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The Panchromatic Hubble Andromeda Treasury: Triangulum Extended Region (PHATTER). IV. Star Cluster Catalog

2022; IOP Publishing; Volume: 938; Issue: 1 Linguagem: Inglês

10.3847/1538-4357/ac8def

1538-4357

L. Clifton Johnson, Tobin M. Wainer, Estephani E. TorresVillanueva, Anil C. Seth, Benjamin F. Williams, Meredith Durbin, Julianne J. Dalcanton, Daniel R. Weisz, Eric F. Bell, Puragra Guhathakurta, Evan D. Skillman, Adam Smercina,

Astrophysics and Star Formation Studies

We construct a catalog of star clusters from Hubble Space Telescope images of the inner disk of the Triangulum Galaxy (M33) using image classifications collected by the Local Group Cluster Search, a citizen science project hosted on the Zooniverse platform. We identify 1214 star clusters within the Hubble Space Telescope imaging footprint of the Panchromatic Hubble Andromeda Treasury: Triangulum Extended Region (PHATTER) survey. Comparing this catalog to existing compilations in the literature, 68% of the clusters are newly identified. The final catalog includes multi-band aperture photometry and fits for cluster properties via integrated light SED fitting. The cluster catalog's 50% completeness limit is ~1500 solar masses at an age of 100 Myr, as derived from comprehensive synthetic cluster tests.