Radial visibility profiles of cores 1−4 in ISOSS J22478+6357 and cores 1−6 in ISOSS J23053+5953. The azimuthally averaged visibility amplitudes , considering the real and imaginary components, are shown in black. The bottom x-axis shows the uv distance and the top x-axis is converted to the corresponding linear spatial scale. A fit to the data and its uncertainties (±1σ) are shown by the red solid and dashed lines, respectively.