Open Access

Table B.1

Fitting parameters.

Geometric parameters

Parameter Value Status
(x0, y0) (0,0) Center of the dust ring Verified
7 PA of the disk rotation axis Verified
− 35 Inclination Verified
VLSR (km s−1) 6.40 Systemic velocity Verified
V0 (km s−1) 3.37 Keplerian rotation velocity at 100 au Verified
dV (km s−1) 0.3 Local line width Fixed
H0 24 Scale height at 200 au Verified

Dust ring parameters

Rin (au) 193 Inner radius Fixed
Rout (au) 285 Outer radius Fixed
Kν (cm2 g−1) Abs. coefficient Fixed
T(r) (K) Temperature Fixed
Σ(H2)(r) (cm−2) 5.6 Surface density Fitted

Line parameters

Rin (au) 169 Inner radius Verified
Rknots (au) See results Knot positions Fixed
T(r) (K) See results Temperature law Fitted from CO
Σ((X))(r) (cm−2) See results Molecule X surface density Fitted
Rout(X) See results Outer radius for molecule X Fitted

Notes. Fixed valuesare taken from Dutrey et al. (2014). Verified values were used as fixed parameters in the last fitting step, but as free parameters in intermediate fits to verify their impact.

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