Azimuthally averaged radial intensity profiles of the deprojected continuum images (lineal scale on the left and logarithmic scale in the center) at each wavelength. Each profile is normalized to the peak. The profiles are obtained from images that are restored with the same beam (50 mas × 34 mas). The error bars include the standard deviation of each elliptical bin divided by the square root of the number of beams spanning the full azimuthal angle at each radial bin. The right panel shows the radial profile of the spectral index taking into account the errors on the radial intensity profiles in addition to 10% of the error due to flux calibration.