Structural and SED-derived physical properties of QGs from hCOSMOS. Normalised distributions of values for various physical quantities are displayed for two morphological categories: quiescent spirals and ellipticals (sQGs and eQGs; yellow and dark cyan colours, respectively). The first row delineates properties obtained from the Hectospec spectroscopy. The redshift, D_n4000, and gas metallicity (i.e. oxygen abundance) are expressed as 12 + log(O/H). The second row displays some of the main structural properties derived from HST images observed via the F814W filter (Gini index, concentration, and effective radius in kiloparsecs) from the catalogue of Cassata et al. (2007). The third and fourth rows show various physical properties estimated from multi-wavelength SED modelling of our QGs with the code CIGALE. These are, from the upper left to lower right: log(M_⋆/M_⊙), log(Age/yr), log(t_quench/Myr), log(M_dust/M_⊙), T_dust, and log(L_dust/L_⊙).