Posterior probability distributions of the free parameters in the model, enclosing 68.2%, 95.4%, and 99.7% (i.e. 1, 2, and 3σ) of the total probability. The six free parameters are the binary fraction (f_bin), the fraction of cluster members (f_c), the cluster velocity dispersion (σ_c), the cluster mean velocity (μ_c), the field velocity dispersion (σ_f) and the field mean velocity (μ_f). The different colors refer to the three different single-epoch radial velocity distributions with the same color coding as in Fig. 5. The literature values for these parameters, derived from a proper motion analysis (Platais et al. 2003) and the multi-epoch radial velocity data (Geller et al. 2008; Geller & Mathieu 2011) have been plotted as black dots. If the error bars are given, they have been plotted.