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

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Date
06/2017
Author
Hughes, T. M.
Ibar, E.
Villanueva, V.
Aravena, M.
Baes, M.
Bourne, N.
Cooray, A.
Davies, L. J. M.
Driver, S.
Dunne, L.
Dye, S.
Eales, S.
Furlanetto, C.
Herrera-Camus, R.
Ivison, R. J.
Kampen, E. van
Lara-López, M. A.
Maddox, S.
Michałowski, M. J.
Oteo, I.
Smith, D.
Smith, M. W. L.
Valiante, E.
Werf, P. van der
Viaene, S.
Xue, Y. Q.
Keywords
ISM: lines and bands
Galaxies: ISM
Submillimetre: galaxies
QB Astronomy
QC Physics
3rd-DAS
Metadata
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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.
Citation
Hughes , T M , Ibar , E , Villanueva , V , Aravena , M , Baes , M , Bourne , N , Cooray , A , Davies , L J M , Driver , S , Dunne , L , Dye , S , Eales , S , Furlanetto , C , Herrera-Camus , R , Ivison , R J , Kampen , E V , Lara-López , M A , Maddox , S , Michałowski , M J , Oteo , I , Smith , D , Smith , M W L , Valiante , E , Werf , P V D , Viaene , S & Xue , Y Q 2017 , ' VALES - III. The calibration between the dust continuum and interstellar gas content of star-forming galaxies ' , Monthly Notices of the Royal Astronomical Society , vol. 468 , no. 1 , pp. L103-L107 . https://doi.org/10.1093/mnrasl/slx033
Publication
Monthly Notices of the Royal Astronomical Society
Status
Peer reviewed
DOI
https://doi.org/10.1093/mnrasl/slx033
ISSN
0035-8711
Type
Journal article
Rights
© 2017, the Author(s). This work has been made available online in accordance with the publisher’s policies. This is the final published version of the work, which was originally published at https://doi.org/10.1093/mnrasl/slx033
Collections
  • University of St Andrews Research
URL
http://arxiv.org/abs/1702.07350v1
URI
http://hdl.handle.net/10023/12524

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