Show simple item record

dc.contributor.authorMcDermid, Richard M.
dc.contributor.authorCappellari, Michele
dc.contributor.authorAlatalo, Katherine
dc.contributor.authorBayet, Estelle
dc.contributor.authorBlitz, Leo
dc.contributor.authorBois, Maxime
dc.contributor.authorBournaud, Frédéric
dc.contributor.authorBureau, Martin
dc.contributor.authorCrocker, Alison F.
dc.contributor.authorDavies, Roger L.
dc.contributor.authorDavis, Timothy
dc.contributor.authorde Zeeuw, P.T.
dc.contributor.authorDuc, Pierre-Alain
dc.contributor.authorEmsellem, Eric
dc.contributor.authorKhochfar, Sadegh
dc.contributor.authorKrajnović, Davor
dc.contributor.authorKuntschner, Harald
dc.contributor.authorMorganti, Raffaella
dc.contributor.authorNaab, Thorsten
dc.contributor.authorOosterloo, Tom
dc.contributor.authorSarzi, Marc
dc.contributor.authorScott, Nicholas
dc.contributor.authorSerra, Paolo
dc.contributor.authorWeijmans, Anne Marie
dc.contributor.authorYoung, Lisa M.
dc.date.accessioned2015-08-25T10:58:36Z
dc.date.available2015-08-25T10:58:36Z
dc.date.issued2014-09-10
dc.identifier.citationMcDermid , R M , Cappellari , M , Alatalo , K , Bayet , E , Blitz , L , Bois , M , Bournaud , F , Bureau , M , Crocker , A F , Davies , R L , Davis , T , de Zeeuw , P T , Duc , P-A , Emsellem , E , Khochfar , S , Krajnović , D , Kuntschner , H , Morganti , R , Naab , T , Oosterloo , T , Sarzi , M , Scott , N , Serra , P , Weijmans , A M & Young , L M 2014 , ' Connection between dynamically derived initial mass function normalization and stellar population parameters ' , Astrophysical Journal Letters , vol. 792 , no. 2 , pp. L37- . https://doi.org/10.1088/2041-8205/792/2/L37
dc.identifier.issn2041-8205
dc.identifier.otherPURE: 9163984
dc.identifier.otherPURE UUID: 6b1d78ad-b228-4981-966b-132211013918
dc.identifier.otherScopus: 84906895644
dc.identifier.urihttp://hdl.handle.net/2299/16356
dc.descriptionDate of Acceptance: 10/08/2014
dc.description.abstractWe report on empirical trends between the dynamically determined stellar initial mass function (IMF) and stellar population properties for a complete, volume-limited sample of 260 early-type galaxies from the ATLAS3D project. We study trends between our dynamically derived IMF normalization αdyn ≡ (M/L)stars/(M/L)Salp and absorption line strengths, and interpret these via single stellar population-equivalent ages, abundance ratios (measured as [α/Fe]), and total metallicity, [Z/H]. We find that old and alpha-enhanced galaxies tend to have on average heavier (Salpeter-like) mass normalization of the IMF, but stellar population does not appear to be a good predictor of the IMF, with a large range of αdyn at a given population parameter. As a result, we find weak αdyn-[α/Fe] and αdyn -Age correlations and no significant αdyn -[Z/H] correlation. The observed trends appear significantly weaker than those reported in studies that measure the IMF normalization via the low-mass star demographics inferred through stellar spectral analysis.en
dc.format.extent5
dc.language.isoeng
dc.relation.ispartofAstrophysical Journal Letters
dc.rights/dk/atira/pure/core/openaccesspermission/open
dc.subjectgalaxies: abundances
dc.subjectgalaxies: elliptical and lenticular cD
dc.subjectgalaxies: kinematics and dynamics
dc.subjectgalaxies: stellar content
dc.titleConnection between dynamically derived initial mass function normalization and stellar population parametersen
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
rioxxterms.versionAM
rioxxterms.versionofrecordhttps://doi.org/10.1088/2041-8205/792/2/L37
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue
herts.rights.accesstypeopenAccess


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record