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Fig. 4.

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Corner plot for the 11-parameter thin-disc model for the object in Fig. 3. Histograms show the posterior probability distributions. The orange lines indicate the prior probability distributions. We generally find good constraints on the kinematic parameters va and σ0, although the turnover radius rt is poorly constrained and degenerate with the rotational velocity. The top right panels show (in blue) the parameters that we derived from the model and are discussed in Sect. 4.

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