The Impact of Ultraviolet Radiation on Secondary Pop III Star Formation

摘要

Using thee-dimensional radiation hydrodynamics (RHD) simulations, we explore the radiative feedback effects by a Population III (Pop III) star on second star formation. We find that the adjacent peak can survive, although a shock associated with ionization front strips a large amount of gas. The surviving cloud is never ionized, but H_2 fractions become large due to radiation hydrodynamic effects. These effects lower mass accretion rates onto the adjacent peak, and consequently the second star is likely to he less massive.