Fig. 4.
Distributions in the log(Re)−log(M*) plane for normal ETGs (black filled circles), BCGs (green filled circles), and clusters of galaxies (blue filled circles) from our WINGS samples. The red small dots show the data of the Illustris simulations for galaxies at z = 0. The solid line is the fit of the galaxies and cluster sample, while the dashed line is the slope predicted from the virial theorem for a possible ZoE.
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