The oxygen abundance gradients in the gas discs of galaxies in the EAGLE simulation

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dc.contributor.authorTissera, Patricia B.
dc.contributor.authorRosas-Guevara, Yetli
dc.contributor.authorBower, Richard G.
dc.contributor.authorCrain, Robert A.
dc.contributor.authorLagos, Claudia del P.
dc.contributor.authorSchaller, Matthieu
dc.contributor.authorSchaye, Joop
dc.contributor.authorTheuns, Tom
dc.date.accessioned2023-12-06T19:25:01Z
dc.date.available2023-12-06T19:25:01Z
dc.date.issued2019
dc.descriptionIndexación (Scopus)es
dc.description.abstractWe use the EAGLE simulations to study the oxygen abundance gradients of gas discs in galaxies within the stellar mass range [109.5, 1010.8] ∼M at z = 0. The estimated median oxygen gradient is -0.011 ± 0.002 dex kpc-1, which is shallower than observed. No clear trend between simulated disc oxygen gradient and galaxy stellar mass is found when all galaxies are considered. However, the oxygen gradient shows a clear correlation with gas disc size so that shallower abundance slopes are found for increasing gas disc sizes. Positive oxygen gradients are detected for ∼40 per cent of the analysed gas discs, with a slight higher frequency in low-mass galaxies. Galaxies that have quiet merger histories show a positive correlation between oxygen gradient and stellar mass, so that more massive galaxies tend to have shallowermetallicity gradients. At high stellarmass, there is a larger fraction of rotationaldominated galaxies in low-density regions. At low stellar mass, non-merger galaxies show a large variety of oxygen gradients and morphologies. The normalization of the disc oxygen gradients in non-merger galaxies by the effective radius removes the trend with stellar mass. Conversely, galaxies that experienced mergers show a weak relation between oxygen gradient and stellar mass. Additionally, the analysed EAGLE discs show no clear dependence of the oxygen gradients on local environment, in agreement with current observational findings.es
dc.identifier.citationMonthly Notices of the Royal Astronomical Society Volume 482, Issue 2, Pages 2208 - 222 1January 2019es
dc.identifier.doi10.1093/mnras/sty2817
dc.identifier.issn0035-8711
dc.identifier.urihttps://repositorio.unab.cl/xmlui/handle/ria/54463
dc.language.isoenes
dc.publisherOxford University Presses
dc.rights.licenseCC BY 4.0 DEED Atribución 4.0 Internacionalen
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/deed.esen
dc.subjectdark matteres
dc.subjectgalaxies: Abundanceses
dc.subjectgalaxies: Evolutiones
dc.titleThe oxygen abundance gradients in the gas discs of galaxies in the EAGLE simulationes
dc.typeArtículoes
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