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dc.contributor.authorDavis, T.A.
dc.contributor.authorYoung, L.M.
dc.contributor.authorCrocker, Alison F.
dc.contributor.authorBureau, Martin
dc.contributor.authorBlitz, Leo
dc.contributor.authorAlatalo, Katherine
dc.contributor.authorEmsellem, Eric
dc.contributor.authorNaab, Thorsten
dc.contributor.authorBayet, Estelle
dc.contributor.authorBois, Maxime
dc.contributor.authorBournaud, Frederic
dc.contributor.authorCappellari, Michele
dc.contributor.authorDavies, R.L.
dc.contributor.authorde Zeeuw, P.T.
dc.contributor.authorDuc, Pierre-Alain
dc.contributor.authorKhochfar, Sadegh
dc.contributor.authorKrajnović, Davor
dc.contributor.authorKuntschner, Harald
dc.contributor.authorMcDermid, Richard M.
dc.contributor.authorMorganti, Raffaella
dc.contributor.authorOosterloo, Tom
dc.contributor.authorSarzi, Marc
dc.contributor.authorScott, Nicholas
dc.contributor.authorSerra, Paolo
dc.contributor.authorWeijmans, Anne-Marie
dc.date.accessioned2015-08-24T11:28:38Z
dc.date.available2015-08-24T11:28:38Z
dc.date.issued2014-11-11
dc.identifier.citationDavis , T A , Young , L M , Crocker , A F , Bureau , M , Blitz , L , Alatalo , K , Emsellem , E , Naab , T , Bayet , E , Bois , M , Bournaud , F , Cappellari , M , Davies , R L , de Zeeuw , P T , Duc , P-A , Khochfar , S , Krajnović , D , Kuntschner , H , McDermid , R M , Morganti , R , Oosterloo , T , Sarzi , M , Scott , N , Serra , P & Weijmans , A-M 2014 , ' The ATLAS 3D Project - XXVIII : Dynamically driven star formation suppression in early-type galaxies ' , Monthly Notices of the Royal Astronomical Society , vol. 444 , no. 4 , pp. 3427-3445 . https://doi.org/10.1093/mnras/stu570
dc.identifier.issn0035-8711
dc.identifier.otherPURE: 9160828
dc.identifier.otherPURE UUID: 3099c3e4-b002-49ef-a583-b2202148625f
dc.identifier.otherScopus: 84922493077
dc.identifier.urihttp://hdl.handle.net/2299/16340
dc.descriptionDate of Acceptance: 19/03/2014
dc.description.abstractWe present measurements of the star formation rate (SFR) in the early-type galaxies (ETGs) of the ATLAS3D sample, based on Wide-field Infrared Survey Explorer (WISE) 22 μm and Galaxy Evolution Explorer far-ultraviolet emission. We combine these with gas masses estimated from 12CO and H I data in order to investigate the star formation efficiency (SFE) in a larger sample of ETGs than previously available. We first recalibrate (based on WISE data) the relation between old stellar populations (traced at Ks band) and 22 μm luminosity, allowing us to remove the contribution of 22 μm emission from circumstellar dust. We then go on to investigate the position of ETGs on the Kennicutt–Schmidt (KS) relation. Molecular gas-rich ETGs have comparable star formation surface densities to normal spiral galaxy centres, but they lie systematically offset from the KS relation, having lower SFEs by a factor of ≈2.5 (in agreement with other authors). This effect is driven by galaxies where a substantial fraction of the molecular material is in the rising part of the rotation curve, and shear is high. We show here for the first time that although the number of stars formed per unit gas mass per unit time is lower in ETGs, it seems that the amount of stars formed per free-fall time is approximately constant. The scatter around this dynamical relation still correlates with galaxy properties such as the shape of the potential in the inner regions. This leads us to suggest that dynamical properties (such as shear or the global stability of the gas) may be important second parameters that regulate star formation and cause much of the scatter around star formation relationsen
dc.language.isoeng
dc.relation.ispartofMonthly Notices of the Royal Astronomical Society
dc.rightsOpen
dc.titleThe ATLAS3D Project - XXVIII : Dynamically driven star formation suppression in early-type galaxiesen
dc.contributor.institutionSchool of Physics, Astronomy and Mathematics
dc.contributor.institutionScience & Technology Research Institute
dc.contributor.institutionCentre for Astrophysics Research
dc.description.statusPeer reviewed
dc.description.versiontypeFinal Accepted Version
dcterms.dateAccepted2014-11-11
rioxxterms.versionAM
rioxxterms.versionofrecordhttps://doi.org/10.1093/mnras/stu570
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue
herts.rights.accesstypeOpen


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