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dc.contributor.authorAlmaini, Omar
dc.contributor.authorWild, Vivienne
dc.contributor.authorMaltby, David T.
dc.contributor.authorHartley, William G.
dc.contributor.authorSimpson, Chris
dc.contributor.authorHatch, Nina A.
dc.contributor.authorMcLure, Ross J.
dc.contributor.authorDunlop, James S.
dc.contributor.authorRowlands, Kate
dc.date.accessioned2017-08-21T12:30:09Z
dc.date.available2017-08-21T12:30:09Z
dc.date.issued2017-12-01
dc.identifier.citationAlmaini , O , Wild , V , Maltby , D T , Hartley , W G , Simpson , C , Hatch , N A , McLure , R J , Dunlop , J S & Rowlands , K 2017 , ' Massive post-starburst galaxies at z > 1 are compact proto-spheroids ' , Monthly Notices of the Royal Astronomical Society , vol. 472 , no. 2 , pp. 1401-1412 . https://doi.org/10.1093/mnras/stx1957en
dc.identifier.issn0035-8711
dc.identifier.otherPURE: 250890714
dc.identifier.otherPURE UUID: f49b04eb-11f2-4016-9297-c133165f5364
dc.identifier.otherBibCode: 2017arXiv170800005A
dc.identifier.otherScopus: 85044259258
dc.identifier.otherWOS: 000413082900012
dc.identifier.urihttps://hdl.handle.net/10023/11520
dc.description.abstractWe investigate the relationship between the quenching of star formation and the structural transformation of massive galaxies, using a large sample of photometrically-selected post-starburst galaxies in the UKIDSS UDS field. We find that post-starburst galaxies at high-redshift (z > 1) show high Sérsic indices, significantly higher than those of active star-forming galaxies, but with a distribution that is indistinguishable from the old quiescent population. We conclude that the morphological transformation occurs before (or during) the quenching of star formation. Recently quenched galaxies are also the most compact; we find evidence that massive post-starburst galaxies (M★ > 1010.5~M⊙) at high redshift (z > 1) are on average smaller than comparable quiescent galaxies at the same epoch. Our findings are consistent with a scenario in which massive passive galaxies are formed from three distinct phases: (1) gas-rich dissipative collapse to very high densities, forming the proto-spheroid; (2) rapid quenching of star formation, to create the “red nugget” with post-starburst features; (3) a gradual growth in size as the population ages, perhaps as a result of minor mergers.
dc.language.isoeng
dc.relation.ispartofMonthly Notices of the Royal Astronomical Societyen
dc.rights© 2017, the Author(s). This work has been made available online in accordance with the publisher’s policies. This is the author created, accepted version manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at academic.oup.com/mnras / https://doi.org/10.1093/mnras/stx1957en
dc.subjectGalaxies: evolutionen
dc.subjectGalaxies: formationen
dc.subjectGalaxies: fundamental paramatersen
dc.subjectGalaxies: structureen
dc.subjectGalaxies: high-redshiften
dc.subjectQB Astronomyen
dc.subjectQC Physicsen
dc.subject3rd-DASen
dc.subject.lccQBen
dc.subject.lccQCen
dc.titleMassive post-starburst galaxies at z > 1 are compact proto-spheroidsen
dc.typeJournal articleen
dc.contributor.sponsorEuropean Research Councilen
dc.description.versionPostprinten
dc.contributor.institutionUniversity of St Andrews. School of Physics and Astronomyen
dc.identifier.doihttps://doi.org/10.1093/mnras/stx1957
dc.description.statusPeer revieweden
dc.identifier.urlhttp://adsabs.harvard.edu/abs/2017arXiv170800005Aen
dc.identifier.grantnumberERC-2012-StG-20111012en


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