| タイトル | Origin and evolution of the giant planets |
| 著者（英） | Bodenheimer, P. |
| 著者所属（英） | Lick Observatory|NASA Ames Research Center |
| 発行日 | 1982-01-01 |
| 言語 | eng |
| 内容記述 | A discussion is presented of two major giant planet origin hypotheses: (1) protoplanet formation in the solar nebula in the form of a gravitationally unstable, gaseous subcondensation, subsequently evolving as a chemically homogeneous object until a stage at which a solid core may form; and (2) solid core formation by accumulation of planetesimals, followed by the accretion of solar-composition gas onto the core until it becomes unstable to collapse. Under either of the scenarios, evolution is found to comprise an early, cool phase in hydrostatic equilibrium, a hydrodynamic collapse, and a final phase of hydrostatic contraction and cooling to the present state. Attention is given to the physical processes that are most important in the determination of evolutionary characteristics. A concluding note on the cases of Uranus and Neptune is also given. |
| NASA分類 | LUNAR AND PLANETARY EXPLORATION |
| レポートNO | 82A38503 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/409713 |
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