Galaxy Properties and UV Escape Fractions During Epoch of Reionization: Results from the Renaissance Simulations

Understand

Cosmic reionization is thought to be primarily fueled by the first generations of galaxies.

• We examine their stellar and gaseous properties, focusing on the star formation rates and the escape of ionizing photons, as a function of halo mass, redshift, and environment using the full suite of the {\it Renaissance Simulations} with an eye to provide better inputs to global reionization simulations.
• This suite, carried out with the adaptive mesh refinement code Enzo, is unprecedented in terms of their size and physical ingredients.
• The simulations probe overdense, average, and underdense regions of the universe of several hundred comoving Mpc$^3$, each yielding a sample of over 3,000 halos in the mass range $10^7 - 10^{9.5}~\Ms$ at their final redshifts of 15, 12.5, and 8, respectively.