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dc.contributor.authorGullberg, B.
dc.contributor.authorSwinbank, A. M.
dc.contributor.authorSmail, I.
dc.contributor.authorBiggs, A. D.
dc.contributor.authorBertoldi, F.
dc.contributor.authorBreuck, C. De
dc.contributor.authorChapman, S. C.
dc.contributor.authorChen, C. -C.
dc.contributor.authorCooke, E. A.
dc.contributor.authorCoppin, K. E. K.
dc.contributor.authorCox, P.
dc.contributor.authorDannerbauer, H.
dc.contributor.authorDunlop, J. S.
dc.contributor.authorEdge, A. C.
dc.contributor.authorFarrah, D.
dc.contributor.authorGeach, J. E.
dc.contributor.authorGreve, T. R.
dc.contributor.authorHodge, J.
dc.contributor.authorIbar, E.
dc.contributor.authorIvison, R. J.
dc.contributor.authorKarim, A.
dc.contributor.authorSchinnerer, E.
dc.contributor.authorScott, D.
dc.contributor.authorSimpson, J. M.
dc.contributor.authorStach, S. M.
dc.contributor.authorThomson, A. P.
dc.contributor.authorWerf, P. van der
dc.contributor.authorWalter, F.
dc.contributor.authorWardlow, J. L.
dc.contributor.authorWeiss, A.
dc.date.accessioned2018-06-28T16:01:23Z
dc.date.available2018-06-28T16:01:23Z
dc.date.issued2018-05-17
dc.identifier.citationGullberg , B , Swinbank , A M , Smail , I , Biggs , A D , Bertoldi , F , Breuck , C D , Chapman , S C , Chen , C -C , Cooke , E A , Coppin , K E K , Cox , P , Dannerbauer , H , Dunlop , J S , Edge , A C , Farrah , D , Geach , J E , Greve , T R , Hodge , J , Ibar , E , Ivison , R J , Karim , A , Schinnerer , E , Scott , D , Simpson , J M , Stach , S M , Thomson , A P , Werf , P V D , Walter , F , Wardlow , J L & Weiss , A 2018 , ' The dust and [CII] morphologies of redshift ~4.5 sub-millimeter galaxies at ~200pc resolution : The Absence of Large Clumps in the Interstellar Medium at High-redshift ' , The Astrophysical Journal , vol. 859 , no. 1 , 12 . https://doi.org/10.3847/1538-4357/aabe8c
dc.identifier.issn0004-637X
dc.identifier.otherPURE: 14855315
dc.identifier.otherPURE UUID: d7422fd6-fcbb-483f-8ea1-5a39c2fc30da
dc.identifier.otherArXiv: http://arxiv.org/abs/1804.03663v1
dc.identifier.otherScopus: 85048059645
dc.identifier.otherORCID: /0000-0002-0729-2988/work/53692734
dc.identifier.urihttp://hdl.handle.net/2299/20220
dc.descriptionThis is an author-created, un-copyedited version of an article published in The Astrophysical Journal. The Version of Record is available online at https://doi.org/10.3847/1538-4357/aabe8c.
dc.description.abstractWe present deep, high-resolution (0.″03, 200 pc) ALMA Band 7 observations covering the dust continuum and [C ii] λ157.7 μm emission in four z ∼4.4-4.8 sub-millimeter galaxies (SMGs) selected from the ALESS and AS2UDS surveys. The data show that the rest-frame 160 μm (observed 345 GHz) dust emission is consistent with smooth morphologies on kpc scales for three of the sources. One source, UDS 47.0, displays apparent substructure, but this is also consistent with a smooth morphology - as indicated by simulations showing that smooth exponential disks can appear clumpy when observed at the high angular resolution (0.″03) and depth of these observations ( μJy beam -1). The four SMGs are bright [C ii] emitters. We extract [C ii] spectra from the high-resolution data, and recover ∼20%-100% of the [C ii] flux and ∼40%-80% of the dust continuum emission, compared to the previous lower-resolution observations. When tapered to 0.″2 resolution, our maps recover ∼80%-100% of the continuum emission, indicating that ∼60% of the emission is resolved out on ∼200 pc scales. We find that the [C ii] emission in high-redshift galaxies is more spatially extended than the rest-frame 160 μm dust continuum by a factor of 1.6 ±0.4. By considering the / ratio as a function of the star formation rate surface density (), we revisit the [C ii] deficit and suggest that the decline in the / ratio as a function of is consistent with local processes. We also explore the physical drivers that may be responsible for these trends and can give rise to the properties found in the densest regions of SMGs.en
dc.language.isoeng
dc.relation.ispartofThe Astrophysical Journal
dc.subjectgalaxies: evolution
dc.subjectgalaxies: ISM
dc.subjectsubmillimeter: galaxies
dc.subjectAstronomy and Astrophysics
dc.subjectSpace and Planetary Science
dc.titleThe dust and [CII] morphologies of redshift ~4.5 sub-millimeter galaxies at ~200pc resolution : The Absence of Large Clumps in the Interstellar Medium at High-redshiften
dc.contributor.institutionCentre for Astrophysics Research
dc.contributor.institutionSchool of Physics, Astronomy and Mathematics
dc.contributor.institutionCentre of Data Innovation Research
dc.description.statusPeer reviewed
dc.identifier.urlhttp://www.scopus.com/inward/record.url?scp=85048059645&partnerID=8YFLogxK
rioxxterms.versionAM
rioxxterms.versionofrecordhttps://doi.org/10.3847/1538-4357/aabe8c
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue


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