【摘要】：太陽系外行星系統(tǒng)參數(shù)的觀測研究對理解行星系統(tǒng)的形成和演化有著不可或缺的重要性；同時也為人類理解太陽系的形成和演化提供了更多可比較和借鑒的樣本。 對凌食系外行星的凌食事件進行測光觀測是獲得行星系統(tǒng)參數(shù)的一種重要方法。通過分析凌食事件的光變曲線，能夠求解出行星的半徑和軌道傾角等重要系統(tǒng)參數(shù)，加上視向速度法得到的質量函數(shù)M sini，還能夠計算行星的質量。而由行星的半徑及質量決定的密度是理解行星形成的重要數(shù)據(jù)。此外，通過對已知凌食太陽系外行星系統(tǒng)進行長期后續(xù)觀測，還可以探測其TTV(Transit Timing Variation)和TDV(Transit Duration Variation)信號以用于探索系統(tǒng)中是否有其它未被發(fā)現(xiàn)的行星。 本論文的主要工作是利用云南天文臺現(xiàn)有的1m望遠鏡(昆明)及2.4m望遠鏡(麗江)，，[糲低廡行竅低矵AT-P-8進行凌食事件的高精度測光觀測和參數(shù)研究。使用Collier Cameron的coarse de-correlation和Tamuz的SYSREM兩種方法對測光數(shù)據(jù)中的系統(tǒng)誤差進行改正，得到了高信噪比的凌食光變曲線。進一步的，通過應用MCMC(Markov Chain Monte Carlo)方法分析凌食光變曲線，獲得行星系統(tǒng)參數(shù)，并探尋系統(tǒng)中是否存在TTV信號。
[Abstract]:The observational study of the parameters of extrasolar planetary system is indispensable to understand the formation and evolution of planetary system, and it also provides more comparable and referential samples for human understanding of the formation and evolution of the solar system. It is an important method to obtain planetary system parameters by photometric observation of the transgression events of exoplanets. By analyzing the light variation curve of the transit event, the important system parameters, such as the radius of the planet and the inclination angle of the orbit, can be solved, and the mass function M sini, obtained by the apparent velocity method can also be used to calculate the mass of the planet. The density determined by the radius and mass of the planet is an important data for understanding the formation of planets. In addition, the TTV (Transit Timing Variation) and TDV (Transit Duration Variation) signals can be detected by long-term follow-up observations of the known exoplanet system, which can be used to find out if there are other undiscovered planets in the system. The main work of this paper is to use the existing 1m telescope (Kunming) and 2.4 m telescope (Lijiang) of Yunnan Observatory. The high precision photometric observation and parameter study of the feeding event were carried out by AT-P-8. The system error of photometry data is corrected by Collier Cameron coarse de-correlation and Tamuz SYSREM, and the high SNR optical transit curve is obtained. Furthermore, the planetary system parameters are obtained by using the MCMC (Markov Chain Monte Carlo) method to analyze the light variation curve of the system and to find out whether there is a TTV signal in the system.
【學位授予單位】：中國科學院研究生院（云南天文臺）
【學位級別】：碩士
【學位授予年份】：2013
【分類號】：P125

【參考文獻】

相關期刊論文 前1條

1 劉玉娟,趙剛;太陽系外恒星行星系統(tǒng)的探測與研究進展[J];天文學進展;2005年03期

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