| タイトル | The gravitational collapse of gaseous spheres and galaxy formation |
| 著者（英） | Lufkin, Eric A.; Chevalier, Roger A. |
| 著者所属（英） | Virginia Univ. |
| 発行日 | 1990-06-10 |
| 言語 | eng |
| 内容記述 | The spherical collapse of a gas cloud initially in hydrostatic equilibrium is examined using self-similar solutions. It is found that the collapse of gas clouds to form galaxies can occur on a hydrodynamic time scale only if the gas dominates the gravitational field and the inflow forms a central dominant mass. The likelihood of a collisionless component and the observation of extended mass distributions in galaxies implies that the collapse of a hot protogalactic cloud is cooling-regulated. The formation of the Galaxy from an initially smooth, hot cloud is examined, showing that some nonlinear substructure must initially be present. |
| NASA分類 | ASTROPHYSICS |
| レポートNO | 90A36630 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/356000 |
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