SFH parameters as a function of redshift, with (blue shaded contours) and without (black line contours) including the Hδ and D_n4000 indices in the SED fitting, for sources in the galaxy reference catalogue. Top panel: stellar age in million years. When the two indices are not included in the fitting process, the distribution highly peaks at the lowest stellar age value allowed by the parametric grid (see Table 1). This is at odds with the redshift distribution of the galaxies. When the two indices are included in the fitting process, the distribution of stellar ages appears flatter and similar to the redshift distribution. Middle panel: e-folding time of the main stellar population in million years. When the SED fitting is done without using the information from Hδ and D_n4000, for the majority of the galaxies the e-folding time has values of ≥500 Myr. The opposite trend is observed when Hδ and D_n4000 are included in the fitting process. In this case, most of the galaxies have short e-folding times (≤200 Myr). Bottom panel: mass fraction of the late burst population. Inclusion of the two indices does not significantly affect the calculated values of this parameter.