Connecting JWST discovered N/O-enhanced galaxies to globular clusters: Evidence from chemical imprints

Understand

Recent JWST observations have revealed a growing population of galaxies at $z>4$ with elevated nitrogen-to-oxygen ratios.

• These "N/O-enhanced" galaxies (NOEGs) exhibit near- to super-solar N/O at sub-solar O/H, clearly deviating from the well-established scaling relation between N/O and O/H observed in local galaxies.
• The origin of this abundance anomaly is unclear.
• Interestingly, local globular clusters also exhibit anomalous light-element abundances, whose origin remains debated.