Stellar feedback as a research area investigates how energy, momentum, and chemically enriched material injected by stars regulate the formation and evolution of galaxies and the interstellar medium (ISM). It encompasses processes such as photoionization, stellar winds, radiation pressure, and supernova explosions, and their roles in heating, ionizing, and dispersing gas, driving turbulence, launching galactic outflows, and quenching or triggering star formation. The field combines analytical models, high-resolution simulations, and multiwavelength observations to quantify feedback efficiencies, coupling mechanisms to the ISM, and the impact on galaxy scaling relations, metal enrichment, and the broader baryon cycle in cosmological structure formation.
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