Cumulative distribution of the accretion redshift. Upper left panel: cumulative distribution of the accretion redshift, z_accretion, for galaxies with different spectral types: passive + red post-starbursts (orange), blue post-starburst galaxies + weak emission-line galaxies (green), and strong emission-line galaxies (blue). Other three panels: same distribution separated into high- and low-mass bins (using as a threshold Log(M^*/M_⊙) = 10.4) for the corresponding (colour-coded) galaxy spectral types.