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dc.contributor.authorSocolovsky, Miguel
dc.contributor.authorMaltby, David T
dc.contributor.authorHatch, Nina A
dc.contributor.authorAlmaini, Omar
dc.contributor.authorWild, Vivienne
dc.contributor.authorHartley, William G
dc.contributor.authorSimpson, Chris
dc.contributor.authorRowlands, Kate
dc.date.accessioned2018-12-10T09:38:01Z
dc.date.available2018-12-10T09:38:01Z
dc.date.issued2019-01-11
dc.identifier256867410
dc.identifier148fe8eb-b8b1-48a8-a5c6-474cc8473116
dc.identifier85057152342
dc.identifier000454578700015
dc.identifier.citationSocolovsky , M , Maltby , D T , Hatch , N A , Almaini , O , Wild , V , Hartley , W G , Simpson , C & Rowlands , K 2019 , ' Compact star-forming galaxies preferentially quenched to become PSBs in z < 1 clusters ' , Monthly Notices of the Royal Astronomical Society , vol. 482 , no. 2 , pp. 1640-1650 . https://doi.org/10.1093/mnras/sty2840en
dc.identifier.issn0035-8711
dc.identifier.otherRIS: urn:993AD7745EE13CB5619A0004469378A8
dc.identifier.urihttps://hdl.handle.net/10023/16654
dc.descriptionMS acknowledges support from IAC and STFC. VW acknowledges support from the European Research Council Starting grant (SEDmorph, P.I. V. Wild).en
dc.description.abstractWe analyse the structure of galaxies with high specific star formation rate (SSFR) in cluster and field environments in the redshift range 0.5 < z < 1.0. Recent studies have shown that these galaxies are strongly depleted in dense environments due to rapid environmental quenching, giving rise to post-starburst galaxies (PSBs). We use effective radii and Sérsic indices as tracers of galaxy structure, determined using imaging from the UKIDSS Ultra Deep Survey (UDS). We find that the high-SSFR galaxies that survive into the cluster environment have, on average, larger effective radii than those in the field. We suggest that this trend is likely to be driven by the most compact star-forming galaxies being preferentially quenched in dense environments. We also show that the PSBs in clusters have stellar masses and effective radii that are similar to the missing compact star-forming population, suggesting that these PSBs are the result of size-dependent quenching. We propose that both strong stellar feedback and the stripping of the extended halo act together to preferentially and rapidly quench the compact and low-mass star-forming systems in clusters to produce PSBs. We test this scenario using the stacked spectra of 124 high-SSFR galaxies, showing that more compact galaxies are more likely to host outflows. We conclude that a combination of environmental and secular processes is the most likely explanation for the appearance of PSBs in galaxy clusters.
dc.format.extent11
dc.format.extent4163736
dc.language.isoeng
dc.relation.ispartofMonthly Notices of the Royal Astronomical Societyen
dc.subjectGalaxies: evolutionen
dc.subjectGalaxies: quenchingen
dc.subjectGalaxies: environment, clustersen
dc.subjectGalaxies: high-redshiften
dc.subjectQB Astronomyen
dc.subject3rd-NDASen
dc.subject.lccQBen
dc.titleCompact star-forming galaxies preferentially quenched to become PSBs in z < 1 clustersen
dc.typeJournal articleen
dc.contributor.sponsorEuropean Research Councilen
dc.contributor.institutionUniversity of St Andrews. School of Physics and Astronomyen
dc.identifier.doihttps://doi.org/10.1093/mnras/sty2840
dc.description.statusPeer revieweden
dc.identifier.urlhttps://arxiv.org/abs/1810.10023en
dc.identifier.grantnumberERC-2012-StG-20111012en


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