研究生: |
陳姝瑾 Shu-Chin Chen |
---|---|
論文名稱: |
The Transit Models of Extra-Solar Planetary Systems 系外行星的凌日軌道模型 |
指導教授: |
江瑛貴
Ing-Guey Jiang |
口試委員: | |
學位類別: |
碩士 Master |
系所名稱: |
理學院 - 天文研究所 Institute of Astronomy |
論文出版年: | 2008 |
畢業學年度: | 96 |
語文別: | 英文 |
論文頁數: | 50 |
中文關鍵詞: | 系外行星 |
外文關鍵詞: | extra-solar planets, transit |
相關次數: | 點閱:1 下載:0 |
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當行星通過其恆星盤面時, 恆星的亮度會下降, 我們稱其現象為 ”凌日”. 最近,凌日法成為一種尋找太陽系外行星的普遍方式. 許多被證實的行星系統顯示, 恆星的 ”臨邊昏暗效應” 是重要且不可被忽略的. 我們希望發展出一種方法, 建立一種囊括了 ”臨邊昏暗效應” 的凌日光度曲線理論模型. 透過我們的方法, OGLE-TR-211行星系統的觀測資料可以決定行星的物理和軌道參數. 此外, 我們計算出最佳的軌道參數,和參數平面在90%的信心區域. 再者, 我們研究了恆星的徑向速度. 我們主要是利用徑向速度來決定行星的質量.
The transit, i.e. the flux-drop of a star due to the passing of a planet, has recently become one of the most popular methods in the search of extra-solar planets,
and those confirmed cases show that the limb-darkening effect is important and cannot be ignored. We here develop a method to do the theoretical modeling of the transit light curves when the limb-darkening is included. Through our method, the observational data of a few planetary systems is used to determine the physical and orbital parameters. In addition to the best fitting parameters of planetary systems, the regions of the parameter space at different confidence levels will be presented. Finally, the effects of additional data of the host star's radial velocities are also investigated.
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