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Fig. 3

image

Left panel: radial profile of the r2-scaled Qϕ image after deprojection (with i = 17° and PA = 170°) and azimuthal averaging. The plot indicates the presence of an inner cavity that extends beyond the coronagraph (defined with the vertical dotted line). The error bars are defined as the standard deviation of Qϕ in the corresponding bin, divided by the square root of the number of PSF contained in the bin. Right panel: azimuthal profile of the same image after deprojection and averaging across the Ring #2 and Ring #1 widths (0.12′′ –0.17′′, blue curve; 0.4′′–0.48′′, red curve, respectively). Each curve is normalized to its maximum value, and the red profile is offset by 1.5 for clarity. The error bars are indicated with the shaded region, defined as the standard deviation of Qϕ in the corresponding bin, which reflects the large variations of the surface brightness.

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