Metallicity evolution of AGNs from UV emission lines based on a new index
We analysed the evolution of the metallicity of the gas with the redshift for a sample of AGNs in a very wide redshift range (0 < z < 4) using ultraviolet emission lines from the narrow-line regions (NLRs) and photoionization models. The new index C43 = log[(C IV+C III])/He II] is suggested as...
Guardado en:
| Autores principales: | Dors Jr., Oli L., Cardaci, Mónica Viviana, Hägele, Guillermo Federico, Krabbe, Â. C. |
|---|---|
| Formato: | Articulo |
| Lenguaje: | Inglés |
| Publicado: |
2014
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| Materias: | |
| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/85697 |
| Aporte de: |
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