MOSAIC on the ELT : optomechanical design of the NIR spectrograph

International audience; Context. The circumgalactic medium (CGM) is the location where the interplay between large-scale outflows and accretion onto galaxies occurs. Metals in different ionization states flowing between the circumgalactic and intergalactic mediums are affected by large galactic outflows and low-ionization state inflowing gas. Observational studies on their spatial distribution and their relation with galaxy properties may provide important constraints on models of galaxy formation and evolution. Aims. The main goal of this paper is to provide new insights into the spatial distribution of the circumgalactic of star-forming galaxies at 1.5 < z 1.5) and stellar mass (log[ M ⋆ / M ⊙ ] > 10.2) show stronger C IV absorptions compared with those low SFR (log[SFR/( M ⊙ yr −1 )]