Simulated mass-velocity (MV) distribution of core-originated material at t = 10 000 yr from the jet-driven shell simulation in Figs.5 and 10, inclined byi= 55° from the line of sight (connected black symbols). Blue and red symbols show observed MV distributions in the blueshifted and redshifted lobes of the HH46-47 outflow, as derived by Zhang et al. (2016). Open squares assume optically thin CO emission, while filled circles include a velocity-dependent correction for optical depth (see text). The dashed lines show power-laws of slope γ = –3.4 (red) and γ = –2.7 (blue).