Puzzling Ultra-Diffuse Galaxy Evolution (PUDGE). II. A transformation pathway from ultra-diffuse galaxies to compact dwarfs in galaxy clusters
The episode discusses a paper tracing one hundred seventeen ultra-diffuse galaxies backward to find eight cases where a transient UDG phase preceded falling into a cluster, leading to compact dwarfs. The hosts conclude that the cluster environment drives this transformation by compressing gas, causing intense star formation and rebuilding structure rather than just stripping existing cores.