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

Hughes, T. M., Ibar, E., Villanueva, V., Aravena, M., Baes, M., Bourne, N., Cooray, A., Davies, L. J. M., Driver, S., Dunne, Loretta ORCID: https://orcid.org/0000-0001-9880-2543, Dye, S., Eales, Stephen ORCID: https://orcid.org/0000-0002-7394-426X, Furlanetto, C., Herrera-Camus, R., Ivison, R. J., van Kampen, E., Lara-López, M. A., Maddox, Steve ORCID: https://orcid.org/0000-0001-5549-195X, Micha?owski, M. J., Oteo, I., Smith, D., Smith, Matthew ORCID: https://orcid.org/0000-0002-3532-6970, Valiante, Elisabetta, van der Werf, P., Viaene, S. and 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: Letters 468 (1) , L103-L107. 10.1093/mnrasl/slx033

Preview

PDF - Published Version Download (384kB) | Preview

Abstract

We present the calibration between the dust continuum luminosity and interstellar gas content obtained from the Valpara\'{i}so ALMA Line Emission Survey (VALES) sample of 67 main-sequence star-forming galaxies at 0.02< <0.35. We use CO(1-0) observations from the Atacama Large Millimetre/submillimetre Array (ALMA) to trace the molecular gas mass, , and estimate the rest-frame monochromatic luminosity at 850 m, , by extrapolating the dust continuum from MAGPHYS modelling of the far-ultraviolet to submillimetre spectral energy distribution sampled by the Galaxy And Mass Assembly (GAMA) survey. Adopting = 6.5 (K km s pc ) , the average ratio of = (6.4 1.4) erg s Hz , in excellent agreement with literature values. We obtain a linear fit of ( ) = (0.92 0.02) ( /erg s Hz )-(17.31 0.59). We provide relations between , and when combining the VALES and literature samples, and adopting a Galactic value. /MH2 = (6.4 ± 1.4)× 1019 erg s−1 Hz−1 M −1⊙ ⊙−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) log10⁡(MH2/M⊙)=(0.92±0.02)log10⁡(Lν850/ergs−1Hz−1)−(17.31±0.59) . We provide relations between Lν850 Lν850 , MH2 and MISM when combining the VALES and literature samples, and adopting a Galactic αCO value.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Physics and Astronomy
Subjects:	Q Science > QB Astronomy
Publisher:	Oxford University Press
ISSN:	1745-3925
Date of First Compliant Deposit:	14 July 2017
Date of Acceptance:	23 February 2017
Last Modified:	05 May 2023 02:48
URI:	https://orca.cardiff.ac.uk/id/eprint/102406

Citation Data

Cited 33 times in Scopus. View in Scopus. Powered By Scopus® Data

Actions (repository staff only)

Edit Item