AlFoCS + Fornax3D: Resolved star formation in the Fornax cluster with ALMA and MUSE

N. Zabel*, T. A. Davis, M. Sarzi, Boris Nedelchev, M. Chevance, J. M. Diederik Kruijssen, E. Iodice, M. Baes, G. J. Bendo, E. Maria Corsini, I. De Looze, P. Tim de Zeeuw, D. A. Gadotti, M. Grossi, R. Peletier, F. Pinna, Paolo Serra, F. van de Voort, A. Venhola, S. ViaeneC. Vlahakis

*Corresponding author for this work

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Abstract

We combine data from ALMA and MUSE to study the resolved (∼300 pc scale) star formation relation (star formation rate, SFR, versus molecular gas surface density) in cluster galaxies. Our sample consists of nine Fornax cluster galaxies, including spirals, ellipticals, and dwarfs, covering a stellar mass range of ∼108.8-1011 M⊙. CO(1-0) and extinction corrected Hα were used as tracers for the molecular gas mass and SFR, respectively. We compare our results with Kennicutt and Bigiel et al. Furthermore, we create depletion time maps to reveal small-scale variations in individual galaxies. We explore these further in FCC290, using the 'uncertainty principle for star formation' (Kruijssen & Longmore) to estimate molecular cloud lifetimes, which we find to be short (
Original languageEnglish
Pages (from-to)2155-2182
JournalMonthly Notices of the Royal Astronomical Society
Volume496
Issue number2
DOIs
Publication statusPublished - 1-Jun-2020

Keywords

  • galaxies: evolution
  • galaxies: star formation
  • galaxies: ISM
  • galaxies: clusters: individual: Fornax

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