Deep vlt spectroscopy of high redshift radio galaxy MRC 2104{242: evidence for a metallicity gradient
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| Formato: | Artículo científico |
| Lenguaje: | en |
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Universidad Nacional Autónoma de México
2002
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| _version_ | 1866814339888971776 |
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| author | R. Overzier |
| author_facet | R. Overzier |
| contents | Deep vlt spectroscopy of high redshift radio galaxy MRC 2104{242: evidence for a metallicity gradient R. Overzier J. Kurk C. De Breuck H. J. A. Röttgering Física, Astronomía y Matemáticas TION GALAXIES: EVOLU GALAXIES: ACTIVE COSMOLOGY: EARLY UNIVERSE GALAXIES: KINEMATICS AND DYNAMICS In this contribution we will present deep VLT spectroscopy observations of the giant emission line halo aroundthe z = 2:49 radio galaxy MRC 2104{242. The morphology of the halo is dominated by two spatially resolvedregions. Ly is extended by > 1200 along the radio axis, C IV 1549 and He II 1640 are extended by 800.The overall spectrum is typical for that of high redshift radio galaxies. Interestingly, N V 1240 is presentin the spectrum of the region associated with the center of the galaxy hosting the radio source, the northernregion, while absent in the southern region. Using a simple photoionization model, the di erence in N V 1240emission can be explained due to a metallicity gradient within the halo. This is consistent with a scenarioin which the halo is formed by a massive cooling ow or originates from the debris of the merging of two ormore galaxies. However, other mechanisms, such as jet-cloud interactions or starburst-winds, could also beimportant. 2002 artículo científico 0185-1101 https://www.redalyc.org/articulo.oa?id=57101337 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_57101337 |
| language | en |
| publishDate | 2002 |
| publisher | Universidad Nacional Autónoma de México |
| spellingShingle | Deep vlt spectroscopy of high redshift radio galaxy MRC 2104{242: evidence for a metallicity gradient R. Overzier Física, Astronomía y Matemáticas TION GALAXIES: EVOLU GALAXIES: ACTIVE COSMOLOGY: EARLY UNIVERSE GALAXIES: KINEMATICS AND DYNAMICS Deep vlt spectroscopy of high redshift radio galaxy MRC 2104{242: evidence for a metallicity gradient R. Overzier J. Kurk C. De Breuck H. J. A. Röttgering Física, Astronomía y Matemáticas TION GALAXIES: EVOLU GALAXIES: ACTIVE COSMOLOGY: EARLY UNIVERSE GALAXIES: KINEMATICS AND DYNAMICS In this contribution we will present deep VLT spectroscopy observations of the giant emission line halo aroundthe z = 2:49 radio galaxy MRC 2104{242. The morphology of the halo is dominated by two spatially resolvedregions. Ly is extended by > 1200 along the radio axis, C IV 1549 and He II 1640 are extended by 800.The overall spectrum is typical for that of high redshift radio galaxies. Interestingly, N V 1240 is presentin the spectrum of the region associated with the center of the galaxy hosting the radio source, the northernregion, while absent in the southern region. Using a simple photoionization model, the di erence in N V 1240emission can be explained due to a metallicity gradient within the halo. This is consistent with a scenarioin which the halo is formed by a massive cooling ow or originates from the debris of the merging of two ormore galaxies. However, other mechanisms, such as jet-cloud interactions or starburst-winds, could also beimportant. 2002 artículo científico 0185-1101 https://www.redalyc.org/articulo.oa?id=57101337 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 | Deep vlt spectroscopy of high redshift radio galaxy MRC 2104{242: evidence for a metallicity gradient |
| topic | Física, Astronomía y Matemáticas TION GALAXIES: EVOLU GALAXIES: ACTIVE COSMOLOGY: EARLY UNIVERSE GALAXIES: KINEMATICS AND DYNAMICS |
| url | https://www.redalyc.org/articulo.oa?id=57101337 |