What process describes the outcome when two disk galaxies of roughly equal mass collide?

Answer

A major merger that randomizes orbits and creates a gas-poor elliptical galaxy

A major merger, involving two disk galaxies of roughly equal mass, is highly disruptive. The violent gravitational interaction randomizes the orbits of stars and gas, destroying the disk structure and resulting in a gas-poor elliptical galaxy.

What process describes the outcome when two disk galaxies of roughly equal mass collide?
galaxiesastronomystructureformationshape