Spectral modelling results for the SDSS DR7 spectrum ‘52912-1424-151’ using the spectral synthesis codes FADO and STARLIGHT. Main panel: black, blue and red lines represent the galaxy input spectrum and the best-fit solutions from FADO and STARLIGHT, respectively. Bottom panel: blue and red lines represent the residual spectra of FADO and STARLIGHT, respectively, that result from subtracting the best-fit solutions from the input spectrum. Top right-hand side panels: light fractions L_4020 Å at the normalisation wavelength λ₀ = 4020 Å as a function of the age of the SSPs in the best-fit solution of STARLIGHT (top) and FADO (bottom), with colour coding representing metallicity. Bottom right-hand side panels: mass fractions of the SSPs fitted by STARLIGHT (top) and FADO (bottom). The black vertical ticks on the top of the x-axes represent the age coverage of the adopted stellar library.