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The circumgalactic medium (CGM) is the location where the interplay betweenlarge-scale outflows and accretion onto galaxies occurs. Metals in differentionization states flowing between the circumgalactic and intergalactic mediumsare affected by large galactic outflows and low-ionization state inflowing gas.Observational studies on their spatial distribution and their relation withgalaxy properties may provide important constraints on models of galaxyformation and evolution. To provide new insights into the spatial distributionof the circumgalactic of star-forming galaxies, we select a sample of 238 closepairs at $1.5 < z <4.5$ ($\langle z\rangle\sim$2.6) from the VIMOS Ultra DeepSurvey. We then generate composite spectra by co-adding spectra of $background$galaxies that provide different sight-lines across the CGM to examine thespatial distribution of the gas located around these galaxies and investigatepossible correlations between the strength of the low- and high-ionizationabsorption features with different galaxy properties. We detect C II, Si II, SiIV and C IV) up to separations $\langle b \rangle=$ 172 kpc and 146 kpc. Our$W_{0}$ radial profiles suggest a potential redshift evolution for the CGM gascontent producing these absorptions. We find a correlation between C II and CIV with star formation rate, stellar mass and trends with galaxy size estimatedby the effective radius and azimuthal angle. Galaxies with high star formationrate show stronger C IV absorptions compared with star-forming galaxies withlow SFR and low stellar mass. These results could be explained by strongeroutflows, softer radiation fields unable to ionize high-ionization state linesor by the galactic fountain scenario where metal-rich gas ejected from previousstar-formation episodes fall back to the galaxy.

Metal content of the circumgalactic medium around star-forming galaxies at z $\sim$ 2.6 as revealed by the VIMOS Ultra-Deep Survey