Azimuthal variations of oxygen abundance profiles in star-forming regions of disc galaxies in EAGLE simulations

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dc.contributor.authorSolar, Martın
dc.contributor.authorPatricia, B. Tissera
dc.contributor.authorHernandez-Jimenez, Jose A.
dc.date.accessioned2021-10-06T17:25:50Z
dc.date.available2021-10-06T17:25:50Z
dc.date.issued2020-02
dc.description.abstractThe exploration of the spatial distribution of chemical abundances in star-forming regions of galactic discs can help us to understand the complex interplay of physical processes that regulate the star formation activity and the chemical enrichment across a galaxy. We study the azimuthal variations of the normalized oxygen abundance profiles in the highest numerical resolution run of the Evolution and Assembly of GaLaxies and their Environments (EAGLE) Project at z = 0. We use young stellar populations to trace the abundances of star-forming regions. Oxygen profiles are estimated along different line of sights from a centrally located observer. The mean azimuthal variation in the EAGLE discs are ∼0.12 ± 0.03 dex R−1 eff for slopes and ∼0.12 ± 0.03 dex for the zero-points, in agreement with previous works. Metallicity gradients measured along random directions correlate with those determined by averaging over the whole discs, although with a large dispersion. We find a slight trend for higher azimuthal variations in the disc components of low star-forming and bulge-dominated galaxies. We also investigate the metallicity profiles of stellar populations with higher and lower levels of enrichment than the average metallicity profiles, and we find that high star-forming regions with high metallicity tend to have slightly shallower metallicity slopes compared with the overall metallicity gradient. The simulated azimuthal variations in the EAGLE discs are in agreement with observations, although the large variety of metallicity gradients would encourage further exploration of the metal mixing in numerical simulations.es
dc.description.sponsorshipIndexación: Scopuses
dc.identifier.citationMonthly Notices of the Royal Astronomical Society Open AccessVolume 491, Issue 4, Pages 4894 - 49011 February 2020es
dc.identifier.issn00358711
dc.identifier.urihttp://repositorio.unab.cl/xmlui/handle/ria/20409
dc.language.isoenes
dc.publisherOxford University Presses
dc.subjectgalaxies: abundances – galaxies: evolution – galaxies: ISM.es
dc.titleAzimuthal variations of oxygen abundance profiles in star-forming regions of disc galaxies in EAGLE simulationses
dc.typeArtículoes
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