| Item type |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2012-12-13 |
| タイトル |
|
|
タイトル |
Radiation-hydrodynamical collapse of pre-galactic clouds in the ultraviolet background |
| タイトル |
|
|
タイトル |
Radiation-hydrodynamical collapse of pre-galactic clouds in the ultraviolet background |
|
言語 |
en |
| 言語 |
|
|
言語 |
eng |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
radiative transfer,galaxies,formation,cosmology,theory,diffuse radiation |
| 資源タイプ |
|
|
資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
|
資源タイプ |
journal article |
| 著者 |
KITAYAMA, Tetsu
TAJIRI, Yukiko
UMEMURA, Masayuki
SUSA, Hajime
IKEUCHI, Satoru
|
| 著者別名 |
池内, 了
|
| 抄録 |
|
|
内容記述タイプ |
Abstract |
|
内容記述 |
To explain the effects of the ultraviolet (UV) background radiation on the collapse of pre-galactic clouds, we implement a radiation–hydrodynamical calculation, combining one-dimensional spherical hydrodynamics with an accurate treatment of the radiative transfer of ionizing photons. Both absorption and scattering of UV photons are explicitly taken into account. It turns out that a gas cloud contracting within the dark matter potential does not settle into hydrostatic equilibrium, but undergoes run-away collapse even under the presence of the external UV field. The cloud centre is shown to become self-shielded against ionizing photons by radiative transfer effects before shrinking to the rotation barrier. Based on our simulation results, we further discuss the possibility of H2 cooling and subsequent star formation in a run-away collapsing core. The present results are closely relevant to the survival of subgalactic Population III objects as well as to metal injection into intergalactic space. |
| 書誌情報 |
Monthly Notices of the Royal Astronomical Society
en : Monthly Notices of the Royal Astronomical Society
巻 315,
号 1,
p. L1-L7,
発行日 2000-06
|
| 出版者 |
|
|
出版者 |
Wiley |
| ISSN |
|
|
収録物識別子タイプ |
ISSN |
|
収録物識別子 |
00358711 |
| DOI |
|
|
関連タイプ |
isIdenticalTo |
|
|
識別子タイプ |
DOI |
|
|
関連識別子 |
https://doi.org/10.1046/j.1365-8711.2000.03589.x |
|
|
関連名称 |
10.1046/j.1365-8711.2000.03589.x |
| 権利 |
|
|
権利情報 |
©2000 The Royal Astronomical Society |
| 関連サイト |
|
|
|
識別子タイプ |
URI |
|
|
関連識別子 |
http://www.blackwellpublishing.com/pdf/mnr_caf.pdf |
|
|
関連名称 |
Copyright |
| フォーマット |
|
|
内容記述タイプ |
Other |
|
内容記述 |
application/pdf |
| 著者版フラグ |
|
|
出版タイプ |
VoR |
|
出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
j.1365-8711.2000.03589.x (446.2 kB)
