On the relative CNO underabundance in quasar absorption systems at $z\sim 3$ arising from Population III enrichment and attenuation by intermediate-mass black holes and primordial baryon accretion

Murilo Macedo, Carlos Alexandre Wuensche, Oswaldo Duarte Miranda

This article uses an adapted version of the semi-analytical model of cosmic chemical enrichment developed by \citet{Corazza_2022} to reproduce the observed abundances of C, N, and…