Or in the case of a 2015 result using Hubble observations of large elliptical galaxies, jets from supermassive black holes may regulate star formation in such a way that it keeps going, albeit at a slower rate. (hubble25th.org)
Astronomers have uncovered a unique process for how the universe's largest elliptical galaxies continue making stars long after their peak years of star birth. (sciencedaily.com)
And since modern large elliptical galaxies are simply monstrous galaxies which have mellowed with age, they too must have originated at nexuses in the large scale structure. (sciencedaily.com)