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dc.contributor.authorMaltby, David T.
dc.contributor.authorAlmaini, Omar
dc.contributor.authorWild, Vivienne
dc.contributor.authorHatch, Nina A.
dc.contributor.authorHartley, William G.
dc.contributor.authorSimpson, Chris
dc.contributor.authorMcLure, Ross J.
dc.contributor.authorDunlop, James
dc.contributor.authorRowlands, Kate
dc.contributor.authorCirasuolo, Michele
dc.identifier.citationMaltby , D T , Almaini , O , Wild , V , Hatch , N A , Hartley , W G , Simpson , C , McLure , R J , Dunlop , J , Rowlands , K & Cirasuolo , M 2016 , ' The identification of post-starburst galaxies at z~1 using multiwavelength photometry : a spectroscopic verification ' , Monthly Notices of the Royal Astronomical Society: Letters , vol. 459 , no. 1 , pp. L114-L118 .
dc.identifier.otherPURE: 241708015
dc.identifier.otherPURE UUID: 0f840f87-e625-47d1-92a8-6ede843c0f88
dc.identifier.otherBibCode: 2016arXiv160308941M
dc.identifier.otherBibCode: 2016MNRAS.459L.114M
dc.identifier.otherScopus: 84965172444
dc.identifier.otherWOS: 000376388000024
dc.description.abstractDespite decades of study, we still do not fully understand why somemassive galaxies abruptly switch off their star formation in the early Universe, and what causes their rapid transition to the red sequence.Post-starburst galaxies provide a rare opportunity to study this transition phase, but few have currently been spectroscopically identified at high redshift (z > 1). In this paper we present the spectroscopic verification of a new photometric technique to identify post-starbursts in high-redshift surveys. The method classifies the broad-band optical-near--infrared spectral energy distributions (SEDs) of galaxies using three spectral shape parameters (super-colours), derived from a principal component analysis of model SEDs. When applied to the multiwavelength photometric data in the UKIDSS Ultra Deep Survey (UDS), this technique identified over 900 candidate post-starbursts at redshifts 0.5<z<2.0. In this study we present deep opticalspectroscopy for a subset of these galaxies, in order to confirm their post-starburst nature. Where a spectroscopic assessment was possible, we find the majority (19/24 galaxies; ~80 per cent) exhibit the strong Balmer absorption (H δ equivalent width Wλ >5 Å) and Balmer break, characteristic of post-starburst galaxies. We conclude that photometric methods can be used to select large samples of recently-quenched galaxies in the distant Universe.
dc.relation.ispartofMonthly Notices of the Royal Astronomical Society: Lettersen
dc.rights© 2016, The Author(s). Published by Oxford University Press on behalf of the Royal Astronomical Society. This work is made available online in accordance with the publisher’s policies. This is the final published version of the work, which was originally published at /
dc.subjectMethods: statisticalen
dc.subjectGalaxies: fundamental paramatersen
dc.subjectGalaxies: high-redshiften
dc.subjectGalaxies: photometryen
dc.subjectGalaxies: statisticsen
dc.subjectGalaxies: stellar contenten
dc.subjectQB Astronomyen
dc.subjectQC Physicsen
dc.titleThe identification of post-starburst galaxies at z~1 using multiwavelength photometry : a spectroscopic verificationen
dc.typeJournal articleen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews. School of Physics and Astronomyen
dc.description.statusPeer revieweden

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