| タイトル | Dynamic mass exchange in doubly degenerate binaries. I - 0.9 and 1.2 solar mass stars |
| 著者（英） | Bowers, R. L.; Cameron, A. G. W.; Press, W. H.; Benz, W. |
| 著者所属（英） | Los Alamos National Lab.|Harvard-Smithsonian Center for Astrophysics |
| 発行日 | 1990-01-10 |
| 言語 | eng |
| 内容記述 | The dynamic mass exchange process in doubly degenerate binaries was investigated using a three-dimensional numerical simulation of the evolution of a doubly degenerate binary system in which the primary is a 1.2-solar-mass white dwarf and the Roche lobe filling secondary is a 0.9-solar-mass dwarf. The results show that, in a little more than two orbital periods, the secondary is completely destroyed and transformed into a thick disk orbiting about the primary. Since only a very small fraction of the mass (0.0063 solar mass) escapes the system, the evolution of the binary results in the formation of a massive object. This object is composed of three parts, the initial white dwarf primary, a very hot pressure-supported spherical envelope, and a rotationally supported outer disk. The evolution of the system can be understood in terms of a simple analytical model where it is shown that the angular momentum carried by the mass during the transfer and stored in the disk determines the evolution of the system. |
| NASA分類 | ASTROPHYSICS |
| レポートNO | 90A21079 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/358666 |
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