Narrow-line seyfert 1 galaxies: the [O III] λ5007/Hβ ratio and photoionization models for the nlr
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| Format: | Artículo científico |
| Sprache: | en |
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Universidad Nacional Autónoma de México
2000
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| _version_ | 1876460417527578624 |
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| author | Alberto Ardila Rodríguez |
| author_facet | Alberto Ardila Rodríguez |
| contents | Narrow-line seyfert 1 galaxies: the [O III] λ5007/Hβ ratio and photoionization models for the nlr Alberto Ardila Rodríguez Miriani G. Pastoriza Carlos J. Donzelli Luc Binette Física, Astronomía y Matemáticas RAYS: GALAXIES GALAXIES: SEYFERTS We study optical proles and the physical conditions of the narrow line region(NLR) of narrow-line Seyfert 1 galaxies (NLS1s). Our results show that the uxcarried out by the narrow component of H can be up to 10 times higher thanthe value usually adopted in the literature. As a result, the [O III] 5007/Hratio emitted in the NLR varies from 1 to 5, instead of the universally adoptedvalue of 10. We test photoionization models that consider a NLR composed of acombination of matter-bounded and ionization-bounded clouds and show that thisscenario reproduces with very good agreement the observed emission lines ratiosof NLS1s. We propose that the peculiar properties of the NLR of NLS1s can beexplained by a steep continuum of power-law form in the EUV{soft X-ray region,with spectral index 2000 artículo científico 0185-1101 https://www.redalyc.org/articulo.oa?id=57100980 en http://www.redalyc.org/revista.oa?id=571 Revista Mexicana de Astronomía y Astrofísica application/pdf Universidad Nacional Autónoma de México Revista Mexicana de Astronomía y Astrofísica (México) Vol.9 |
| format | Artículo científico |
| id | redalyc_57100980 |
| institution | Redalyc |
| language | en |
| publishDate | 2000 |
| publisher | Universidad Nacional Autónoma de México |
| spellingShingle | Narrow-line seyfert 1 galaxies: the [O III] λ5007/Hβ ratio and photoionization models for the nlr Alberto Ardila Rodríguez Física, Astronomía y Matemáticas RAYS: GALAXIES GALAXIES: SEYFERTS Narrow-line seyfert 1 galaxies: the [O III] λ5007/Hβ ratio and photoionization models for the nlr Alberto Ardila Rodríguez Miriani G. Pastoriza Carlos J. Donzelli Luc Binette Física, Astronomía y Matemáticas RAYS: GALAXIES GALAXIES: SEYFERTS We study optical proles and the physical conditions of the narrow line region(NLR) of narrow-line Seyfert 1 galaxies (NLS1s). Our results show that the uxcarried out by the narrow component of H can be up to 10 times higher thanthe value usually adopted in the literature. As a result, the [O III] 5007/Hratio emitted in the NLR varies from 1 to 5, instead of the universally adoptedvalue of 10. We test photoionization models that consider a NLR composed of acombination of matter-bounded and ionization-bounded clouds and show that thisscenario reproduces with very good agreement the observed emission lines ratiosof NLS1s. We propose that the peculiar properties of the NLR of NLS1s can beexplained by a steep continuum of power-law form in the EUV{soft X-ray region,with spectral index 2000 artículo científico 0185-1101 https://www.redalyc.org/articulo.oa?id=57100980 en http://www.redalyc.org/revista.oa?id=571 Revista Mexicana de Astronomía y Astrofísica application/pdf Universidad Nacional Autónoma de México Revista Mexicana de Astronomía y Astrofísica (México) Vol.9 |
| title | Narrow-line seyfert 1 galaxies: the [O III] λ5007/Hβ ratio and photoionization models for the nlr |
| topic | Física, Astronomía y Matemáticas RAYS: GALAXIES GALAXIES: SEYFERTS |
| url | https://www.redalyc.org/articulo.oa?id=57100980 |