Stellar populations derived from the single and two-component models using pPXF. Upper panel: Mass-weighted stellar populations showing the logarithmic stellar ages in years (lower x axis) and their corresponding values in gigayears (upper x axis), against stellar metallicities of the one-component and the two-component models. The three marker styles represent the three galaxies, while the colours represent the components – blue for the outer component of the double Sérsic model, red for the inner component, and purple for the single Sérsic component. The associated logarithmic error bars are also shown. Lower panel: Same as the upper panel, but with light-weighted stellar populations instead.