Normalized major axis intensity profiles. Data in the three bands are represented by the green (band 4), orange (band 6) and blue (band 7) lines. The light shading corresponds to the normalized rms in each band. The beam sizes in the direction of the cut are shown in the left part of each plot as horizontal lines. We indicate the shoulders of Haro 6-5B and Oph 163131 by an arrow. We smoothed the cuts through Tau 042021 by convolving them by a 1-D Gaussian of the beam width, to reduce the noise and make the plot clearer.