The tangled warp of the Milky Way | Astronomy & Astrophysics (A&A)

Open Access

Fig. 4.

Quantitative comparison of the four models. We compute a quantity analogous to the chi-squared statistic per degree of freedom, $χ_{ν}^{2}$ $\chi^2_\nu$ , for each model, and plot the distribution of these values for the final 50 000 steps of the MCMC chain. We note that the Classical models perform significantly better than the v_R term.

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