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

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