Skirt intensity map at 12 μm (top), 25 μm (middle), and 60 μm (bottom) for Φ = 2 × 10^-5 (model C_SK_ld). To ease the comparison, the same limits are used for the three bands for the “x” and “y” axes. The angular size and intensity are given for a system at 300 pc. The figure is zoomed on a box 12 000 × 8516 AU² wide.