Modeling dust mass and grain-size distributions of galaxies across cosmic time

Dust plays a crucial role in the physics of galaxy evolution and radiative transfer in the interstellar medium. In this work, we investigate the evolution of dust content using a dust evolution model combined with the state-of-the-art cosmological hydrodynamical simulation suite SIMBA. In this model, dust grains form in stellar ejecta, grow via the accretion of metals and are destroyed by sputtering in the hot halos and shocks of supernovae. The model additionally tracks the grain size distributions which evolve through grain growth, aforementioned destructive processes and grain-grain collisional processes including shattering and coagulation. Using the simulations, I will present the dust scaling relations and grain-size distributions of galaxies across cosmic time. I will discuss the physics driving the evolution of the dust mass and grain-size distributions, and the impact on extinction laws.