76 N/O-enhanced galaxies at 4<z<8.5 are observed shortly after starbursts, either in the WR enrichment phase within 10 Myr or the AGB phase after 30-40 Myr following outflows.
V.et al.JWST/NIRSpec Measurements of Extremely Low Metal- licities in High Equivalent Width LyαEmitters.The Astrophysical Journal956, 11 (2023)
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Diverse Histories and Common Origins of Nitrogen-enhanced JWST Galaxies
76 N/O-enhanced galaxies at 4<z<8.5 are observed shortly after starbursts, either in the WR enrichment phase within 10 Myr or the AGB phase after 30-40 Myr following outflows.
- Early metal-enriched baryon cycling before the midpoint of cosmic reionization