Скачать или смотреть HII region trapping in Population III accretion disks | Simon Glover

In this talk, I will present results from our recent extremely high resolution simulations of radiative feedback from the first massive Population III stars. In contrast to previous lower resolution studies, we find that the dense gas in the accretion disks surrounding these stars traps essentially all of the ionizing radiation that these stars emit, preventing the expansion of their HII regions beyond the confines of the disk. I will explain why we find such a different result compared to earlier studies of Pop. III stellar feedback and what this tells us about resolution requirements for successful modelling of this process. I will also discuss the implications of this result for our understanding of Pop. III star formation.