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第7讲-外行星的直接成像Lecture 7 - Direct Imaging of Exoplanets |
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| 课程网址: | http://videolectures.net/yaleastr160s07_bailyn_lec07/ |
| 主讲教师: | Charles Bailyn |
| 开课单位: | 耶鲁大学 |
| 开课时间: | 2009-11-24 |
| 课程语种: | 英语 |
| 中文简介: |  |
| 课程简介: | Class begins with a problem on transits and learning what information astronomers obtain through observing them. For example, radii of stars can be estimated. Furthermore, applying the Doppler shift method, one can find the mass of a star. Finally, a star's density can be calculated. A second method for identifying planets around stars is introduced: the astrometry method. The method allows for an extremely accurate assessment of a star's precise position in the sky. Special features of the astrometry method are discussed and a number of problems are solved. A short summary is given on the three methods astronomers use to identify exoplanets. Class ends with an overview of upcoming space missions and the hope of detecting the presence of biological activity on other planet. |
| 关 键 词: | 凌日问题; 天体测量法; 系外行星 |
| 课程来源: | 视频讲座网 |
| 数据采集: | 2023-03-24：chenjy |
| 最后编审: | 2023-05-13：chenjy |
| 阅读次数: | 23 |