| Abstract |
We investigate the effect of the growth of dust grains on the evolution of a low-metallicity collapsing cloud. Dust grains in the early universe play a crucial role in the formation of low-mass stars in the low-metallicity interstellar medium. A gas cloud fragments into low-mass pieces by rapid dust cooling. In the early universe, grains are largely formed in the ejecta of supernovae and destroyed by the reverse shock penetrating the ejecta. The destruction can suppress the condensation factor of dust grains. On the other hand, Nozawa et al.(2012) found that grains can grow by depletion of metallic atoms in the high density regime. In this work, we calculate the evolution of the collapsing gas cloud, considering the growth of dust grains. We report how the grain growth changes the thermal evolution of collapsing gas cloud. |
