What kind of internal motion characterizes Elliptical galaxies post-merger?

Largely random velocity dispersion

The internal kinematic structure of elliptical galaxies is fundamentally different from that of spirals due to their violent formation history. Unlike spirals, which maintain a relatively ordered, rotating disk that helps settle gas into thin planes, ellipticals possess a velocity dispersion that is largely random. This disordered internal motion means that any small pockets of remaining gas are significantly less likely to settle down, collect, and form the dense, stable clouds necessary to overcome internal pressure and undergo gravitational collapse to initiate star formation. The structural disorganization actively works against the conditions required for stellar birth.