Enrichment of the High-Redshift IGM by Galactic Winds

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dc.creatorAguirre, A.
dc.creatorSchaye, J.
dc.creatorHernquist, L.
dc.creatorWeinberg, D.
dc.creatorKatz, N.
dc.creatorGardner, J.
dc.date2001-09-17
dc.date.accessioned2026-07-07T02:00:01Z
dc.date.available2026-07-07T02:00:01Z
dc.descriptionThis paper discusses a semi-numerical method of investigating the enrichment of the intergalactic medium by galactic winds. We find that most galaxies at z >~ 3 should be driving winds, and that (if these winds are similar to those at low-z) these winds should escape to large distances. Our calculations -- which permit exploration of a large region of model parameter space -- indicate that the wind velocity, the mass of the wind-driving galaxies, the fraction of ambient material entrained, and the available time (between wind launch and the observed redshift) all affect wind propagation significantly; other physical effects can be important but are sub-dominant. We find that under reasonable assumptions, the enrichment by 3 <~ z <~ 6 galaxies could account for the quantity of metals seen in the Ly-alpha forest, though it is presently unclear whether this enrichment is compatible with the intergalactic medium's detailed metal distribution or relative quiescence.
dc.description7 pages, 4 ps figures; to appear in "Chemical Enrichment of Intracluster and Intergalactic Medium", Vulcano, Italy, 14-18 May 2001, ASP Conference Series
dc.identifierhttps://arxiv.org/abs/astro-ph/0109278
dc.identifierhttp://arxiv.org/abs/astro-ph/0109278
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/3340
dc.subjectAstrophysics
dc.titleEnrichment of the High-Redshift IGM by Galactic Winds
dc.typetext

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