Chemical evolution of galaxies
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| Format: | Artículo científico |
| Sprache: | en |
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Universidad Nacional Autónoma de México
2002
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| _version_ | 1876434573213040640 |
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| author | Gregory A. Shields |
| author_facet | Gregory A. Shields |
| contents | Chemical evolution of galaxies Gregory A. Shields Física, Astronomía y Matemáticas ISM: ABUNDANCES STARS: ABUNDANCES GALAXIES: EVOLUTION GALAXIES: ABUNDANCES Chemical abundances provide important clues to the evolution of galaxies. Ionized nebulae are one of themain sources of chemical abundance measurements, especially in external galaxies. Studies of H II regionshave shown that the overall metallicity of galaxies increases with galactic luminosity, and that spiral galaxiescharacteristically have radial gradients in chemical composition. There are indications of environmental inuenceson chemical abundances. Planetary nebulae provide another measure of abundances in the Milky Wayand other galaxies. Space facilities have allowed measurements for elements that are inaccessible at opticalwavelengths. Large telescopes make possible the study of individual stars in external galaxies and the study ofinterstellar abundances in galaxies at intermediate and high redshifts. These advances promise exciting timesas astrophysicists strive to paint a complete picture of galactic evolution from the Big Bang to the present. 2002 artículo científico 0185-1101 https://www.redalyc.org/articulo.oa?id=57112078 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.12 |
| format | Artículo científico |
| id | redalyc_57112078 |
| institution | Redalyc |
| language | en |
| publishDate | 2002 |
| publisher | Universidad Nacional Autónoma de México |
| spellingShingle | Chemical evolution of galaxies Gregory A. Shields Física, Astronomía y Matemáticas ISM: ABUNDANCES STARS: ABUNDANCES GALAXIES: EVOLUTION GALAXIES: ABUNDANCES Chemical evolution of galaxies Gregory A. Shields Física, Astronomía y Matemáticas ISM: ABUNDANCES STARS: ABUNDANCES GALAXIES: EVOLUTION GALAXIES: ABUNDANCES Chemical abundances provide important clues to the evolution of galaxies. Ionized nebulae are one of themain sources of chemical abundance measurements, especially in external galaxies. Studies of H II regionshave shown that the overall metallicity of galaxies increases with galactic luminosity, and that spiral galaxiescharacteristically have radial gradients in chemical composition. There are indications of environmental inuenceson chemical abundances. Planetary nebulae provide another measure of abundances in the Milky Wayand other galaxies. Space facilities have allowed measurements for elements that are inaccessible at opticalwavelengths. Large telescopes make possible the study of individual stars in external galaxies and the study ofinterstellar abundances in galaxies at intermediate and high redshifts. These advances promise exciting timesas astrophysicists strive to paint a complete picture of galactic evolution from the Big Bang to the present. 2002 artículo científico 0185-1101 https://www.redalyc.org/articulo.oa?id=57112078 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.12 |
| title | Chemical evolution of galaxies |
| topic | Física, Astronomía y Matemáticas ISM: ABUNDANCES STARS: ABUNDANCES GALAXIES: EVOLUTION GALAXIES: ABUNDANCES |
| url | https://www.redalyc.org/articulo.oa?id=57112078 |