Left: 267 GHz continuum image of GG Tau. The angular resolution is 0.45′′ × 0.25′′ at PA 19°, and the contour spacing is 3.1 mJy/beam (0.47 K, about 2σ). The map is centered at α = 04:32:30.356, δ = 17:31:40.48 (cross, J2000). The GG Tau B binary is located  ~10′′ towards the south, outside the plotted area. Top right: zoom of the inner 1′′ and position of the GG Tau A binary stars as of 2008. Bottom right: best physical ring model (see Table 2 and text). Angular resolution and contour spacing are as in the observations.