Volker Heesen on Twitter: "What is now new is the clear connection with the radio spectral index. More massive galaxies (higher mass, SFR, size, rotation speed) have steeper radio spectra, so that
SFR RadioGalaxy
SFR Radiogalaxy live hören — Webradio | Online Radio Box
Galaxies | Free Full-Text | Radio Galaxy Classification: #Tags, Not Boxes