Analysis of the Features of Reionization Cosmic Dust with DUSTiER and THESAN Simulation

Cosmic dust presented in the universe plays an important role in light extinction and determining the metallicity of galaxies. Dust properties of galaxies closer to the Earth are easier to observe. However, the dust of more distant universes, for example, the reionization universe, is not well understood. This paper will focus on discussing attributes, distributions, and interactions of dust during the high red-shift reionization galaxies, with the aid of computer simulations. The analysis of the first introduced simulation model DUSTiER (DUST in the Epoch of Reionization) focuses on dust’s mass and its extinction of UV light in reionization. The main results include observed gentle UV slope variations for stellar entities with smaller masses but considerable fluctuations for higher stellar masses. Discussion of the second model THESAN analyzes on metallicity and mass distribution of dusty galaxies. Primary results exhibit a negative relation between dust-to-metal ratio and metallicity, and an increasing dust mass share of Interstellar Stellar Medium (ISM) as the universe approaches lower redshifts. These results offer a better comprehension of dust mass during the reionization epoch and the methods used by contemporary computer models to simulate it.