Edge-on projection of simulated dwarf galaxy (TNG50-714463, stellar and virial masses are shown in the legend, left panel), split into its in situ (centre panel) and accreted (right panel) stellar components. Our definition of galaxy radius, r_glx = 0.25 r₂₀₀ = 24.25 kpc, is indicated by the cyan circles, separating the main galaxy from its outer stellar halo. This example has an accreted mass comparable to the median value for galaxies of comparable mass (f_acc = 0.053). Brighter colours indicate a higher number density of star particles, while starred symbols show outer halo stars coloured according to their origin (blue for in situ; red for accreted). Images generated with PySPHViewer (Benítez-Llambay 2017).