Department of Astronomy Center for Radiophysics & Space Research

Populating the Hubble Sequence in Cosmological Simulations

9Friday, May. 9
Paul Torrey (CfA)
12:20 pm
Space Sciences 622

Cosmological simulations are among the most powerful tools available to probe the non-linear regime of cosmic structure formation. They also provide one of the most powerful testbeds for understanding the impact that hydrodynamics and feedback processes have on the evolution of galaxies. In my talk, I will present galaxy formation simulations that couple a novel moving mesh computational approach with explicit baryon feedback prescriptions. This results in galaxy formation models that reproduce a wide range of observational constraints including the galaxy stellar mass function, cosmic star formation rate, and galaxy morphological diversity. I will discuss the numerical methods that we've employed, how they vary from traditional methods, and why this matters to our understanding of galaxy formation. Finally, I will discuss our efforts to increase the usability of our models by observers by coupling our simulations with stellar populations synthesis models. This allows us to produce simulated galaxy image catalogs which can be used to select galaxy populations with observational techniques and identify their past formation history or subsequent evolution.