Posterior distribution of the parameters from the white-light-curve fitting of CoRoT-1b. The contours indicate 1- to 3-σ credible intervals. The parameters from left to right are R_p/R_s: planet-to-star radius ratio; α/R_s: orbital semimajor axis relative to star radius; i: orbital inclination, T_c: observed central transit time subtracting the predicted central transit time (BJD_TDB); u₁ and u₂: quadratic limb-darkening coefficients; : variance of the GP jitter term; : variance of the GP kernel function; ℓ_t and ℓ_w: length scales of the input variables (the time vector and the FWHM of the PSF).