Diverse Histories and Common Origins of Nitrogen-enhanced JWST Galaxies
This research analyzed a large sample of 76 nitrogen-enhanced galaxies (NOEGs) from high redshifts ($z=4$ to $8.5$) using JWST data. The study found that NOEGs are transient objects experiencing specific chemical enrichment phases driven by bursts of star formation and feedback, specifically involving low-metallicity Wolf-Rayet and Asymptotic Giant Branch stars.