ALMA continuum emission maps at 261.264 GHz. Left and middle: continuum maps with 20 and 10 mas restoring beams, respectively (Sect. 2). Right: continuum map with 20 mas restoring beam after fitting and subtracting a point source model that is located at the position marked by the star-like symbol (see Sect. 3). The white ellipse represents the size and orientation of the extended disk model that best fits the emission in this map. We note the offset between the position of the point-like continuum source (star-like symbol at J2000, RA = 07^h42^m 16.91543 Dec = −14°42′50″.0691) and the center of the disk (cross at J2000, RA = 07^h42^m16^s.91500 and Dec = -14°42′50″.0716). In all three panels, the level contours are 10^{(−3.77+(i−1)}*^0.2) Jy beam⁻¹, i = 1 to 11 by 1 and the shaded circular areas at the bottom-left corner of the maps represent the half-power-beam-width (HPBW).