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Herschel-ATLAS: A binary HyLirg pinpointing a cluster of starbursting protoellipticals

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dc.contributorVirginia Techen
dc.contributor.authorIvison, R. J.en
dc.contributor.authorSwinbank, A. M.en
dc.contributor.authorSmail, I.en
dc.contributor.authorHarris, A. I.en
dc.contributor.authorBussmann, R. S.en
dc.contributor.authorCooray, A.en
dc.contributor.authorCox, P.en
dc.contributor.authorFu, H.en
dc.contributor.authorKovacs, A.en
dc.contributor.authorKrips, M.en
dc.contributor.authorNarayanan, D.en
dc.contributor.authorNegrello, M.en
dc.contributor.authorNeri, R.en
dc.contributor.authorPenarrubia, J.en
dc.contributor.authorRichard, J.en
dc.contributor.authorRiechers, D. A.en
dc.contributor.authorRowlands, K.en
dc.contributor.authorStaguhn, J. G.en
dc.contributor.authorTargett, T. A.en
dc.contributor.authorAmber, S.en
dc.contributor.authorBaker, A. J.en
dc.contributor.authorBourne, N.en
dc.contributor.authorBertoldi, F.en
dc.contributor.authorBremer, M.en
dc.contributor.authorCalanog, J. A.en
dc.contributor.authorClements, D. L.en
dc.contributor.authorDannerbauer, H.en
dc.contributor.authorDariush, A.en
dc.contributor.authorDe Zotti, G.en
dc.contributor.authorDunne, L.en
dc.contributor.authorEales, S. A.en
dc.contributor.authorFarrah, D.en
dc.contributor.authorFleuren, S.en
dc.contributor.authorFranceschini, A.en
dc.contributor.authorGeach, J. E.en
dc.contributor.authorGeorge, R. D.en
dc.contributor.authorHelly, J. C.en
dc.contributor.authorHopwood, R.en
dc.contributor.authorIbar, E.en
dc.contributor.authorJarvis, M. J.en
dc.contributor.authorKneib, J. P.en
dc.contributor.authorMaddox, S.en
dc.contributor.authorOmont, A.en
dc.contributor.authorScott, D.en
dc.contributor.authorSerjeant, S.en
dc.contributor.authorSmith, M. W. L.en
dc.contributor.authorThompson, M. A.en
dc.contributor.authorValiante, E.en
dc.contributor.authorValtchanov, I.en
dc.contributor.authorVieira, J.en
dc.contributor.authorvan der Werf, P.en
dc.contributor.departmentPhysicsen
dc.date.accessed2014-02-28en
dc.date.accessioned2014-03-10T13:18:49Zen
dc.date.available2014-03-10T13:18:49Zen
dc.date.issued2013-08en
dc.description.abstractPanchromatic observations of the best candidate hyperluminous infrared galaxies from the widest Herschel extragalactic imaging survey have led to the discovery of at least four intrinsically luminous z = 2.41 galaxies across an approximate to 100 kpc region-a cluster of starbursting protoellipticals. Via subarcsecond interferometric imaging we have measured accurate gas and star formation surface densities. The two brightest galaxies span similar to 3 kpc FWHM in submillimeter/radio continuum and CO J = 4-3, and double that in CO J = 1-0. The broad CO line is due partly to the multitude of constituent galaxies and partly to large rotational velocities in two counter-rotating gas disks-a scenario predicted to lead to the most intense starbursts, which will therefore come in pairs. The disks have M-dyn of several x 10(11) M-circle dot, and gas fractions of similar to 40%. Velocity dispersions are modest so the disks are unstable, potentially on scales commensurate with their radii: these galaxies are undergoing extreme bursts of star formation, not confined to their nuclei, at close to the Eddington limit. Their specific star formation rates place them greater than or similar to 5x above the main sequence, which supposedly comprises large gas disks like these. Their high star formation efficiencies are difficult to reconcile with a simple volumetric star formation law. N-body and dark matter simulations suggest that this system is the progenitor of a B(inary)-type approximate to 10(14.6)-M-circle dot cluster.en
dc.description.sponsorshipEuropean Research Council (ERC)en
dc.description.sponsorshipNASA through JPLen
dc.description.sponsorshipSTFCen
dc.description.sponsorshipERCen
dc.description.sponsorshipASI/INAF I/072/09/0en
dc.identifier.citationR. J. Ivison et al. 2013 ApJ 772 137 doi:10.1088/0004-637X/772/2/137en
dc.identifier.doihttps://doi.org/10.1088/0004-637x/772/2/137en
dc.identifier.issn0004-637Xen
dc.identifier.urihttp://hdl.handle.net/10919/25843en
dc.identifier.urlhttp://m.iopscience.iop.org/0004-637X/772/2/137en
dc.language.isoen_USen
dc.publisherIOP PUBLISHING LTDen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectgalaxies: high-redshiften
dc.subjectgalaxies: starbursten
dc.subjectinfrared: galaxiesen
dc.subjectradioen
dc.subjectcontinuum: galaxiesen
dc.subjectradio lines: galaxiesen
dc.subjectsubmillimeter: galaxiesen
dc.subjectstar-formation ratesen
dc.subjectultraluminous infrared galaxiesen
dc.subjectluminousen
dc.subjectsubmillimeter galaxiesen
dc.subjectscience demonstration phaseen
dc.subjectspitzer-space-telescopeen
dc.subjectactive galactic nucleien
dc.subjectgreen bank telescopeen
dc.subjecthigh-redshiften
dc.subjectmolecular gasen
dc.subjectmass functionen
dc.titleHerschel-ATLAS: A binary HyLirg pinpointing a cluster of starbursting protoellipticalsen
dc.title.serialAstrophysical Journalen
dc.typeArticle - Refereeden

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