MUDF properties of galaxy groups at 0.5<z<1.5

The MUDF survey is collecting ~150h on-source of integral field optical spectroscopy in a 1.5x1.2arcmin^2^ region which hosts several astrophysical structures along the line of sight, including two bright z~3.2 quasars with close separation (~500kpc).

Following the description of the data reduction procedures, we present the analysis of the galaxy environment and gaseous properties of seven groups detected at redshifts 0.5<z<1.5, spanning a large dynamic range in halo mass, log(M_h_/M_{sun}_)~11-13.5. For four of the groups, we find associated MgII absorbers tracing cool gas in high-resolution spectroscopy of the two quasars, including one case of correlated absorption in both sightlines at distance ~480kpc.