2D contours and 1D histograms of the Monte Carlo chains for selected jktebop parameters (bottom left) and of the MCMC chains for the photometrically constrained radial velocity solution (top right; see Sect. 3.2). On the 2D plots, red crosses show the median values and black contours represent 1, 2 and 3σ confidence intervals. On the histograms, solid and dotted grey vertical lines show the median and ± 1σ intervals, respectively.