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Dust enrichment in a cosmic volume

Image Credit: Aoyama et al.

Cosmological simulation with dust formation and destruction

We calculate dust production and evolution with cosmological simulations. In our simulation, we include dust production by stars, destruction by supernovae or hot gas, and growth in molecular clouds, and dust-dust interaction (shattering and coagulation). We separately calculate the abundances of large (> 0.03 micron) and small grains (< 0.03 micron) to obtain the information on the grain size distribution. In the figure below, we show the time evolution (at z = 6.1, 2.4, 1.0, and 0.0) of the projected density field of gas, small and large grains. The simulation box size is 50 h-1 Mpc (Aoyama et al. 2018). Based on this result, we are now calculating the statistical properties of dust emission at various redshifts.