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dc.contributor.authorKnudsen, K.
dc.contributor.authorRichard, J.
dc.contributor.authorKneib, J.
dc.contributor.authorJauzac, M.
dc.contributor.authorClement, B.
dc.contributor.authorDrouart, Guillaume
dc.contributor.authorEgami, E.
dc.contributor.authorLindroos, L.
dc.date.accessioned2017-01-30T12:37:01Z
dc.date.available2017-01-30T12:37:01Z
dc.date.created2016-10-10T19:30:20Z
dc.date.issued2016
dc.identifier.citationKnudsen, K. and Richard, J. and Kneib, J. and Jauzac, M. and Clement, B. and Drouart, G. and Egami, E. et al. 2016. [C II] emission in z ~ 6 strongly lensed, star-forming galaxies. Monthly Notices of the Royal Astronomical Society: Letters. 462 (1): pp. L6-L10.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/23388
dc.identifier.doi10.1093/mnrasl/slw114
dc.description.abstract

The far-infrared fine-structure line [C ii] at 1900.5 GHz is known to be one of the brightest cooling lines in local galaxies, and therefore it has been suggested to be an efficient tracer for star formation in very high redshift galaxies. However, recent results for galaxies at z > 6 have yielded numerous non-detections in star-forming galaxies, except for quasars and submillimetre galaxies. We report the results of ALMA observations of two lensed, star-forming galaxies at z = 6.029 and z = 6.703. The galaxy A383-5.1 (star formation rate [SFR] of 3.2 M☉ yr−1 and magnification of μ = 11.4 ± 1.9) shows a line detection with L[CII]=8.9×106 L L☉, making it the lowest L[CII] detection at z > 6. For MS0451-H (SFR = 0.4 M☉ yr−1 and μ = 100 ± 20) we provide an upper limit of L[CII]<3×105 L☉, which is 1 dex below the local SFR–L[CII] relations. The results are consistent with predictions for low-metallicity galaxies at z > 6; however, other effects could also play a role in terms of decreasing L[CII]. The detection of A383-5.1 is encouraging and suggests that detections are possible, but much fainter than initially predicted.

dc.publisherOxford
dc.title[C II] emission in z ~ 6 strongly lensed, star-forming galaxies
dc.typeJournal Article
dcterms.source.volume462
dcterms.source.number1
dcterms.source.startPageL6
dcterms.source.endPageL10
dcterms.source.issn1745-3925
dcterms.source.titleMonthly Notices of the Royal Astronomical Society: Letters
curtin.departmentCurtin Institute of Radio Astronomy (Physics)
curtin.accessStatusFulltext not available


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