A neural-network-driven galaxy simulator shows that direct-method oxygen abundances are systematically biased in composite star-forming galaxies, with underestimates up to factors of several at high metallicity.
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Nebular emission from composite star-forming galaxies -- I. A novel modelling approach
A neural-network-driven galaxy simulator shows that direct-method oxygen abundances are systematically biased in composite star-forming galaxies, with underestimates up to factors of several at high metallicity.