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タイトル
  • Radiation-hydrodynamical collapse of pre-galactic clouds in the ultraviolet background
  • en Radiation-hydrodynamical collapse of pre-galactic clouds in the ultraviolet background
作成者
    • 池内, 了
    • e-Rad 90025461
    • KITAYAMA, Tetsu
    • TAJIRI, Yukiko
    • UMEMURA, Masayuki
    • SUSA, Hajime
    • IKEUCHI, Satoru
権利情報
  • ©2000 The Royal Astronomical Society
主題
  • Other en radiative transfer,galaxies,formation,cosmology,theory,diffuse radiation
内容注記
  • Other application/pdf
  • Abstract 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.
出版者 Wiley
日付
    Issued2000-06
言語
  • eng
資源タイプ journal article
出版タイプ VoR
資源識別子 URI https://ir.soken.ac.jp/records/3292
関連
  • isIdenticalTo DOI https://doi.org/10.1046/j.1365-8711.2000.03589.x 10.1046/j.1365-8711.2000.03589.x
  • URI http://www.blackwellpublishing.com/pdf/mnr_caf.pdf Copyright
収録誌情報
    • ISSN 00358711
      • Monthly Notices of the Royal Astronomical Society en Monthly Notices of the Royal Astronomical Society
      • 巻315 号1 開始ページL1 終了ページL7
ファイル
コンテンツ更新日時 2023-08-18