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JADES: Insights on the low-mass end of the mass--metallicity--star-formation rate relation at $3 < z < 10$ from deep JWST/NIRSpec spectroscopy

Mirko Curti,Roberto Maiolino,Stefano Carniani,Francesco D'Eugenio,Jacopo Chevallard,Emma Curtis-Lake,Tobias J. Looser,Jan Scholtz,Hannah Übler,Joris Witstok, Alex Cameron,Stephane Charlot,Isaac Laseter,Lester Sandles,Santiago Arribas,Andrew Bunker,Giovanna Giardino,Michael V. Maseda,Tim Rawle,Bruno Rodríguez Del Pino,Renske Smit,Chris J. Willott,Daniel J. Eisenstein,Ryan Hausen,Benjamin Johnson,Marcia Rieke,Brant Robertson,Sandro Tacchella,Christina C. Williams,Christopher Willmer,William M. Baker,Rachana Bhatawdekar,Kristian Boyett,Eiichi Egami,Jakob M. Helton,Zhiyuan Ji,Nimisha Kumari,Irene Shivaei,Fengwu Sun

arxiv（2023）

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摘要
We analyse the gas-phase metallicity properties of a sample of 66 low stellar mass (log M*/M_sun < 8.5) galaxies at 36, with galaxies significantly less enriched (by ~0.4 dex on average) than predicted given their M* and SFR. These observations are consistent with an enhanced stochasticity in the accretion rate from the cosmic web, and/or with an increased efficiency in metal removals by outflows, prompting us to reconsider the nature of the relationship between M*, O/H, and SFR in the early Universe.
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