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dc.contributor.authorSwinbank, Mark
dc.contributor.authorLacey, Cedric
dc.contributor.authorSmail, Ian
dc.contributor.authorBaugh, Carlton
dc.contributor.authorFrenk, Carlos
dc.contributor.authorBlain, Andrew
dc.contributor.authorChapman, Scott
dc.contributor.authorCoppin, Kristen
dc.contributor.authorIvison, Rob
dc.contributor.authorGonzalez, Juan
dc.contributor.authorHainline, Laura
dc.date.accessioned2014-02-11T17:58:55Z
dc.date.available2014-02-11T17:58:55Z
dc.date.issued2008-11
dc.identifier.citationSwinbank , M , Lacey , C , Smail , I , Baugh , C , Frenk , C , Blain , A , Chapman , S , Coppin , K , Ivison , R , Gonzalez , J & Hainline , L 2008 , ' The Properties of Sub-mm Galaxies in Hierarchical Models ' , Monthly Notices of the Royal Astronomical Society , vol. 391 , no. 1 , pp. 420-434 . https://doi.org/10.1111/j.1365-2966.2008.13911.x
dc.identifier.issn0035-8711
dc.identifier.otherPURE: 2730690
dc.identifier.otherPURE UUID: 7da942a8-116a-4c3e-bd66-c877d771db12
dc.identifier.otherArXiv: http://arxiv.org/abs/0809.0973v2
dc.identifier.otherScopus: 55849135799
dc.identifier.otherORCID: /0000-0002-0729-2988/work/30423110
dc.identifier.urihttp://hdl.handle.net/2299/12795
dc.description.abstractWe use the combined GALFORM semi-analytical model of galaxy formation and GRASIL spectrophotometric code to investigate the properties of galaxies selected via their sub-mm emission. Our fiducial model has previously been shown to fit the properties of local ULIRGs, as well as the number counts of faint sub-mm galaxies. Here, we test the model in detail by comparing the SEDs and stellar, dynamical, gas and halo masses of sub-mm galaxies against observational data. We precisely mimic the sub-mm and radio selection function of the observations and show that the predicted far-infrared properties of model galaxies with S_850>5mJy and S_1.4>30uJy are in good agreement with observations. Although the dust emission model does not assume a single dust temperature, the far-infrared SEDs are well described by single component modified black-body spectrum with characteristic temperature 32+/-5K. We also find evidence that the observations may have uncovered evolution in the far-infrared--radio relation in ULIRGs out to z~2. We show that the predicted redshift distribution of sub-mm galaxies provides a reasonable fit to the observational data with a median redshift z=2.0, with the radio-selected subset predicted to make up approximately 75% of the population. However, the predicted K-band and mid-infrared (3--8um) flux densities of the sub-mm galaxies (and LBGs) are up to a factor 10x fainter than observed. This discrepancy may indicate that the stellar masses of the sub-mm galaxies in the model are too low: M~10^10Mo, while observations suggest more massive systems, M~10^11Mo. Finally, we discuss the potential modifications to the models which may improve the fit to the observational data. [Abridged]en
dc.language.isoeng
dc.relation.ispartofMonthly Notices of the Royal Astronomical Society
dc.titleThe Properties of Sub-mm Galaxies in Hierarchical Modelsen
dc.contributor.institutionSchool of Physics, Astronomy and Mathematics
dc.contributor.institutionScience & Technology Research Institute
dc.contributor.institutionCentre for Astrophysics Research
dc.description.statusPeer reviewed
rioxxterms.versionSMUR
rioxxterms.versionofrecordhttps://doi.org/10.1111/j.1365-2966.2008.13911.x
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue


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