Left panel: Reduced χ² values from CIGALE best fit as a function of SMA/R_eff for M49. Solid (dashed) lines indicate fits performed with (without) an UV upturn component, while orange (purple) lines represent fits performed on FUV+optical (FUV+NUV+optical) broadband data. The grey horizontal solid line marks a reduced χ² = 1. Right panel: M49 photometric FUV+NUV+optical SED fitting. Open orange squares are the observed fluxes for the region at SMA/R_eff ∼ 0.05. The blue dashed line is the best model found by CIGALE when the data are fitted with no Upturn models, while the green solid line is the best fit by considering the upturn component. Red filled circles and pink open diamonds are the model fluxes for the upturn and no-upturn models, respectively.