What aspect of a dead disk galaxy can stubbornly persist even after star formation physics ceases?

Answer

Its rotational structure (morphology).

A dead disk galaxy demonstrates that while the physics of star formation has stopped, the physical shape, or morphology, inherited from its dynamic past can remain intact.

What aspect of a dead disk galaxy can stubbornly persist even after star formation physics ceases?

#Videos

NASA finds dead spiral galaxy - YouTube

JWST Finds a Bizarre Galaxy In Early Universe That Appears Dead

Spacegalaxyastronomycosmosdead galaxy