Fitting results from galario for the synthetic observations of the disk around sink 57, seen in the xy projection. Left: observed (black dots with error bars) and modelled (red curve) visibilities in real (top) and imaginary parts (lower panel) as a function of the baseline (in kλ) for three configurations C43-3 (upper), C43-4 (middle), and C43-6 (lower). Right: corner plots of the galario fittings of the visibility data with the disk and envelope model. The top sub-panels show the 1D histograms of the free parameters from the MCMC chains. The rest of the panels are the 2D histograms between each pair of parameters.