Astronomy and Astrophysics – Astronomy
Scientific paper
May 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aas...198.5208s&link_type=abstract
American Astronomical Society, 198th AAS Meeting, #52.08; Bulletin of the American Astronomical Society, Vol. 33, p.863
Astronomy and Astrophysics
Astronomy
Scientific paper
We discuss the evidence for and implications of galaxy-scale high velocity outflows from star forming galaxies at high redshift. It appears that galactic winds are present in essentially every UV-selected star forming galaxy at high redshift; these winds are probably responsible for removing dust from the sites of rapid star formation, allowing for their discovery using rest-UV observations. The impact of the winds on the intergalactic medium (IGM) may be extremely important-- the outflows probably allow for leaking stellar Lyman continuum radiation from the galaxies (affecting the ionization state of the IGM), for the pollution of the diffuse IGM with metals, and possibly for altering the hydrodynamics of the IGM and therefore the degree to which it can be treated as a simple fluid tracing matter fluctuations. We present evidence that star forming galaxies have indeed altered the state of the IGM as compared to most theoretical model expectations.
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