Continuum model results. Continuum visibilities as a function of wavelength along with the best continuum fit in the (u, v) plane. For the V² and CP plots, the absolute value of the fit residuals is shown by dots at the bottom of the plot. Upper left panel: visibility squared V² vs. projected baseline in units of Mλ. Upper right panel: CP vs. the largest projected baseline of each triangle. Lower left panel: halftone image of the circumstellar component resulting from a non-Gaussian Ellipsoid fit with m = 1 azimuthal modulation. The stellar position is shown by a cross symbol. Lower right panel: (u, v) plane of the observations.