"Stirring the ISM with clustered feedback"

Star clusters are the result of extreme star formation. In these dense stellar systems, the energy, mass and radiation released by the massive stars is correlated in space and time, and this clustered feedback regulates the baryonic lifecycle of their host galaxies. However, current modern simulations of galaxy formation lack this critical effect on the evolution of galaxies. In this talk, I will present a novel method to model the influence of individual star clusters on their host galaxy within the hydrodynamical code GIZMO. By employing sink particles that are able to accrete gas, form stars and merge with one another, I can represent stellar clusters built via gas accretion and in-situ star formation, and hierarchical merging. I will demonstrate that this prescription leads to molecular clouds being shorter lived due to more destructive feedback, and I will discuss what physics are required to reproduce the formation of star cluster populations in this scenario.