Caption: A Hubble Space Telescope (HST) image of galaxy Arp 220 in constellation Serpens. The radio lobes are a false color artist's conception.
Features:
The SMBH and its accretion disk constitute an active galaxy nucleus (AGN). A galaxy with AGN is called an active galaxy.
The heating causes all the gas in the galaxy to be too hot to lose pressure support and and collapse into star formation regions
So star formation turns off and the galaxy becomes a quenched galaxy.
The upshot is that most, maybe nearly all, quenched galaxy by golden mass quenching are giant elliptical galaxies.
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