Cumulative distribution function for the masses m_* of stars with m_* > 0.08 M_⊙ in our simulation (black line), compared with those that underwent a truncating encounter −∆R_out/R_out > 0.01 (red line). The distributions are not significantly different, with KS test probability p_KS = 0.87. We also show mass estimates for the stars with discs that are responsible for the observed external structure. We do not show uncertainties in these estimates for clarity, but errors quoted are typically approximately ±0.3 M_⊙. The distribution of masses of stars that have been inferred to have experienced recent truncating encounters are significantly different from those in our simulation, with p_KS = 0.023.