Scatter plot of the sum of the masses of the thick disc and the classical bulge (dynamically hot components; ℳ_h) versus the total stellar mass of the galaxy, ℳ_⋆(z = 0), for the 124 galaxies with a fitted thick disc in Comerón et al. (2018). The black continuous line indicates the linear fit to all the data, whereas the continuous grey line indicates the fit to the data points corresponding to galaxies in the Virgo and Fornax clusters only. The dashed grey line indicates a one-to-one relation.