Line spectra diagnostics. Selected ¹²CO (black) and ¹³CO (blue) spectra normalized to their peak extracted at disk locations marked in the center map. The map shows the reduced-χ² values (Eq. (2)) from the Gaussian moment map fit to the line profile (see accurate fit in panel 1), masked at 5σ. High uncertainties indicate non-Gaussian-shaped line profiles. The line profiles are split by the υ_LSRK into regions that are either blue-or redshifted to the systemic velocity. Pixels 6-9 that exhibit secondary components in their spectra that are tracing an “exodisk” line component (cyan vertical lines), in addition to the underlying rotating disk component (purple lines). The thin black contours show the IR scattered light as in Fig. 1a, the thick black ellipse highlights the inner edge of the Hα-ring, and the dotted lines highlight the disk’s minor and major axes.