Lumen modeling of IllustrisTNG50 shows that high ionization parameters from massive star clusters plus enhanced nitrogen abundances are needed to reproduce the extreme [OIII]/Hβ, [OIII]/[OII], and [NII]/Hα ratios seen in z>3 galaxies.
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Galaxy interactions at z~5 trigger star-formation bursts responsible for ~42% of stellar mass growth, half from new stars formed during the interaction.
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Origins of Extreme Emission-Line Ratios in z > 3 Galaxies: Insights from the Lumen Model
Lumen modeling of IllustrisTNG50 shows that high ionization parameters from massive star clusters plus enhanced nitrogen abundances are needed to reproduce the extreme [OIII]/Hβ, [OIII]/[OII], and [NII]/Hα ratios seen in z>3 galaxies.
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Interaction-induced star formation boosts stellar mass assembly in $z\sim5$ galaxies
Galaxy interactions at z~5 trigger star-formation bursts responsible for ~42% of stellar mass growth, half from new stars formed during the interaction.