first submission 302527164 Assigned ID: 4099 ----- Attempting Submission 1 (Tue May 23 13:57:41 GMT 2023) ----- With the advent of new, fast radiative transfer solvers, the full cosmological history of dwarf galaxies can be simulated at high resolution. We propose to conduct a campaign of simulations with a novel, efficient method for radiative transfer to uncover the impact of radiation feedback on dwarf galaxies. We aim to answer three key questions by tying new simulations to HST observations: (1) How does radiation feedback change the star formation histories in dwarf galaxies? (2) How does radiation feedback change the DM response to SN feedback? (3) How does radiation feedback alter the baryon cycle and the state of the ISM & CGM? Our proposal will result in a publicly available database for the new simulations, which contains mock HST CMDs, simulated SFHs and mock CGM absorption maps available to both constrain both observations and future simulations. PI-Munshi is an expert in simulating dwarf galaxies, studying their star formation histories and their observational properties. Munshi has already run the simulations of varying supernova feedback which are the basis for comparison to the simulations in this proposal. Munshi is also an expert in making observational comparisons between simulations and observations and is trained in creating the mock CMDs as proposed. Munshi's publication record clearly demonstrates she is a leader in the theoretical study of dwarf galaxies. co-PI Keller is an expert in the development and use of SPH simulations of galaxy formation, and in the modelling of stellar feedback. PI Keller is a core developer of the simulation code ChaNGa, which will be used in this project, and is involved in the development of the radiative transfer method that will be applied in this project. He has published, as lead author, 8 studies directly studying the impact of stellar feedback using galaxy simulations, with a focus on the impact on the ISM, CGM, and stellar populations in galaxies, and has recently had a study accepted for publication directly comparing simulation predictions to JWST observations of high-redshift galaxy formation. Galaxies 0 Regular false false false true false false SUPPORTED