u-v radial profile of measured SMA complex-valued visibility function (blue error bars), at the phase center of the observations (corresponding to the location of star GJ322). In orange is a model of a face-on belt with a Gaussian radial surface density distribution, with ~3.5″ radius, ~1.0″ width, and ~1 mJy total flux density, showing that the offset peak seen in Fig. B.1 does not strongly rule out the presence of a belt around GJ322.