a) Qφ image of the ZIMPOL R′-band data, smoothed with a boxcar of three pixels. No radial scaling is applied. b) Qφ image of the IRDIS/DPI J-band data, without radial scaling. c) Same reduction as shown in panel b), with an inclination (i = 45°) corrected r2 scaling. This panel has the following disk features annotated: The southern ansa of a ring (R1), a full ring R2, a clear dip in the surface brightness (G) and an inner disk structure I1. Panels d)−f) display the Uφ images corresponding to and with the same dynamic range as the Qφ images of panels a)−c) respectively.
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