| Title |
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Radiation-hydrodynamical collapse of pre-galactic clouds in the ultraviolet background
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Radiation-hydrodynamical collapse of pre-galactic clouds in the ultraviolet background
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| Creator |
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| Rights |
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©2000 The Royal Astronomical Society
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| Subject |
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Other
en
radiative transfer,galaxies,formation,cosmology,theory,diffuse radiation
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| Description |
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Other
application/pdf
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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.
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| Publisher |
Wiley
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| Date |
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| Language |
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| Resource Type |
journal article |
| Version Type |
VoR |
| Identifier |
URI
https://ir.soken.ac.jp/records/3292
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| Relation |
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isIdenticalTo
DOI
https://doi.org/10.1046/j.1365-8711.2000.03589.x
10.1046/j.1365-8711.2000.03589.x
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URI
http://www.blackwellpublishing.com/pdf/mnr_caf.pdf
Copyright
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| Journal |
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Monthly Notices of the Royal Astronomical Society
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Monthly Notices of the Royal Astronomical Society
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Volume Number315
Issue Number1
Page StartL1
Page EndL7
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| File |
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| Oaidate |
2023-08-18 |
