From this, the team has identified approximately five thousand galaxies that match their criteria, i.e. very compact galaxies emitting very intense UV radiation. (sciencedaily.com)
In a survey of ninety thousand radio galaxies, the astronomers identified 1500 compact galaxies among them. (sciencedaily.com)
Such a process is known to occur in planetary systems when close encounters can cast a planet into deep space, and within galaxies when a star can get ejected, but these lonely compact galaxies are the result of slingshots on a supergalactic scale. (sciencemag.org)