Some caveats about the evolution of the N/O abundance and the star formation history

TL;DR

This paper investigates how the nitrogen-to-oxygen abundance ratio evolves with metallicity in galaxies, considering different star formation histories and stellar yields, highlighting the importance of evolutionary context.

Contribution

It introduces a detailed chemical evolution model grid exploring the impact of variable star formation efficiencies on N/O evolution.

Findings

N/O ratio depends on metallicity and star formation history

Different star formation efficiencies lead to varied N/O evolution paths

The N/O abundance ratio is closely linked to galaxy evolutionary history

Abstract

We carefully analyze how the abundance of Nitrogen over Oxygen evolves when dependent on metallicity stellar yields with a primary component of N proceeding from AGBs stars are used. We show the results obtained with a chemical evolution models grid, calculated with variable star formation efficiencies, which produce different star formation histories. Finally we see how the N/O abundance is related on the evolutionary history.