Damped Lyman Alpha systems in Cosmological Simulations
by
Gabriel Altay(Durham)
→
Europe/Stockholm
FA31
FA31
Description
I will discuss methods for adding self shielding and molecular
hydrogen to cosmological simulations of galaxy formation. These processes
are added in the post processing of the simulation results without introducing
any new free parameters. The self shielding technique is a reverse ray
tracing method and the molecular hydrogen prescription is based on
observations from Blitz and Rosolowsky (2006). I will show that, with these
corrections to the simulation output, the model HI column density distribution
function matches observations over ten decades in log N(HI) and thus explains
all known types of Ly-a absorbers in the Universe.
