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Radiation feedback in dusty clouds

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Title: Radiation feedback in dusty clouds
Authors: Ishiki, Shohei Browse this author
Okamoto, Takashi Browse this author →KAKEN DB
Keywords: radiative transfer
methods: numerical
ISM: clouds
HII regions
Issue Date: 21-Mar-2017
Publisher: Oxford University Press
Journal Title: Monthly notices of the royal astronomical society
Volume: 466
Issue: 1
Start Page: L123
End Page: L127
Publisher DOI: 10.1093/mnrasl/slw253
Abstract: 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.
Rights: 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.
Type: article
Appears in Collections:理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 岡本 崇

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