Galaxy Zoo: building the low-mass end of the red sequence with local post-starburst galaxies

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dc.contributor.authorWong, O. I.
dc.contributor.authorSchawinski, K.
dc.contributor.authorKaviraj, S.
dc.contributor.authorMasters, K. L.
dc.contributor.authorNichol, R. C.
dc.contributor.authorLintott, C.
dc.contributor.authorKeel, W. C.
dc.contributor.authorDarg, D.
dc.contributor.authorBamford, S. P.
dc.contributor.authorAndreescu, D.
dc.contributor.authorMurray, P.
dc.contributor.authorRaddick, M. J.
dc.contributor.authorSzalay, A.
dc.contributor.authorThomas, D.
dc.contributor.authorVandenBerg, J.
dc.contributor.otherCommonwealth Scientific & Industrial Research Organisation (CSIRO)
dc.contributor.otherYale University
dc.contributor.otherUniversity of Alabama Tuscaloosa
dc.contributor.otherUniversity of Nottingham
dc.contributor.otherJohns Hopkins University
dc.contributor.otherImperial College London
dc.contributor.otherUniversity of Oxford
dc.contributor.otherUniversity of Portsmouth
dc.date.accessioned2018-09-21T19:49:40Z
dc.date.available2018-09-21T19:49:40Z
dc.date.issued2012
dc.description.abstractWe present a study of local post-starburst galaxies (PSGs) using the photometric and spectroscopic observations from the Sloan Digital Sky Survey and the results from the Galaxy Zoo project. We find that the majority of our local PSG population have neither early- nor late-type morphologies but occupy a well-defined space within the colourstellar mass diagram, most notably, the low-mass end of the green valley below the transition mass thought to be the mass division between low-mass star-forming galaxies and high-mass passively evolving bulge-dominated galaxies. Our analysis suggests that it is likely that local PSGs will quickly transform into red, low-mass early-type galaxies as the stellar morphologies of the green PSGs largely resemble that of the early-type galaxies within the same mass range. We propose that the current population of PSGs represents a population of galaxies which is rapidly transitioning between the star-forming and the passively evolving phases. Subsequently, these PSGs will contribute towards the build-up of the low-mass end of the red sequence once the current population of young stars fade and stars are no longer being formed. These results are consistent with the idea of downsizing where the build-up of smaller galaxies occurs at later epochs.en_US
dc.format.mimetypeapplication/pdf
dc.identifier.citationWong, O. et al. (2012): Galaxy Zoo: building the low-mass end of the red sequence with local post-starburst galaxies. Monthly Notices of the Royal Astronomical Society, 420(2). DOI: https://doi.org/10.1111/j.1365-2966.2011.20159.x
dc.identifier.doi10.1111/j.1365-2966.2011.20159.x
dc.identifier.orcidhttps://orcid.org/0000-0003-4264-3509
dc.identifier.orcidhttps://orcid.org/0000-0002-6325-5671
dc.identifier.orcidhttps://orcid.org/0000-0003-0846-9578
dc.identifier.orcidhttps://orcid.org/0000-0001-7821-7195
dc.identifier.orcidhttps://orcid.org/0000-0001-5464-0888
dc.identifier.orcidhttps://orcid.org/0000-0002-5601-575X
dc.identifier.orcidhttps://orcid.org/0000-0002-4108-3282
dc.identifier.urihttp://ir.ua.edu/handle/123456789/3926
dc.languageEnglish
dc.language.isoen_US
dc.publisherOxford University Press
dc.rights.licenseAttribution 4.0 International (CC BY 4.0)
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectgalaxies: evolution
dc.subjectDIGITAL-SKY-SURVEY
dc.subjectCOLOR-MAGNITUDE RELATION
dc.subjectSTAR-FORMATION HISTORIES
dc.subjectSTELLAR MASS
dc.subjectE+A-GALAXIES
dc.subjectDISTANT CLUSTERS
dc.subjectSPIRAL GALAXIES
dc.subjectHOST GALAXIES
dc.subjectDATA RELEASE
dc.subjectBLACK-HOLES
dc.subjectAstronomy & Astrophysics
dc.titleGalaxy Zoo: building the low-mass end of the red sequence with local post-starburst galaxiesen_US
dc.typetext
dc.typeArticle
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