr^{-1}.