What often leads to the chaotic structure and vigorous star formation seen in irregular galaxies?

Answer

Gravitational disturbances, such as close encounters or mergers with other galaxies

Irregular galaxies frequently exhibit vigorous star formation because they lack a regular structure, often resulting from gravitational disturbances like mergers, which can compress existing gas clouds.

What often leads to the chaotic structure and vigorous star formation seen in irregular galaxies?
galaxiesastronomygasdust