Relative importance and efficiencies of stellar feedback mechanisms

Determine the relative importance and efficiencies of stellar winds, ionizing radiation, and supernova explosions in regulating star formation and dispersing gas in collapsing giant molecular clouds across a broad range of cloud masses, radii, and metallicities.

Background

The paper investigates how mechanical feedback from young stars (winds and supernovae) interacts with collapsing molecular clouds over a wide parameter space, emphasizing the role of metallicity. Despite recent multi-physics simulations and observational advances, disentangling the relative impact of different feedback channels remains challenging because they act simultaneously and depend sensitively on environment.

The authors focus here on winds and supernovae, deferring radiation feedback to future work. They explicitly note that many questions remain open regarding which mechanisms dominate under which conditions, motivating their controlled 1D modeling as a step toward clarifying the division of roles among feedback processes.