Abstract
It is becoming increasingly clear that collisions between galaxies play an important role in galaxy evolution. The ultraluminous infrared galaxies are predominantly powered by enormous star-formation events that are triggered in the last phases of such collisions. These bursts occur just before the galaxies merge to form single elliptical galaxies.
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Genzel, R., Lutz, D. & Tacconi, L. Star formation triggered by galaxy collisions. Nature 395, 859–862 (1998). https://doi.org/10.1038/27597
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DOI: https://doi.org/10.1038/27597
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