Chemical Abundances of NGC 5461 and NGC 5471 Derived from Echelle Spectrophotometry
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| Formato: | Artículo científico |
| Lenguaje: | en |
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Universidad Nacional Autónoma de México
2002
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| _version_ | 1876436708694687744 |
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| author | Antonio Peimbert |
| author_facet | Antonio Peimbert |
| contents | Chemical Abundances of NGC 5461 and NGC 5471 Derived from Echelle Spectrophotometry Antonio Peimbert Manuel Peimbert C. Esteban V. Luridiana Física, Astronomía y Matemáticas NGC 5471) H II REGIONS ISM: ABUNDANCES ISM: INDIVIDUAL (NGC 5461 We present high resolution spectroscopic data of the two giant extragalacticH II regions NGC 5461 and NGC 5471 in M101, which have been obtained with the2.1-m telescope of the Observatorio Astronómico Nacional in San Pedro Mártir,Baja California. We measured the intensities of several H and He recombinationlines, and of forbidden lines of a large number of ions. We calculate the physicalconditions in the two nebulae with a large number of diagnostics and determinetheir chemical abundances by applying ionization correction factors (icf`s) to theobserved ionic abundances. For NGC 5461, the icf``s are based on a tailored photoionizationmodel of the region (Luridiana & Peimbert 2001), while for NGC 5471they are computed from those predicted by a photoionization model of NGC 2363(Luridiana, Peimbert, & Leitherer 1999), a region which is similar to NGC 5471 inthe ionization structure. For both regions, the icf `s are compared to those computedfollowing the prescriptions by Mathis & Rosa (1991). Such comparison showslarge discrepancies for several elements, including nitrogen, neon, and chlorine. 2002 artículo científico 0185-1101 https://www.redalyc.org/articulo.oa?id=57138110 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) Num.1 Vol.38 |
| format | Artículo científico |
| id | redalyc_57138110 |
| institution | Redalyc |
| language | en |
| publishDate | 2002 |
| publisher | Universidad Nacional Autónoma de México |
| spellingShingle | Chemical Abundances of NGC 5461 and NGC 5471 Derived from Echelle Spectrophotometry Antonio Peimbert Física, Astronomía y Matemáticas NGC 5471) H II REGIONS ISM: ABUNDANCES ISM: INDIVIDUAL (NGC 5461 Chemical Abundances of NGC 5461 and NGC 5471 Derived from Echelle Spectrophotometry Antonio Peimbert Manuel Peimbert C. Esteban V. Luridiana Física, Astronomía y Matemáticas NGC 5471) H II REGIONS ISM: ABUNDANCES ISM: INDIVIDUAL (NGC 5461 We present high resolution spectroscopic data of the two giant extragalacticH II regions NGC 5461 and NGC 5471 in M101, which have been obtained with the2.1-m telescope of the Observatorio Astronómico Nacional in San Pedro Mártir,Baja California. We measured the intensities of several H and He recombinationlines, and of forbidden lines of a large number of ions. We calculate the physicalconditions in the two nebulae with a large number of diagnostics and determinetheir chemical abundances by applying ionization correction factors (icf`s) to theobserved ionic abundances. For NGC 5461, the icf``s are based on a tailored photoionizationmodel of the region (Luridiana & Peimbert 2001), while for NGC 5471they are computed from those predicted by a photoionization model of NGC 2363(Luridiana, Peimbert, & Leitherer 1999), a region which is similar to NGC 5471 inthe ionization structure. For both regions, the icf `s are compared to those computedfollowing the prescriptions by Mathis & Rosa (1991). Such comparison showslarge discrepancies for several elements, including nitrogen, neon, and chlorine. 2002 artículo científico 0185-1101 https://www.redalyc.org/articulo.oa?id=57138110 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) Num.1 Vol.38 |
| title | Chemical Abundances of NGC 5461 and NGC 5471 Derived from Echelle Spectrophotometry |
| topic | Física, Astronomía y Matemáticas NGC 5471) H II REGIONS ISM: ABUNDANCES ISM: INDIVIDUAL (NGC 5461 |
| url | https://www.redalyc.org/articulo.oa?id=57138110 |