What evolutionary process is noted as a significant driver for transforming spiral galaxies into ellipticals?

Answer

Mergers

Our understanding of galaxy evolution points to mergers being a significant driver for transforming spirals into ellipticals, which can sometimes trigger a burst of star formation before the gas is exhausted.

What evolutionary process is noted as a significant driver for transforming spiral galaxies into ellipticals?
galaxyastronomytypestarstellar death