Image Details
Caption: Figure 3.
Eddington-scaled radiative luminosity (left panel) and calcium break (right panel) histograms. FRII-LERGs are similar to FRIs. Both live in old galaxies and are powered by hot accretion flows. FRII-HERGs are more radiatively efficient and show signs of star-forming activity.
© 2021. The Author(s). Published by the American Astronomical Society.