The Panchromatic Hubble Andromeda Treasury: Triangulum Extended Region (PHATTER). VI. The High-mass Stellar Initial Mass Function of M33

Wainer, Tobin M.; Williams, Benjamin F.; Johnson, L. Clifton; Weisz, Daniel R.; Dalcanton, Julianne J.; Seth, Anil C.; Dolphin, Andrew; Durbin, Meredith J.; Bell, Eric F.; Chen, Zhuo; Guhathakurta, Puragra; Koch, Eric W.; Lindberg, Christina W.; Rosolowsky, Erik; Sandstrom, Karin M.; Skillman, Evan D.; Smercina, Adam; TorresVillanueva, Estephani E.

doi:10.3847/1538-3881/ad5a6e

The Panchromatic Hubble Andromeda Treasury: Triangulum Extended Region (PHATTER). VI. The High-mass Stellar Initial Mass Function of M33

We measure the high-mass stellar initial mass function (IMF) from resolved stars in M33 young stellar clusters. Leveraging the Hubble Space Telescope’s high resolving power, we fully model the IMF probabilistically. We first model the optical color–magnitude diagram of each cluster to constrain i…