λ_Re–ϵ relation as a function of location in the star-formation rate versus total stellar mass (M_⋆) relation for the CALIFA galaxies. Each panel shows the complete sample highlighting in color the ones belonging to each specific SFR–M_⋆ bin. The number in each subpanel gives the -weighted λ_Re average for the highlighted galaxies in that bin. The dark gray dashed line in the SFR versus M_⋆ on the right marks the division between the main star-forming sequence and quiescent galaxies from Renzini & Peng (2015).