Fits to the disk intensity profile and residuals for three different models. The orange curves in the top panels show 100 profiles drawn randomly from the posterior distributions. The observed profile is shown with a black solid line. The resultant median residual is shown in the bottom panels (solid black line) as well as 1σ dispersion around the median residual (orange shaded area). The gray shaded area corresponds to the 1σ uncertainty of the intensity profile in all panels. Left: Smooth disk profile. Middle: Disk profile with a gap at ∼28 au. The black horizontal segment shows the range of values for the gap radius enclosing 68% of the posterior distribution around the median. Right: Disk profile with a ring at ∼34 au. The black horizontal segment shows the range of values for the ring radius enclosing 68% of the posterior distribution around the median.