Detection of molecular gas in a distant submillimetre galaxy at z = 4.76 with Australia Telescope Compact Array
- Coppin, K. E. K.
- Chapman, S. C.
- Smail, Ian
- Swinbank, A. M.
- Walter, F.
- Wardlow, J. L.
- Weiss, A.
- Alexander, D. M.
- Brandt, W. N.
- Dannerbauer, H.
- De Breuck, C.
- Dickinson, M.
- Dunlop, J. S.
- Edge, A. C.
- Emonts, B. H. C.
- Greve, T. R.
- Huynh, M.
- Ivison, R. J.
- Knudsen, K. K.
- Menten, K. M.
- Schinnerer, E.
- van der Werf, P. P.
DOIAbstract
We have detected the CO(2-1) transition from the submillimetre galaxy (SMG) LESSJ033229.4-275619 at z = 4.755 using the new Compact Array Broadband Backend system on the Australian Telescope Compact Array. These data have identified a massive gas reservoir available for star formation for the first time in an SMG at z ~ 5. We use the luminosity and velocity width (full width at half-maximum, FWHM, of ~=160kms-1) of the CO(2-1) line emission to constrain the gas and dynamical mass of Mgas ~= 1.6 × 1010Msolar and Mdyn
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