Surveying Nearby Galaxies with Roman

Ben Williams
2021 Zenodo  
I will discuss how the Nearby Galaxies Science Investigation Team (WINGS) is working to optimize the impact of the Roman Space Telescope on the study of nearby galaxies. Roman will be capable of mapping galaxy halo structures down to extremely faint surface brightness limits using individual stars. The resulting maps of stellar halos and accreting dwarf companions will provide stringent tests of galaxy formation and dark matter models on galactic (and even sub-galactic) scales. Roman's maps of
more » ... alaxy halos will simultaneously produce photometry for billions of stars in the main bodies of galaxies within 10 Mpc. These data will transform studies of star formation histories that track stellar mass growth as a function of time and position within a galaxy. They also will constrain critical stellar evolution models of the near-infrared bright, rapidly evolving stars that can contribute significantly to the integrated light of galaxies in the near-infrared. Thus, with Roman we can derive the detailed formation and evolution of stellar halos, reconstruct the complete history of star formation in the nearby universe, and put crucial constraints on the theoretical models used to interpret near-infrared extragalactic observations.
doi:10.5281/zenodo.4432847 fatcat:mixnhx2vavedjktqxh3jikayuq