Galactic winds in the intergalactic medium

Details Galactic winds in the intergalactic medium Galactic winds in the intergalactic medium

2002-08-23

arxiv.org/abs/astro-ph/0208418v2

Astrophys.J. 578 (2002) L5-L8

Astronomy and Astrophysics

Astrophysics

4 pages, 4 figures, typos corrected, refs updated, matches published version

Scientific paper

10.1086/344521

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.

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