Qϕ, J-band (linearly) polarized intensity image of the disk of UX Tau A, shown in logarithmic scale. The intensity scale is in arbitrary detector units, levels below 1 (i.e., ∼2.5 times the rms noise level at ≥1″) are set to black. The gray circle traces the 185 mas coronagraphic mask. The continuum ring detected by ALMA (see Fig. B.2, left insert) is shown in black contours traced at 60% of the ALMA continuum peak level.