Herschel-ATLAS: properties of dusty massive galaxies at low and high redshifts

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dc.contributor.authorRowlands, K.
dc.contributor.authorDunne, L.
dc.contributor.authorDye, S.
dc.contributor.authorAragon-Salamanca, A.
dc.contributor.authorMaddox, S.
dc.contributor.authorda Cunha, E.
dc.contributor.authorSmith, D.J.B.
dc.contributor.authorBourne, N.
dc.contributor.authorEales, S.
dc.contributor.authorGomez, H.L.
dc.contributor.authorSmail, I.
dc.contributor.authorAlpaslan, M.
dc.contributor.authorClark, C.J.R.
dc.contributor.authorDriver, S.
dc.contributor.authorIbar, E.
dc.contributor.authorIvison, R.J.
dc.contributor.authorRobotham, A.
dc.contributor.authorSmith, M.W.L.
dc.contributor.authorValiante, E.
dc.date.accessioned2015-06-08T22:09:10Z
dc.date.available2015-06-08T22:09:10Z
dc.date.issued2014en
dc.description.abstractWe present a comparison of the physical properties of a rest-frame 250μm selected sample of massive, dusty galaxies from 0 < z < 5.3. Our sample comprises 29 high- redshift submillimetre galaxies (SMGs) from the literature, and 843 dusty galaxies at z < 0.5 from the Herschel -ATLAS, selected to have a similar stellar mass to the SMGs. The z > 1 SMGs have an average SFR of 390+80 −70M⊙yr−1 which is 120 times that of the low-redshift sample matched in stellar mass to the SMGs (SFR= 3.3 ± 0.2M⊙yr−1). The SMGs harbour a substantial mass of dust (1.2+0.3 −0.2×109M⊙), compared to (1.6± 0.1) × 108M⊙ for low-redshift dusty galaxies. At low redshifts the dust luminosity is dominated by the diffuse ISM, whereas a large fraction of the dust luminosity in SMGs originates from star-forming regions. At the same dust mass SMGs are offset towards a higher SFR compared to the low-redshift H-ATLAS galaxies. This is not only due to the higher gas fraction in SMGs but also because they are undergoing a more efficient mode of star formation, which is consistent with their bursty star-formation histories. The offset in SFR between SMGs and low-redshift galaxies is similar to that found in CO studies, suggesting that dust mass is as good a tracer of molecular gas as CO.en
dc.identifier.citationRowlands, K., Dunne, L., Dye, S., Aragon-Salamanca, A., Maddox, S., da Cunha, E., Smith, D.J.B., Bourne, N., Eales, S., Gomez, H.L., Smail, I., Alpaslan, M., Clark, C.J.R., Driver, S., Ibar, E., Ivison, R.J., Robotham, A., Smith, M.W.L., Valiante, E. (2014) Herschel-ATLAS: properties of dusty massive galaxies at low and high redshifts. Monthly Notices of the Royal Astronomical Society, 441(2), pp. 1017-1039.en
dc.identifier.doihttps://doi.org/10.1093/mnras/stu510
dc.identifier.urihttp://hdl.handle.net/10092/10492
dc.language.isoen
dc.publisherUniversity of Canterbury. Physics and Astronomyen
dc.rights.urihttps://hdl.handle.net/10092/17651en
dc.subjectgalaxies: fundamental parametersen
dc.subjectgalaxies: evolutionen
dc.subjectgalaxies: high-redshiften
dc.subjectgalaxies: ISM - ISM: dust, extinctionen
dc.subjectSubmillimetre: galaxiesen
dc.subject.anzsrcFields of Research::51 - Physical sciences::5101 - Astronomical sciences::510103 - Cosmology and extragalactic astronomyen
dc.titleHerschel-ATLAS: properties of dusty massive galaxies at low and high redshiftsen
dc.typeJournal Article
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