Comparison of galaxy properties with and without Hδ and D_n4000 in the fitting process, for sources in the reference catalogue. The top panel compares the SFR calculations of CIGALE with and without the two indices in the SED fitting. The two measurements are in good agreement, indicating that the inclusion of Hδ and D_n4000 does not significantly affect the SFR calculations. The bottom panel presents the comparison of the stellar mass measurements. In this case, inclusion of the two indices in the SED fitting causes a small (by ∼0.2 dex) but systematic increase of M_*. This is more evident for systems that host stars with young populations (D_n4000 < 1.5). Solid black lines present the 1:1 relation.