Journal Article Radiation feedback in dusty clouds

Ishiki, Shohei  ,  Okamoto, Takashi

466 ( 1 )  , pp.L123 - L127 , 2017-03-21 , Oxford University Press
We have investigated the impact of photoionization and radiation pressure on a dusty starforming cloud using one-dimensional radiation hydrodynamic simulations, which include absorption and re-emission of photons by dust. We find that, in a cloud of mass 10(5)M circle dot and radius 17 pc, the effect of radiation pressure is negligible when star formation efficiency is 2 per cent. The importance of radiation pressure increases with increasing star formation efficiency or an increasing dust-to-gas mass ratio. The net effect of radiation feedback, however, becomes smaller with the increasing dust-to-gas mass ratio, since the absorption of ultraviolet photons by dust grains suppresses photoionization and hence photoheating.

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