| タイトル | A high-resolution study of the gas flow in barred spirals |
| 著者（英） | Van Albada, G. D.; Roberts, W. W., Jr. |
| 著者所属（英） | National Radio Astronomy Observatory|NASA Langley Research Center|Virginia Univ. |
| 発行日 | 1981-06-15 |
| 言語 | eng |
| 内容記述 | The considered investigation is concerned with conditions in that type of spiral galaxy which is known as a 'barred spiral'. The lack of star formation and the smoothness of the dark dust lanes may indicate that the bar region is pervaded by a more homogeneous interstellar medium with a lower viscosity than that characteristic of the outer regions. The effects of such a reduced viscosity are investigated on the basis of high-resolution time-dependent gasdynamical equations. Calculations modeling the gas flow in a given bar potential are presented. The calculations were performed on grids with various mesh sizes and consequently had different resolutions and numerical viscosities. A reduction in the numerical diffusion and viscosity was accompanied by changes in the flow pattern, including the appearance of a strong shock in the bar region and the occurrence of postshock outflow. |
| NASA分類 | ASTRONOMY |
| レポートNO | 81A39788 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/416034 |
