The [C ii] emission as a molecular gas mass tracer in galaxies at low and high redshifts
- Zanella, A.
- Daddi, Emanuele
- Magdis, G.
- Diaz Santos, T.
- Cormier, D.
- Liu, D.
- Cibinel, A.
- Gobat, R.
- Dickinson, M.
- Sargent, M.
- Popping, G.
- Madden, S. C.
- Béthermin, M.
- Hughes, T. M.
- Valentino, F.
- Rujopakarn, W.
- Pannella, M.
- Bournaud, F.
- Walter, F.
- Wang, T.
- Elbaz, D.
- Coogan, R. T.
- Daddi, A
- Diaz Santos, A
- Cormier, A
- Liu, A
- Gobat, A
- Dickinson, A
- Sargent, A
- Popping, A.
- Madden, A
- Bethermin, A
- Hughes, A
- Valentino, D
- Rujopakarn, A
- Pannella, G
- Bournaud, A
- Walter, A.
- Wang, A
- Elbaz, A.
- Coogan, A
DOIAbstract
International audienceWe present ALMA Band 9 observations of the [C II]158 μm emission for a sample of 10 main-sequence galaxies at redshift z ˜ 2, with typical stellar masses (log M⋆/M⊙ ˜ 10.0-10.9) and star formation rates (˜35-115 M⊙ yr-1). Given the strong and well-understood evolution of the interstellar medium from the present to z = 2, we investigate the behaviour of the [C II] emission and empirically identify its primary driver. We detect [C II] from six galaxies (four secure and two tentative) and estimate ensemble averages including non-detections. The [C II]-to-infrared luminosity ratio ([C II]/LIR) of our sample is similar to that of local main-sequence galaxies (˜2 × 10-3), and ˜10 times higher than that of starbursts. The [C ...
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