Radial profiles for VCC 865 (NGC 4396). Left: sSFR profile (blue data points) with a smoothed profile shown as a black curve. The next five upper limits (where no Hα is detected but stellar mass is) are shown as blue arrows, connected by a dot-dashed line. Right: Surface brightness profiles for Hα NB (black) and r-band emission (red), along with the Σ_* profile (blue). The dashed black profile shows the detection limit for the Hα profile. In both panels, the green vertical line shows the median SF disc edge, R_sSFR, and the shaded green band the uncertainty range based on the 16^th and 84^th percentiles computed using a Monte Carlo simulation with 1000 iterations. The vertical black line shows the expected edge, R_norm, of the galaxy and the shaded grey band uncertainty range based on the 16^th and 84^th percentiles of the Monte Carlo simulation.