We have performed hydrodynamical simulations to investigate the effects of galactic winds on the high-redshift (z = 3) universe. Strong winds suppress the formation of low-mass galaxies significantly, and the metals carried by them produce C IV absorption lines with properties in reasonable agreement with observations. The winds have little effect on the statistics of the H I absorption lines, because the hot gas bubbles blown by the winds fill only a small fraction of the volume and because they tend to escape into the voids, thereby leaving the filaments that produce these lines intact.
Galactic winds in the intergalactic medium / Theuns, T; Viel, Matteo; Kay, S; Schaye, J; Carswell, B; Tzanavaris, P.. - In: THE ASTROPHYSICAL JOURNAL. - ISSN 0004-637X. - 578:1 Part: 2(2002), pp. L5-L8. [10.1086/344521]
Galactic winds in the intergalactic medium
Viel, Matteo;
2002-01-01
Abstract
We have performed hydrodynamical simulations to investigate the effects of galactic winds on the high-redshift (z = 3) universe. Strong winds suppress the formation of low-mass galaxies significantly, and the metals carried by them produce C IV absorption lines with properties in reasonable agreement with observations. The winds have little effect on the statistics of the H I absorption lines, because the hot gas bubbles blown by the winds fill only a small fraction of the volume and because they tend to escape into the voids, thereby leaving the filaments that produce these lines intact.| File | Dimensione | Formato | |
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