Moment-zero maps for three different planet masses (columns) located at three different semi-major axes (rows). We show the maps issued from RADMC-3D and CASA. The disk’s mass is 10⁻³ M_⊕ of CO and located at 40 pc. The dashed red lines show the gap edges in the radiative transfer outputs. When the planet is located too close to the star (10 AU), the gap is hardly distinguishable given our ALMA resolution (beam of 0.13″). However, it is observed when the planet is > 50 AU and is more easily visible for m_p>0.5 M_J.