The Panchromatic Hubble Andromeda Treasury: Triangulum Extended Region (PHATTER). III. The Mass Function of Young Star Clusters in M33

Abstract

We measure the star cluster mass function for the Local Group galaxy M33. We use the catalog of stellar clusters selected from the Panchromatic Hubble Andromeda Treasury: Triangulum Extended Region (PHATTER) survey. We analyze 711 clusters in M33 with $7.0<\log (Age/yr)<8.5$, and log($M/M_{\odot }$) $>$ 3.0 as determined from color-magnitude diagram fits to individual stars. The M33 cluster mass function is best described by a Schechter function with power law slope $\alpha =-2.06_{-0.13}^{+0.14}$, and truncation mass log($M_c/M_{\odot }$) $=4.24_{-0.13}^{+0.16}$. The data show strong evidence for a high-mass truncation, thus strongly favoring a Schechter function fit over a pure power law. M33's truncation mass is consistent with the previously identified linear trend between $M_c$, and star formation rate surface density, \SigSFR. We also explore the effect that individual cluster mass uncertainties have on derived mass function parameters, and find evidence to suggest that large cluster mass uncertainties have the potential to bias the truncation mass of fitted mass functions on the one sigma level.

18 pages, 15 figures, 1 table, Accepted to ApJ (February 2, 2022)

References in corpus (17)

• Some Aspects of Measurement Error in Linear Regression of Astronomical Data
• The ACS Nearby Galaxy Survey Treasury IX. Constraining asymptotic giant branch evolution with old metal-poor galaxies
• The ACS Virgo Cluster Survey. XII. The Luminosity Function of Globular Clusters in Early Type Galaxies
• Legacy ExtraGalactic UV Survey (LEGUS) with The Hubble Space Telescope. I. Survey Description
• The mass function of young star clusters in spiral galaxies
• CHAOS I: Direct Chemical Abundances for HII Regions in NGC 628
• Probing the role of the galactic environment in the formation of stellar clusters; using M83 as a test bench
• A model for the formation of stellar associations and clusters from giant molecular clouds
• Spitzer Local Volume Legacy (LVL) SEDs and Physical Properties
• Star cluster formation in the most extreme environments: Insights from the HiPEEC survey
• The Panchromatic Hubble Andromeda Treasury: Triangulum Extended Region (PHATTER) I. Ultraviolet to Infrared Photometry of 22 Million Stars in M33
• The Young Star Cluster population of M51 with LEGUS: I. A comprehensive study of cluster formation and evolution
• Clustering of Local Group distances: publication bias or correlated measurements? II. M31 and beyond
• Star Cluster Catalogs for the LEGUS Dwarf Galaxies
• LEGUS and Halpha-LEGUS Observations of Star Clusters in NGC 4449: Improved Ages and the Fraction of Light in Clusters as a Function of Age
• Looking for obscured young star clusters in NCG 1313
• On the origin of the Schechter-like mass function of young star clusters in disk galaxies

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