Deviations from Keplerian rotation for ¹²CO(3−2) ALMA simulated observations. From left to right: VSI-unstable disk without a planet, VSI-unstable disk with a Saturn-mass planet, and VSI-unstable disk with a Jupiter-mass planet. From top to bottom: predictions for different disk inclinations (i = [5°, 15°, 30°]). The approximated location of the planets is indicated by black circles with the size of the planet’s Hill radius. The gray solid lines indicate the zero velocity contour in the line-of-sight velocity maps. The disk is oriented so that its rotation in the sky is clockwise. The synthesized beam of 84 × 62 mas is shown in the bottom left corner of each panel. The data cubes have a velocity resolution of 100 m s⁻¹, with an rms of 1 mJy beam⁻¹ per channel. In all images the regions of low S/N have been clipped.