Poster Presentation
Cosmological simulation with dust evolution
Presenter: Kuan-Chou Hou (ASIAA/NTU)
Dust enrichment is one of the most important aspects in galaxy evolution. The evolution of dust is tightly coupled with the nonlinear evolution of the ISM including star formation and stellar feedback, which drive the chemical enrichment in a galaxy. Numerical hydrodynamical simulation provides a powerful approach to studies of such nonlinear processes.
In this work, we present a cosmological simulation using smoothed particle hydrodynamics (SPH) with dust evolution. We consider dust production in stellar ejecta, destruction in supernova shocks, dust growth by accretion and coagulation, and dust disruption by shattering for the processes driving the dust evolution. We also treat the evolution of grain sizes distribution by representing the entire grain radius range by small (< 0.03 μm) and large (> 0.03 μm) grains.
We show that our cosmological simulation allows us to examine the dust mass function and to analyze the dust abundance and dust properties in galaxies statistically. We also present some important predictions on the dust content in high-redshift galaxies to be tested by ALMA observations.
asiaa.sinica.edu.tw