Histogram of the masses of bodies that crossed the inner domain radius of the N-body simulation r_domain. The peakat the smallest mass bin is due to bodies of the initial planetesimal size. The red line denotes the cumulative mass percentage of crossed bodies. The vertical dotted line corresponds to a cumulative mass percentage of 1%. Bodies to the left of this threshold are neglected after they crossed r_domain; only the bodies more massive than the threshold mass are followed. This plot stacks the results of ten realisations of the fiducial simulation.