Outflow broadening at late evolutionary times on large scales without (top panels) and with (bottom panels) photoionization feedback. All panels show the protostellar outflow and HII region; the accretion disk covers only a few pixels here. The outflow velocity is color-coded as in Fig. 3. The extent of the ionized HII region is shown as a purple contour. The disk density is color-coded as in Fig. 1. From left to right: systems at t = 90, 100, 110, and 120 kyr of evolution. The images cover ≈1 pc in height. Data is taken from the simulation runs “1.0pc-PO-RAD” and “1.0pc-PO-RAD-ION”, respectively.