Radial distribution of the LOS velocity for the PNe (yellow), metal rich, and metal poor GCs (red and blue respectively), and the dwarf satellite galaxies (green) around NGC 5128. The LOS velocities are with respect to the systemic velocity of NGC 5128 of 540 km s⁻¹ (Hughes et al. 2023). The solid black line shows the radial profile for the escape velocity for NGC 5128 derived from our best-fit mass model including dark matter presented in Sect. 4.1, while the dashed lines shows the escape velocity for just the stellar mass. The bottom panel is a histogram with the radial distribution for the PNe, GCs and dwarfs in the same colors as the top panel.