A departure from the mass–metallicity relation in merging galaxies due to an infall of metal-poor gas
Nature Astronomy, Published online: 08 January 2024; doi:10.1038/s41550-023-02171-x
Chemical abundances derived from infrared nebular lines reveal strongly depressed metallicities in interacting galaxies, suggesting that in luminous infrared galaxies chemical enrichment and stellar-mass growth take place through mergers, which drive these galaxies out of equilibrium.
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