articleAstronomy and AstrophysicsJan 8, 2014BRONZE OA

Gas-to-dust mass ratios in local galaxies over a 2 dex metallicity range

ARA. Rémy-RuyerSCS. C. MaddenFGF. GallianoMGM. GalametzTTT. T. Takeuchi

Commissariat à l'Énergie Atomique et aux Énergies Alternatives · Université Paris Cité · +15 more institutions

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Abstract

Aims. The goal of this paper is to analyse the behaviour of the gas-to-dust mass ratio (G/D) of local Universe galaxies over a wide metallicity range. We especially focus on the low-metallicity part of the G/D vs metallicity relation and investigate several explanations for the observed relation and scatter. Methods. We assembled a total of 126 galaxies, covering a 2 dex metallicity range and with 30% of the sample with 12 + log(O/H) 8.0. We homogeneously determined the dust masses with a semi-empirical dust model including submm constraints. The atomic and molecular gas masses have been compiled from the literature. We used two X CO scenarios to estimate the molecular gas mass: the Galactic conversion factor,…

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Authors

20
  • AR
    A. Rémy-RuyerCorresponding
  • SC
    S. C. Madden

    Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Université Paris Cité, Astrophysique, Instrumentation et Modélisation, Institut de Recherche sur les Lois Fondamentales de l'Univers

  • FG
    F. Galliano

    Institut de Recherche sur les Lois Fondamentales de l'Univers, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Astrophysique, Instrumentation et Modélisation, Université Paris Cité

  • MG
    M. Galametz

    University of Cambridge

  • TT
    T. T. Takeuchi

    Nagoya University

Topics & keywords

Topics
Keywords
  • Metallicity
  • Galaxy
  • Star formation
  • Universe
  • Power law
  • Stellar mass
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