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Table 3

Summary of radial substructures derived from azimuthally averaged residuals for the disc of MWC 480.

Radius Dust(a) Vertical(b) Δυϕ Tb Lw Notes
76 Warm gas gap, detected in kinematics and line widths of all tracers.
149 / /+/ ↓↓ / Strong vertical temperature gradient.

98 / Θ Cold pressure bump detected in kinematics, leading to dust ring. Enhanced line broadening in all tracers indicative of gas over-density.
165 / Θ Cold pressure bump detected in kinematics, leading to dust ring. Enhanced line broadening in all tracers indicative of gas over-density.

125 / / Warm gas gap, detected in kinematics and line widths of all tracers.
200 / / +/+ / Warm, shallow pressure minimum, mainly seen in 12CO kinematics.
245 / Θ ↓↓/ // Cold gas pressure bump possibly driven by density enhancement.
360 / ↓↓/ ––/ // / Shallow pressure bump, mainly seen in 12CO kinematics.

Notes. Red and blue arrows highlight peaks and troughs, respectively. Red pluses and blue minuses refer to positive and negative velocity gradients, indicative of radial gradients in the gas pressure. A circled plus/minus, or double-lined arrow, means that all tracers agree with the same signature, otherwise, each symbol corresponds to 12CO,13CO and C18O, from left to right. (a)The reference radii are the centres of dust gaps and rings reported in mm wavelengths by Law et al. (2021a) (unless indicated otherwise). (b)Vertical modulations from Paneque-Carreño et al. (2023) are also shown for comparison. Other interesting features found at different radial locations are grouped in the third row of the table.

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