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dc.contributor.authorYoung, L.M.
dc.contributor.authorScott, Nicholas
dc.contributor.authorSerra, Paolo
dc.contributor.authorAlatalo, Katherine
dc.contributor.authorBlitz, Leo
dc.contributor.authorBois, Maxime
dc.contributor.authorBournaud, Frederic
dc.contributor.authorBureau, Martin
dc.contributor.authorCrocker, Alison F.
dc.contributor.authorCappellari, Michele
dc.contributor.authorDavies, R.L.
dc.contributor.authorDavis, T.A.
dc.contributor.authorde Zeeuw, P.T.
dc.contributor.authorDuc, Pierre-Alain
dc.contributor.authorEmsellem, Eric
dc.contributor.authorKhochfar, Sadegh
dc.contributor.authorKrajnovic, Davor
dc.contributor.authorKuntschner, Harald
dc.contributor.authorMcDermid, Richard M.
dc.contributor.authorMorganti, Raffaella
dc.contributor.authorNaab, Thorsten
dc.contributor.authorOosterloo, Tom
dc.contributor.authorSarzi, Marc
dc.contributor.authorWeijmans, Anne-Marie
dc.date.accessioned2015-08-24T11:43:37Z
dc.date.available2015-08-24T11:43:37Z
dc.date.issued2014-11-11
dc.identifier.citationYoung , L M , Scott , N , Serra , P , Alatalo , K , Blitz , L , Bois , M , Bournaud , F , Bureau , M , Crocker , A F , Cappellari , M , Davies , R L , Davis , T A , de Zeeuw , P T , Duc , P-A , Emsellem , E , Khochfar , S , Krajnovic , D , Kuntschner , H , McDermid , R M , Morganti , R , Naab , T , Oosterloo , T , Sarzi , M & Weijmans , A-M 2014 , ' The ATLAS 3D project - XXVII : Cold gas and the colours and ages of early-type galaxies ' , Monthly Notices of the Royal Astronomical Society , vol. 444 , no. 4 , pp. 3408-3426 . https://doi.org/10.1093/mnras/stt2474
dc.identifier.issn0035-8711
dc.identifier.otherPURE: 9160907
dc.identifier.otherPURE UUID: c6e6efcf-60c6-44af-be81-126e88945acc
dc.identifier.otherScopus: 84922246766
dc.identifier.urihttp://hdl.handle.net/2299/16343
dc.descriptionDate of Acceptance: 16/12/2013
dc.description.abstractWe present a study of the cold gas contents of the ATLAS3D early-type galaxies, in the context of their optical colours, near-ultraviolet colours and Hβ absorption line strengths. Early-type (elliptical and lenticular) galaxies are not as gas poor as previously thought, and at least 40 per cent of local early-type galaxies are now known to contain molecular and/or atomic gas. This cold gas offers the opportunity to study recent galaxy evolution through the processes of cold gas acquisition, consumption (star formation) and removal. Molecular and atomic gas detection rates range from 10 to 34 per cent in red sequence early-type galaxies, depending on how the red sequence is defined, and from 50 to 70 per cent in blue early-type galaxies. Notably, massive red sequence early-type galaxies (stellar masses >5 × 1010 M⊙, derived from dynamical models) are found to have H I masses up to M(H I)/M* ∼ 0.06 and H2 masses up to M(H2)/M* ∼ 0.01. Some 20 per cent of all massive early-type galaxies may have retained atomic and/or molecular gas through their transition to the red sequence. However, kinematic and metallicity signatures of external gas accretion (either from satellite galaxies or the intergalactic medium) are also common, particularly at stellar masses ≤5 × 1010 M⊙, where such signatures are found in ∼50 per cent of H2-rich early-type galaxies. Our data are thus consistent with a scenario in which fast rotator early-type galaxies are quenched former spiral galaxies which have undergone some bulge growth processes, and in addition, some of them also experience cold gas accretion which can initiate a period of modest star formation activity. We discuss implications for the interpretation of colour–magnitude diagramsen
dc.language.isoeng
dc.relation.ispartofMonthly Notices of the Royal Astronomical Society
dc.rightsOpen
dc.titleThe ATLAS3D project - XXVII : Cold gas and the colours and ages of 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.relation.schoolSchool of Physics, Astronomy and Mathematics
dc.description.versiontypeFinal Accepted Version
dcterms.dateAccepted2014-11-11
rioxxterms.versionAM
rioxxterms.versionofrecordhttps://doi.org/10.1093/mnras/stt2474
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue
herts.rights.accesstypeOpen


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