Structural Properties of Spherical Galaxies: a Semi-Analytical Approach
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| Format: | Artículo científico |
| Language: | en |
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Universidad Nacional Autónoma de México
2004
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| _version_ | 1876476751025012736 |
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| author | E. Simonneau |
| author_facet | E. Simonneau |
| contents | Structural Properties of Spherical Galaxies: a Semi-Analytical Approach E. Simonneau F. Prada Física, Astronomía y Matemáticas GALAXIES: STRUCTURE GALAXIES: ELLIPTICAL GALAXIES: KINEMATICS AND DYNAMICS Since the distribution of light measured along any galactocentric radius of anelliptical galaxy has the same functional form exp[_R1=n] (Sérsic profile) for almostall galaxies, and since this profile is the Abel integral of the luminous density,it looks worth-while to seek the way to derive the latter from the former. Wepropose in this paper a discrete ordinate" method, which yields, for any value ofn > 1, an explicit expression for the luminous density, pL(r), that can be evaluatednumerically to any required degree of precision. Once we have obtained such anexpresion for the spatial density, pL(r), we can compute straightforwardly the massdistribution, M(r), the potential, o(r), and the velocity dispersions, o2s (r), in spaceand on the observational plane, o2p(R). 2004 artículo científico 0185-1101 https://www.redalyc.org/articulo.oa?id=57140108 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.40 |
| format | Artículo científico |
| id | redalyc_57140108 |
| institution | Redalyc |
| language | en |
| publishDate | 2004 |
| publisher | Universidad Nacional Autónoma de México |
| spellingShingle | Structural Properties of Spherical Galaxies: a Semi-Analytical Approach E. Simonneau Física, Astronomía y Matemáticas GALAXIES: STRUCTURE GALAXIES: ELLIPTICAL GALAXIES: KINEMATICS AND DYNAMICS Structural Properties of Spherical Galaxies: a Semi-Analytical Approach E. Simonneau F. Prada Física, Astronomía y Matemáticas GALAXIES: STRUCTURE GALAXIES: ELLIPTICAL GALAXIES: KINEMATICS AND DYNAMICS Since the distribution of light measured along any galactocentric radius of anelliptical galaxy has the same functional form exp[_R1=n] (Sérsic profile) for almostall galaxies, and since this profile is the Abel integral of the luminous density,it looks worth-while to seek the way to derive the latter from the former. Wepropose in this paper a discrete ordinate" method, which yields, for any value ofn > 1, an explicit expression for the luminous density, pL(r), that can be evaluatednumerically to any required degree of precision. Once we have obtained such anexpresion for the spatial density, pL(r), we can compute straightforwardly the massdistribution, M(r), the potential, o(r), and the velocity dispersions, o2s (r), in spaceand on the observational plane, o2p(R). 2004 artículo científico 0185-1101 https://www.redalyc.org/articulo.oa?id=57140108 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.40 |
| title | Structural Properties of Spherical Galaxies: a Semi-Analytical Approach |
| topic | Física, Astronomía y Matemáticas GALAXIES: STRUCTURE GALAXIES: ELLIPTICAL GALAXIES: KINEMATICS AND DYNAMICS |
| url | https://www.redalyc.org/articulo.oa?id=57140108 |