Table 3.
Parameters and evidence resulting from the Bayesian kinematic analysis of the main sample.
| Model |
 |
σv | k | Bayes factor |
|---|---|---|---|---|
| (km s−1) | (km s−1) | (km s−1 arcmin−1) | ln(Brot, disp) | |
| Linear rotation (HI) | −230.9 ± 0.7 | 11.2 ± 0.4 | 1.1 ± 0.3 | 4.5 |
| Linear rotation (optical) | −232.2 ± 0.6 | 11.2 ± 0.4 | 1.2 ± 0.3 | 3.5 |
| Dispersion only | −233.3 ± 0.5 | 11.3 ± 0.4 |
Notes. The number of initial targets was Nin = 751, while that of the probable members with PMj > 0.95 was NP = 746. The reported values of the kinematic parameters represent the median of the corresponding marginalised posterior distributions, with 1σ errors set as the confidence intervals around the central value enclosing 68% of each distributions. The values in the row labelled (HI) or (optical) were determined assuming the central coordinates and orientation of the kinematic major axis of the HI component or the stellar component, respectively.
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