ALMA Band 6 continuum emission for the observed targets. The stellar position is marked with a black plus sign. In the case of HD 31305, the position of the primary component (HD 31305 A) is shown by a white plus sign, while the companion star (HD 31305 B) is marked by a black diamond. For HD 131960 the visibility data are tapered by a Gaussian with a FWHM of 1″. At the bottom left of each panel the filled white ellipse shows the beam size. The length of the horizontal black bars corresponds to 100 au. The color bar units are mJy beam⁻¹.