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Outflows are likely to play a key role in shaping the early assembly of galaxies. Tidal interactions trigger star formation and black hole growth which subsequently drive outflows, ejecting gas and metals into the surrounding environment. Detecting and characterizing outflows at z > 3.5 is challenging, but ground-breaking new observational datasets are now providing the first key insights into their properties. I will present exciting new results from the ESO large program XQR-30, focusing on the properties of CIV absorbers at z=4-6 which probe the early enrichment of the circumgalactic medium by star-formation-driven outflows. I will also briefly introduce two new surveys that will use ALMA and JWST to directly constrain the prevalence and properties of outflows in the early Universe. |
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