First two columns of panels: stellar surface brightness maps (top) and line-of-sight velocity field (bottom) from two additional simulations of NGC 5238 discussed in Sect. 4.3. The columns, from left to right, show the simulations with initial velocities v_x = −10 km s⁻¹ and v_x = −20 km s⁻¹, respectively. The mock surface brightness and velocity field maps are obtained as in Figs. 4 and 5. Second two columns of panels: same as the first two columns, but for UGC 8760. In this case, instead of showing two different simulations, the columns show the same simulation but at different snapshots that both replicate the galaxy observed structure and kinematics. The merger mass ratio of the simulation is M_dm/M_{dm, sat} = 24.