¹²CO J = 3–2 emission from the AB Aur disk. Left: integrated intensity (moment 0) map. Right: intensity-weighted velocity (moment 1) map. The star symbol marks the stellar position, the ellipse south of the star marks the expected location of AB Aur b from B. P. Bowler et al. (2025), and the synthesized beam is shown in the lower-left corner of each panel. Open symbols mark the candidate planets within the field (Section 2): circles for pointlike emission sources and triangles for inferred dynamical perturbers, following the classification of J. Speedie et al. (2024). CO gas fills the continuum cavity and shows an inner spiral substructure and a clear disk rotation pattern; the dark patches around the star are caused by spatial filtering of extended emission at velocities near v_sys ≈ 5.85 km s⁻¹ (Y.-W. Tang et al. 2017).