  We map the planetary wake associated with the embedded protoplanet creating
the CO kink in the disk of HD~163296. We show that the wake can be traced by a
series of correlated perturbations in the peak velocity map. The sign change of
the perturbations across the disk major axis confirm that the wake induces
predominantly radial motion, as predicted by models of planet-disk interaction.
These results provide the first direct confirmation of planet wakes generated
by Lindblad resonances. Mapping the wake provides a constraint on the disk
aspect ratio, which is required to measure the mass of the planet.

Earth and Planetary Astrophysics