We investigate the impact of environment on metal absorption observed in the Lyman α forest. Weak CIV absorption in spectrum of Q1422+231 is searched for using pixel correlation techniques in regions of the spectrum close to and far from galaxies at z ~ 3. This is achieved both using strong CIV absorption as a proxy for the presence of galaxies near the line of sight and by using the positions of observed Lyman break galaxies. We find that much of the carbon abundance is dependent not only on the Hi optical depth and so gas overdensity but also proximity to highly enriched regions. Furthermore, most CIV absorption detected appears to be far from galaxies. This will improve constraints on models of feedback and the evolution of the intergalactic medium and galaxy formation.
22nd Texas Symposium on Relativistic Astrophysics
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