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dc.contributor.authorKrause, Martin G. H.
dc.contributor.authorRodgers-Lee, Donna
dc.contributor.authorDale, James E.
dc.contributor.authorDiehl, Roland
dc.contributor.authorKobayashi, Chiaki
dc.date.accessioned2021-03-11T00:09:49Z
dc.date.available2021-03-11T00:09:49Z
dc.date.issued2021-02-01
dc.identifier.citationKrause , M G H , Rodgers-Lee , D , Dale , J E , Diehl , R & Kobayashi , C 2021 , ' Galactic 26Al traces metal loss through hot chimneys ' , Monthly Notices of the Royal Astronomical Society , vol. 501 , no. 1 , pp. 210-218 . https://doi.org/10.1093/mnras/staa3612
dc.identifier.issn0035-8711
dc.identifier.otherPURE: 23016123
dc.identifier.otherPURE UUID: ca69d587-7bed-45c6-a726-de08cfd9782a
dc.identifier.otherArXiv: http://arxiv.org/abs/2011.08615v1
dc.identifier.otherScopus: 85100340365
dc.identifier.otherORCID: /0000-0002-4343-0487/work/90531126
dc.identifier.otherORCID: /0000-0002-9610-5629/work/90531145
dc.identifier.otherORCID: /0000-0001-5252-5771/work/90531146
dc.identifier.urihttp://hdl.handle.net/2299/24061
dc.description© 2020 The Author(s). Published by Oxford University Press on behalf of Royal Astronomical Society. This is the accepted manuscript version of an article which has been published in final form at https://dx.doi.org/10.1093/mnras/staa3612
dc.description.abstractRadioactive 26Al is an excellent tracer for metal ejection in the Milky Way, and can provide a direct constraint on the modelling of supernova feedback in galaxy evolution. Gamma-ray observations of the 26Al decay line have found high velocities and hence require a significant fraction of the Galactic 26Al in the hot component. At the same time, meteoritic data combined with simulation results suggest that a significant amount of 26Al makes its way into stars before decay. We investigated the distribution into hot and cold channels with a simulation of a Milky-Way-like galaxy with massive-star feedback in superbubbles and with ejecta traced by 26Al. About 30-40 per cent of the ejecta remain hot, with typical cooling times of the order Gyr. 26Al traces the footpoints of a chimney-fed outflow that mixes metals turbulently into the halo of the model galaxy on a scale of at least 50 kpc. The rest diffuses into cold gas 104 K, and may therefore be quickly available for star formation. We discuss the robustness of the result by comparison to a simulation with a different global flow pattern. The branching ratio into hot and cold components is comparable to that of longer term average results from chemical evolution modelling of galaxies, clusters, and the intracluster medium.en
dc.format.extent9
dc.language.isoeng
dc.relation.ispartofMonthly Notices of the Royal Astronomical Society
dc.subjectISM: abundances
dc.subjectISM: bubbles
dc.subjectgalaxies: abundances
dc.subjectgamma-rays: ISM
dc.subjecthydrodynamics
dc.subjectmeteorites
dc.subjectmeteoroids
dc.subjectmeteors
dc.subjectAstronomy and Astrophysics
dc.subjectSpace and Planetary Science
dc.titleGalactic 26Al traces metal loss through hot chimneysen
dc.contributor.institutionCentre for Astrophysics Research
dc.contributor.institutionSchool of Physics, Engineering & Computer Science
dc.contributor.institutionDepartment of Physics, Astronomy and Mathematics
dc.contributor.institutionSchool of Physics, Astronomy and Mathematics
dc.description.statusPeer reviewed
dc.identifier.urlhttp://www.scopus.com/inward/record.url?scp=85100340365&partnerID=8YFLogxK
rioxxterms.versionVoR
rioxxterms.versionofrecordhttps://doi.org/10.1093/mnras/staa3612
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue


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