CO(1–0) residual emission around NED01 obtained after subtracting the best-fit disk model computed by BBarolo on the Small region (top panels) and on the Medium region (bottom panels). Top left: Map of the CO(1–0) residual emission integrated within v ∈ [170, 220] km s⁻¹ (red contours) and v ∈ [ − 290, −200] km s⁻¹ (blue contours). Contours are plotted at 3, 6, 9, 15, 20σ. The black cross indicates the centre of the best-fit disk model, while the red and blue crosses indicate the centroids of the red- and blueshifted residuals, respectively. Top centre: Spectrum of the CO(1–0) residual emission extracted from the black box (size 9.2″×6.4″) in the left panel. Top right: Imaging of the blueshifted CO(1–0) residual components identified in the spectrum. Bottom left: Map of the CO(1–0) residual emission integrated within v ∈ [170, 220] km s⁻¹ (red contours) and v ∈ [ − 290, −120] km s⁻¹ (blue contours). Bottom centre: Spectrum of the CO(1–0) residual emission extracted from the black box (size of 11.2″×7.2″) in the left panel. Bottom right: Imaging of the blueshifted CO(1–0) spectral components identified in the central panel.