Star Clusters Around Local Group Dwarf Galaxy NGC 6822: Subaru + Euclid Imaging and Keck Spectroscopy

Star clusters are a useful tool to study galaxy formation and stellar evolution. We present work on globular and extended clusters around the Local Group dwarf galaxy NGC 6822. We use deep, wide-field imaging from Subaru Hyper Suprime-Cam (HSC) and the Euclid Space Telescope as a preview of the data quality expected from the Vera C. Rubin Observatory and the Roman Space Telescope. We analyzed Keck Cosmic Web Imager (KCWI) spectroscopy of these clusters and measured radial velocities, ages (young and old), as well as metallicities. These results provide unique insights into the dynamical evolution of the galaxy and its star formation history.