Table 1.
Main parameters of our kinematic model, together with their adopted priors or fixed values.
| Parameter | Prior/Value |
|---|---|
| Sérsic index n | 𝒰[0.5,4.0] |
| Effective radius Re [kpc] | 𝒰[0.3,30] |
Scale height 
|
0.13 × Re |
| Inclination i [deg] | 𝒩tr(itrue,5,±15) |
| Asymptotic velocity vmax [km/s] | 𝒰[10,500] |
| Turnover radius rt [kpc] | 𝒰[0.01,3] |
| Velocity dispersion floor σ0 [km/s] | 𝒰[0,100] |
| Doublet ratio r[OII] | 𝒰[0.35,1.5] |
Notes. Other parameters (position, flux and PA) are assigned broad uniform priors, following the default settings in GalPaK3D. A truncated Gaussian prior is denoted as 𝒩tr(x, y, z), with centre x, parent standard deviation y, and truncation bounds z. A uniform prior over the interval [x,y] is written as 𝒰[x,y].
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