Incidence of the RV measurements on the system-parameter PPD estimated using complex brightness models that suggest a non-zero eccentricity from the Spitzer/IRAC 8-μm photometry (see Figs. 10b and  6b). a), b) Marginal PPDs (68%- and 95%-confidence intervals) of and for the Γ_SH,3 and the Γ₂ brightness models, respectively. Conceptually these correspond to the marginalized product of the PPDs estimated using solely the photometry (see Figs. 10b and  6b) and using solely the RV data (Fig. 14a). In particular, these highlight that the solutions involving  ≳  0.15 are strongly rejected by HD 189733’s RV data, leading to a redistribution of the probability density. c), d) Marginal PPDs of ρ_⋆ and for the Γ_SH,3 and Γ₂ brightness models, respectively. These show the impact of RV data in the context of the e-b-ρ_⋆-BD correlation (see Sect. 5.2.1); by rejecting the solutions involving  ≳  0.15, HD 189733’s RV data favors solutions consistent with the inferences obtained with less complex brightness models (see Fig. 6). This emphasizes the necessity of global approaches to consistently probe the highly-correlated parameter space of exoplanetary data.