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dc.contributor.authorTaylor, Philip
dc.contributor.authorKobayashi, Chiaki
dc.date.accessioned2017-07-12T16:28:15Z
dc.date.available2017-07-12T16:28:15Z
dc.date.issued2015-09-30
dc.identifier.citationTaylor , P & Kobayashi , C 2015 , ' Quantifying AGN-Driven Metal-Enhanced Outflows in Chemodynamical Simulations ' , Monthly Notices of the Royal Astronomical Society , vol. 452 , no. 1 , pp. L59-L63 . https://doi.org/10.1093/mnrasl/slv087
dc.identifier.issn0035-8711
dc.identifier.otherPURE: 10327506
dc.identifier.otherPURE UUID: 69b2cf64-6fe1-4f3a-9850-cb98dd05a3d0
dc.identifier.otherArXiv: http://arxiv.org/abs/1506.08957v1
dc.identifier.otherScopus: 84939541420
dc.identifier.otherORCID: /0000-0002-4343-0487/work/62750480
dc.identifier.urihttp://hdl.handle.net/2299/18893
dc.descriptionThis article has been accepted for publication in Monthly Notices of the Royal Astronomical Society. © 2015 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society.
dc.description.abstractWe show the effects of AGN-driven outflows on the ejection of heavy elements using our cosmological simulations, where super-massive black holes originate from the first stars. In the most massive galaxy, we have identified two strong outflows unambiguously driven by AGN feedback. These outflows have a speed greater than $\sim 8000$ km\,s$^{-1}$ near the AGN, and travel out to a half Mpc with $\sim 3000$ km\,s$^{-1}$. These outflows remove the remaining gas ($\sim 3$ per cent of baryons) and significant amounts of metals ($\sim 2$ per cent of total produced metals) from the host galaxy, chemically enriching the circumgalactic medium (CGM) and the intergalactic medium (IGM). 17.6 per cent of metals from this galaxy, and 18.4 per cent of total produced metals in the simulation, end up in the CGM and IGM, respectively. The metallicities of the CGM and IGM are higher with AGN feedback, while the mass--metallicity relation of galaxies is not affected very much. We also find `selective' mass-loss where iron is more effectively ejected than oxygen because of the time-delay of Type Ia Supernovae. AGN-driven outflows play an essential role not only in quenching of star formation in massive galaxies to match with observed down-sizing phenomena, but also in a large-scale chemical enrichment in the Universe. Observational constraints of metallicities and elemental abundance ratios in outflows are important to test the modelling of AGN feedback in galaxy formation.en
dc.format.extent4
dc.language.isoeng
dc.relation.ispartofMonthly Notices of the Royal Astronomical Society
dc.subjectastro-ph.GA
dc.titleQuantifying AGN-Driven Metal-Enhanced Outflows in Chemodynamical Simulationsen
dc.contributor.institutionCentre for Astrophysics Research
dc.contributor.institutionSchool of Physics, Astronomy and Mathematics
dc.contributor.institutionScience & Technology Research Institute
dc.description.statusPeer reviewed
rioxxterms.versionVoR
rioxxterms.versionofrecordhttps://doi.org/10.1093/mnrasl/slv087
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue


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