Checks on the fitted power-law coefficients. Left: fitted H- and K-band coefficients, α_H and α_K, plotted against the fitted power-law angular diameter, θ_PL. Right: the same coefficients plotted against the fitted visibility scale factor, shown as ﹩{V}_{0}^{2}-1﹩. In both panels, the H-band coefficients are systematically larger than the K-band coefficients, consistent with stronger limb darkening at shorter wavelengths. No strong monotonic dependence of α_H and α_K on either θ_PL or ﹩{V}_{0}^{2}﹩ is evident over the sample, indicating that the measured limb-darkening coefficients are not primarily driven by the overall angular scale or by the visibility normalization term.