Modeling results and observations of the 690 GHz continuum of RX J1615-3255. The panel shows the intensity cuts through the major (bottom) and minor (top) axis of the continuum image, zoomed in on the lowest flux levels (<20σ). The observations are plotted in black with the 1σ errors in gray. In red and blue we present the models with and without a dust gap between 110 and 130 AU. The dotted and dashed lines indicate the zero flux and 3σ limits, respectively.