open access

https://hdl.handle.net/2115/67327

Radiation feedback in dusty clouds

英語

HII regions

2017-03-21

Oxford University Press

Monthly notices of the royal astronomical society

466(1)

L123-L127

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.

学術雑誌論文

Version of Record

This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society: Letters ©: 2016 Shohei Ishiki, Takashi Okamoto Published by Oxford University Press on behalf of The Royal Astronomical Society. All rights reserved.

0035-8711