The role of the star formation on the nitrogen abundance evolution
M. Moll\'a (1), J. M. V\'ilchez,(2), A.I. D\'iaz,(3), M. Gavil\'an, (3) ((1) CIEMAT, Departamento de Investigaci\'on B\'asica, Madrid, Spain, (2), Instituto de Astrof\'isica de Andaluc\'ia, CSIC, Granada, Spain, (3), Departamento de F\'isica Te\'orica
TL;DR
This paper investigates how star formation influences nitrogen abundance evolution in galaxies, using models that match observational data and highlight the importance of star formation history in chemical evolution.
Contribution
It introduces galaxy models with varied star formation efficiencies and distributions, demonstrating their impact on nitrogen evolution and agreement with observations.
Findings
Models align with observed nitrogen abundance trends.
Star formation history significantly affects N/O and O/H ratios.
Dispersion in data explained by different star formation scenarios.
Abstract
We analyze the evolution of nitrogen resulting from a set of spiral and irregular galaxy models computed for a large number of input mass radial distributions and with various star formation efficiencies. We show that our models produce a nitrogen abundance evolution in good agreement with the observational data. Differences in the star formation histories of the regions and galaxies modeled are essential to reproduce the observational data in the N/O-O/H plane and the corresponding dispersion.
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Taxonomy
TopicsAstronomy and Astrophysical Research · Galaxies: Formation, Evolution, Phenomena · Stellar, planetary, and galactic studies