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Evolution of the stellar metallicities of galaxies in the EAGLE simulations

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arxiv 1805.06119 v1 pith:OLWSSQ3E submitted 2018-05-16 astro-ph.GA astro-ph.CO

María Emilia De Rossi , Richard G. Bower , Andreea S. Font , Joop Schaye , Tom Theuns This is my paper · ORCID
classification astro-ph.GAastro-ph.CO
keywords stellarmetallicityeaglegalaxiesevolutionhighermassmetallicities
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We study the correlation between stellar mass and stellar metallicity in the Evolution and Assembly of GaLaxies and their Environments (EAGLE) suite of cosmological hydrodynamical simulations. At a given stellar mass, simulated galaxies with lower stellar metallicities show, on average, higher gas fractions, higher specific star formation rates and younger stellar populations. Active galactic nuclei feedback seems to play an important role on the determination of the stellar metallicity at high stellar masses. In general, simulated systems follow a well-defined anticorrelation between stellar metallicity and gas fraction, which does not evolve significantly with redshift. All these trends are consistent with previous findings regarding the metallicity of the star-forming gas in EAGLE.

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  1. The competing effects of recent and long-term star formation histories on oxygen, nitrogen, and stellar metallicities

    astro-ph.GA 2025-05 conditional novelty 6.0 of 10

    A single census of gas oxygen, gas nitrogen, and stellar iron abundances shows all three fundamental abundance relations share one origin in star-formation history, with size (potential) driving gas abundances.

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