Galaxies (subhalos) of the TNG300-1 simulation box after applying the selection described in Sect. 2.2. These galaxies have stellar masses in the range 10⁹ ≤ M_*[M_⊙] ≤ 10¹² and constitute our reference catalogue. The full 3D box has been projected onto the xy plane. The black square represents the boundaries of the central volume of [250 Mpc]³ considered for the analysis (see Sect. 3.2).