Fig. 4.

Results of CONT model analysis. Luminosity- and mass-weighted mean stellar age (first and second row), and metallicity (third and fourth row) residuals for FADO (blue line), STARLIGHT (red line), STECKMAP (green line) as a function of the galaxy age. Luminosity-weighted quantities for FADO and STARLIGHT are obtained considering the best-fitting populations vector at 4020 Å. On top of each panel the S/N of the input REBETIKO spectrum are reported.
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