Revisiting The First Galaxies: The effects of Population III stars on their host galaxies

Understand

We revisit the formation and evolution of the first galaxies using new hydrodynamic cosmological simulations with the ART code.

• Our simulations feature a recently developed model for H2 formation and dissociation, and a star formation recipe that is based on molecular rather than atomic gas.
• Here, we develop and implement a recipe for the formation of metal-free Population III stars in galaxy-scale simulations that resolve primordial clouds with sufficiently high density.
• We base our recipe on the results of prior zoom-in simulations that resolved the protostellar collapse in pre-galactic objects.