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Dissecting the origin of the submillimetre emission in nearby galaxies with Herschel and LABOCA

Author(s): Galametz, M; Albrecht, M; Kennicutt, R; Aniano, G; Bertoldi, F; et al

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dc.contributor.authorGalametz, M-
dc.contributor.authorAlbrecht, M-
dc.contributor.authorKennicutt, R-
dc.contributor.authorAniano, G-
dc.contributor.authorBertoldi, F-
dc.contributor.authorCalzetti, D-
dc.contributor.authorCroxall, KV-
dc.contributor.authorDale, D-
dc.contributor.authorDraine, Bruce T.-
dc.contributor.authorEngelbracht, C-
dc.contributor.authorGordon, K-
dc.contributor.authorHinz, J-
dc.contributor.authorHunt, LK-
dc.contributor.authorKirkpatrick, A-
dc.contributor.authorMurphy, E-
dc.contributor.authorRoussel, H-
dc.contributor.authorSkibba, Ramin A.-
dc.contributor.authorWalter, F-
dc.contributor.authorWeiss, A-
dc.contributor.authorWilson, CD-
dc.date.accessioned2019-05-06T18:09:33Z-
dc.date.available2019-05-06T18:09:33Z-
dc.date.issued2014-04-11en_US
dc.identifier.citationGalametz, M, Albrecht, M, Kennicutt, R, Aniano, G, Bertoldi, F, Calzetti, D, Croxall, KV, Dale, D, Draine, B, Engelbracht, C, Gordon, K, Hinz, J, Hunt, LK, Kirkpatrick, A, Murphy, E, Roussel, H, Skibba, RA, Walter, F, Weiss, A, Wilson, CD. (2014). Dissecting the origin of the submillimetre emission in nearby galaxies with Herschel and LABOCA. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 439 (2542 - 2570. doi:10.1093/mnras/stu113en_US
dc.identifier.issn0035-8711-
dc.identifier.urihttp://arks.princeton.edu/ark:/88435/pr1p12t-
dc.descriptionSupplementary data may be available at http://simbad.u-strasbg.fr/simbad/sim-ref?querymethod=bib&simbo=on&submit=submit+bibcode&bibcode=2014MNRAS.439.2542G , http://ned.ipac.caltech.edu/cgi-bin/nph-objsearch?search_type=Search&refcode=2014MNRAS.439.2542G , http://archives.esac.esa.int/hsa/whsa/?ACTION=PUBLICATION&ID=2014MNRAS.439.2542G and http://telbib.eso.org/detail.php?bibcode=2014MNRAS.439.2542Gen_US
dc.description.abstractWe model the infrared to submillimetre spectral energy distribution of 11 nearby galaxies of the Key Insights on Nearby Galaxies: A Far-Infrared Survey with Herschel sample using Spitzer and Herschel data and compare model extrapolations at 870 mu m (using different fitting techniques) with Large APEX BOlometer CAmera (LABOCA) 870 mu m observations. We investigate how the differences between predictions and observations vary with model assumptions or environment. At global scales, we find that modified blackbody models using realistic cold emissivity indices (beta(c) = 2 or 1.5) are able to reproduce the 870 mu m observed emission within the uncertainties for most of the sample. Low values (beta(c) < 1.3) would be required in NGC 0337, NGC 1512 and NGC 7793. At local scales, we observe a systematic 870 mu m excess when using beta(c) = 2.0. The beta(c) = 1.5 or the Draine & Li (2007) models can reconcile predictions with observations in part of the discs. Some of the remaining ‘excesses’ occur towards the centres and can be partly or fully accounted for by non-dust contributions such as CO(3-2) or, to a lesser extent, free-free or synchrotron emission. In three non-barred galaxies, the remaining excesses rather occur in the disc outskirts. This could be a sign of a flattening of the submm slope (and decrease of the effective emissivity index) with radius in these objects.en_US
dc.format.extent2542 - 2570en_US
dc.language.isoen_USen_US
dc.relation.ispartofMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETYen_US
dc.rightsFinal published version. Article is made available in OAR by the publisher's permission or policy.en_US
dc.titleDissecting the origin of the submillimetre emission in nearby galaxies with Herschel and LABOCAen_US
dc.typeJournal Articleen_US
dc.identifier.doidoi:10.1093/mnras/stu113-
dc.date.eissued2014-02-15en_US
dc.identifier.eissn1365-2966-
pu.type.symplectichttp://www.symplectic.co.uk/publications/atom-terms/1.0/journal-articleen_US

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