VALES - III. The calibration between the dust continuum and interstellar gas content of star-forming galaxies

T. M. Hughes, E. Ibar, V. Villanueva, M. Aravena, M. Baes, N. Bourne, A. Cooray, L. J. M. Davies, S. Driver, L. Dunne, S. Dye, S. Eales, C. Furlanetto, R. Herrera-Camus, R. J. Ivison, E. van Kampen, M. A. Lara-López, S. Maddox, M. J. Michałowski, I. OteoD. Smith, M. W. L. Smith, E. Valiante, P. van der Werf, S. Viaene, Y. Q. Xue

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36 Citations (Scopus)

Abstract

We present the calibration between the dust continuum luminosity and interstellar gas content obtained from the Valparaíso ALMA Line Emission Survey (VALES) sample of 67 main-sequence star-forming galaxies at 0.02 < z < 0.35. We use CO(1–0) observations from the Atacama Large Millimetre/submillimetre Array to trace the molecular gas mass, MH2, and estimate the rest-frame monochromatic luminosity at 850 μm, Lν850, by extrapolating the dust continuum from magphys modelling of the far-ultraviolet to submillimetre spectral energy distribution sampled by the Galaxy And Mass Assembly survey. Adopting αCO = 6.5 (K km s−1 pc2)−1, the average ratio of Lν850/MH2 = (6.4 ± 1.4)× 1019 erg s−1 Hz−1 M−1⊙, in excellent agreement with literature values. We obtain a linear fit of log10(MH2/M⊙)=(0.92±0.02)log10(Lν850/ergs−1Hz−1)−(17.31±0.59). We provide relations between Lν850, MH2 and MISM when combining the VALES and literature samples, and adopting a Galactic αCO value.
Original languageEnglish
Pages (from-to)L103-L107
JournalMonthly Notices of the Royal Astronomical Society
Volume468
Issue number1
Early online date27 Feb 2017
DOIs
Publication statusPublished - Jun 2017

Keywords

  • ISM: lines and bands
  • Galaxies: ISM
  • Submillimetre: galaxies

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  • Herschel ATLAS ( H-ATLAS): Data Release 1

    Bourne, N. (Creator), Dunne, L. (Creator), Maddox (S J Maddox), S. J. (Creator), Dye, S. (Creator), Furlanetto (C Furlanetto), C. (Creator), Hoyos, C. (Creator), Smith, D. J. B. (Creator), Eales, S. (Creator), Smith, M. W. L. (Creator), Valiante, E. (Creator), Alpaslan, M. (Creator), Andrae, E. (Creator), Baldry (I K Baldry), I. K. (Creator), Cluver, M. E. (Creator), Cooray, A. (Creator), Driver, S. P. (Creator), Dunlop, J. S. (Creator), Grootes, M. W. (Creator), Ivison, R. J. (Creator), Jarrett, T. H. (Creator), Liske, J. (Creator), Madore, B. F. (Creator), Popescu (C C Popescu), C. C. (Creator), Robotham, A. G. (Creator), Rowlands, K. E. (Creator), Seibert, M. (Creator), Thompson, M. A. (Creator), Tuffs (R J Tuffs), R. J. (Creator), Viaene, S. (Creator) & Wright, A. H. (Creator), Herschel ATLAS, 21 Oct 2016

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