Overview of the radial profiles of light-weighted ages (left-hand panel), metallicities (centre panel), and [α/Fe] enhancements (right-hand panel) of the non-star-forming subsample. Using the galactocentric radius, the data is binned in radial steps of 0.2 R_kin and the median stellar population properties displayed. The vertical dashed line highlights the kinematic radius of the nuclear discs. The profiles are vertically offset by 3 Gyr for ages, and 0.4 dex and 0.1 dex for metallicities and [α/Fe] abundances, according to the values measured in the innermost bin. We note that NGC 1291 is not included in this figure, as no kinematic radius is available for this galaxy. Unbinned radial profiles without any vertical offset are provided in Appendix C.