| Texto completo | |
| Autor(es): |
Dors, Jr., O. L.
;
Arellano-Cordova, K. Z.
;
Cardaci, M. V.
;
Hagele, G. F.
Número total de Autores: 4
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Monthly Notices of the Royal Astronomical Society; v. 468, n. 1, p. L113-L117, JUN 2017. |
| Citações Web of Science: | 5 |
| Resumo | |
We obtained new quantitative determinations of the nitrogen abundance and a consistent relation between the nitrogen and oxygen abundances for a sample of Seyfert 2 galaxies located at redshift z < 0.1. We carried out this analysis using the CLOUDY code to build detailed photoionization models. We were able to reproduce observed optical narrow emission line intensities for 44 sources compiled from the literature. Our results show that Seyfert 2 nuclei have nitrogen abundances ranging from similar to 0.3 to similar to 7.5 times the solar value. We derived the relation log(N/H) = 1.05(+/- 0.09) x {[}log(O/H)] - 0.35(+/- 0.33). Results for N/O versus O/H abundance ratios derived for Seyfert 2 galaxies are in consonance with those recently derived for a sample of extragalactic disc HII regions with high metallicity. (AU) | |
| Processo FAPESP: | 16/04728-7 - Determinações de abundâncias químicas em AGNs |
| Beneficiário: | Oli Luiz Dors Junior |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |