Dynamical Models of Spherical Galaxies with Massive Halo
Using the Schwarzschild's linear programming technique, we obtained the general solutions of the collisionless Bolzmann equation describing the spherical galaxy in dynamical equilibrium. From this calculation we have confirmed the existence of isotropic spherical galaxies obeying a de Vaucouleu...
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| Format: | Article |
| Language: | English |
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The Korean Space Science Society
2003-03-01
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| Series: | Journal of Astronomy and Space Sciences |
| Subjects: | |
| Online Access: | http://ocean.kisti.re.kr/downfile/volume/kosss/OJOOBS/2003/v20n1/OJOOBS_2003_v20n1_63.pdf |
| _version_ | 1797370317961691136 |
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| author | Mun-Suk Chun Hun-Sung Ko Young-Jong Sohn |
| author_facet | Mun-Suk Chun Hun-Sung Ko Young-Jong Sohn |
| author_sort | Mun-Suk Chun |
| collection | DOAJ |
| description | Using the Schwarzschild's linear programming technique, we obtained the general solutions of the collisionless Bolzmann equation describing the spherical galaxy in dynamical equilibrium. From this calculation we have confirmed the existence of isotropic spherical galaxies obeying a de Vaucouleurs' law which includes a dark halo. The flattening profile of the velocity dispersion curve seen in the elliptical galaxies can be explained as the increase of mass to light ratio in this dark matter. The space density distribution of this dark matter shows that the core radius of the dark matter is smaller than the effective radius of the galaxy. |
| first_indexed | 2024-03-08T17:59:38Z |
| format | Article |
| id | doaj.art-d9c98f1b2735419691bc95956fecc6f0 |
| institution | Directory Open Access Journal |
| issn | 2093-5587 2093-1409 |
| language | English |
| last_indexed | 2024-03-08T17:59:38Z |
| publishDate | 2003-03-01 |
| publisher | The Korean Space Science Society |
| record_format | Article |
| series | Journal of Astronomy and Space Sciences |
| spelling | doaj.art-d9c98f1b2735419691bc95956fecc6f02024-01-02T02:51:56ZengThe Korean Space Science SocietyJournal of Astronomy and Space Sciences2093-55872093-14092003-03-01201638210.5140/JASS.2003.20.1.063Dynamical Models of Spherical Galaxies with Massive HaloMun-Suk Chun0Hun-Sung Ko1Young-Jong Sohn2Dept. of Astronomy, Yonsei University, Seoul 120-749, KoreaDept. of Astronomy, Yonsei University, Seoul 120-749, KoreaCenter for Space Astrophysics, Yonsei University, Seoul 120-749, KoreaUsing the Schwarzschild's linear programming technique, we obtained the general solutions of the collisionless Bolzmann equation describing the spherical galaxy in dynamical equilibrium. From this calculation we have confirmed the existence of isotropic spherical galaxies obeying a de Vaucouleurs' law which includes a dark halo. The flattening profile of the velocity dispersion curve seen in the elliptical galaxies can be explained as the increase of mass to light ratio in this dark matter. The space density distribution of this dark matter shows that the core radius of the dark matter is smaller than the effective radius of the galaxy.http://ocean.kisti.re.kr/downfile/volume/kosss/OJOOBS/2003/v20n1/OJOOBS_2003_v20n1_63.pdfspherical galaxydark matterdark halo |
| spellingShingle | Mun-Suk Chun Hun-Sung Ko Young-Jong Sohn Dynamical Models of Spherical Galaxies with Massive Halo Journal of Astronomy and Space Sciences spherical galaxy dark matter dark halo |
| title | Dynamical Models of Spherical Galaxies with Massive Halo |
| title_full | Dynamical Models of Spherical Galaxies with Massive Halo |
| title_fullStr | Dynamical Models of Spherical Galaxies with Massive Halo |
| title_full_unstemmed | Dynamical Models of Spherical Galaxies with Massive Halo |
| title_short | Dynamical Models of Spherical Galaxies with Massive Halo |
| title_sort | dynamical models of spherical galaxies with massive halo |
| topic | spherical galaxy dark matter dark halo |
| url | http://ocean.kisti.re.kr/downfile/volume/kosss/OJOOBS/2003/v20n1/OJOOBS_2003_v20n1_63.pdf |
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