Evidence for jet-cloud interactions in high-redshift radio galaxies
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| Format: | Artículo científico |
| Langue: | en |
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Universidad Nacional Autónoma de México
2002
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| _version_ | 1876471313421303808 |
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| author | D. J. Axon |
| author_facet | D. J. Axon |
| contents | Evidence for jet-cloud interactions in high-redshift radio galaxies D. J. Axon C. Solórzano C. N. Tadhunter Física, Astronomía y Matemáticas ICS GALAXIES: JETS GALAXIES: ACTIVE GALAXIES: KINEMATICS AND DYNAM We report the results obtained from a study, based on long-slit spectroscopy, of the kinematics and ionizationmechanisms of the line-emitting gas for a sample of ve high/intermediate-redshift radio galaxies. In two of thegalaxies (3C352 and 3C435A) the radio sources are of the same scale as the emission-line regions, whereas inthe other three (3C34, 3C265 and 3C330) the radio sources are extended on a larger scale than the emission-linestructures. We see evidence for shock-acceleration of the emission-line gas in the extended regions of all thegalaxies, even in the largest radio sources of our sample, in which the radio hot spots have passed the extendedgas of the galaxies. The extended regions present highly disturbed kinematics (line-splitting and/or underlyingbroad components), which are dicult to explain if we do not consider a strong interaction between the radioemittingcomponents and the ambient gas. However, the dominant ionization mechanism of the line-emittinggas remains uncertain. We have compared the optical diagnostic line ratios of the galaxies in our sample withboth photoionization from the active galactic nucleus (AGN) and shock-ionization models. We nd a lackof consistency in explaining the main ionization mechanism. This suggests that, if the extended regions areshock-ionized, some of the asumptions implicit in the models may need to be reconsidered. 2002 artículo científico 0185-1101 https://www.redalyc.org/articulo.oa?id=57101338 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.13 |
| format | Artículo científico |
| id | redalyc_57101338 |
| institution | Redalyc |
| language | en |
| publishDate | 2002 |
| publisher | Universidad Nacional Autónoma de México |
| spellingShingle | Evidence for jet-cloud interactions in high-redshift radio galaxies D. J. Axon Física, Astronomía y Matemáticas ICS GALAXIES: JETS GALAXIES: ACTIVE GALAXIES: KINEMATICS AND DYNAM Evidence for jet-cloud interactions in high-redshift radio galaxies D. J. Axon C. Solórzano C. N. Tadhunter Física, Astronomía y Matemáticas ICS GALAXIES: JETS GALAXIES: ACTIVE GALAXIES: KINEMATICS AND DYNAM We report the results obtained from a study, based on long-slit spectroscopy, of the kinematics and ionizationmechanisms of the line-emitting gas for a sample of ve high/intermediate-redshift radio galaxies. In two of thegalaxies (3C352 and 3C435A) the radio sources are of the same scale as the emission-line regions, whereas inthe other three (3C34, 3C265 and 3C330) the radio sources are extended on a larger scale than the emission-linestructures. We see evidence for shock-acceleration of the emission-line gas in the extended regions of all thegalaxies, even in the largest radio sources of our sample, in which the radio hot spots have passed the extendedgas of the galaxies. The extended regions present highly disturbed kinematics (line-splitting and/or underlyingbroad components), which are dicult to explain if we do not consider a strong interaction between the radioemittingcomponents and the ambient gas. However, the dominant ionization mechanism of the line-emittinggas remains uncertain. We have compared the optical diagnostic line ratios of the galaxies in our sample withboth photoionization from the active galactic nucleus (AGN) and shock-ionization models. We nd a lackof consistency in explaining the main ionization mechanism. This suggests that, if the extended regions areshock-ionized, some of the asumptions implicit in the models may need to be reconsidered. 2002 artículo científico 0185-1101 https://www.redalyc.org/articulo.oa?id=57101338 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.13 |
| title | Evidence for jet-cloud interactions in high-redshift radio galaxies |
| topic | Física, Astronomía y Matemáticas ICS GALAXIES: JETS GALAXIES: ACTIVE GALAXIES: KINEMATICS AND DYNAM |
| url | https://www.redalyc.org/articulo.oa?id=57101338 |