Stacked spectra give n_e ~100-150 cm^{-3} at z=2-5 rising to 381 cm^{-3} at z=5-7 for low-mass galaxies, with fitted evolution n_e = n_e0 [(1+z)/(1+2.3)]^alpha.
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JWST auroral-line selected galaxies at high redshift show an MZR slope of 0.38 with selection biases favoring high-SFR low-metallicity systems, while stacked non-detections lie closer to the fundamental metallicity relation.
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Electron Densities of Typical Low-Mass Galaxies at z~2-7 from Stacked JWST/NIRSpec Spectra
Stacked spectra give n_e ~100-150 cm^{-3} at z=2-5 rising to 381 cm^{-3} at z=5-7 for low-mass galaxies, with fitted evolution n_e = n_e0 [(1+z)/(1+2.3)]^alpha.
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Shape of Direct-Method Mass-Metallicity Relation with JWST: Fast-Track Nitrogen and Helium Enrichment
JWST auroral-line selected galaxies at high redshift show an MZR slope of 0.38 with selection biases favoring high-SFR low-metallicity systems, while stacked non-detections lie closer to the fundamental metallicity relation.