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.
C., Estrada-Carpenter, V., et al
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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.