The red histogram show the cumulative distribution of the difference between the original stellar masses and the ones obtained with a “noisy” catalogues (redshifts and magnitudes are scattered according to the expected errors) at ℳ > 10^10.5ℳ_⊙. The dotted, short-dashed and long-dashed lines correspond to a Gaussian distribution with σ = 0.04(1 + z), a Lorentzian distribution with τ = 0.04(1 + z), and the product of a Lorentzian and a Gaussian distributions with τ = 0.04(1 + z) and σ = 0.5.