Finding red objects that maintain a spiral structure suggests what about their quenching process?

Answer

Quenching might be gradual, allowing low-level star birth to continue.

Spiral morphology is typically linked to ordered star formation; thus, a red spiral suggests the shutdown process might be slow, permitting some star birth even in the red phase.

Finding red objects that maintain a spiral structure suggests what about their quenching process?
galaxiesastronomyredshift