Infrared luminosity versus redshift. The ‘composite’ classification is also shown according to the following color-code: in blue are represented the rotating isolated disk galaxies (0 (R)), in magenta the isolated perturbed disks (0 (P)), in green the interacting systems and in red the post coalescence mergers. Galaxies which belong to the same system (ESO 297-G011/G012, F12596 E/W and IC 4518 E/W) are identified using a solid line. Galaxies containing an AGN are identified by a square.