本文選題：太陽系外行星 + WASP-32b��； 參考：《中國科學院研究生院（云南天文臺）》2014年碩士論文

【摘要】：太陽系外行星系統(tǒng)的物理參數(shù)在研究行星系統(tǒng)的形成與演化上扮演著極其重要的角色，而對太陽系外行星系統(tǒng)的研究也為我們探究太陽系自身的形成與演化提供了更多樣本。 對系外行星系統(tǒng)的凌食事件進行測光觀測是獲取行星系統(tǒng)物理參數(shù)的特別重要的方法。通過對凌食事件的光變曲線進行分析，能夠獲得行星的半徑和軌道傾角。加上對視向速度曲線的分析，就可以得到行星的質(zhì)量和其他物理參數(shù)，而這些系統(tǒng)參數(shù)又是理解行星結(jié)構(gòu)、形成及演化的關(guān)鍵參數(shù)。此外，，通過對已知系外行星系統(tǒng)的凌食事件進行長期監(jiān)測，還可以探測其Transit TimingVariation（TTV）和Transit Duration Variation（TDV）信號，進而對系統(tǒng)中尚未被發(fā)現(xiàn)的其他行星天體進行探測與研究。 在2010年到2012年期間，我們利用云南天文臺的1m望遠鏡及香港HokoonNature Education cum Astronomical Centre的0.5m望遠鏡，對太陽系外行星系統(tǒng)WASP-32的凌食事件進行了測光觀測。為了提高凌食光變曲線的信噪比，我們利用coarse de-correlation和SYSREM方法對測光數(shù)據(jù)中的系統(tǒng)誤差進行了改正。通過聯(lián)合文獻中的視向速度曲線、光變曲線以及我們新觀測的光變曲線，我們用Markov Chain Monte Carlo（MCMC）技術(shù)對系統(tǒng)的物理參數(shù)進行了分析求解。與前人的分析結(jié)果相比，我們的新結(jié)果確認了行星的公轉(zhuǎn)軌道為圓軌道(e=0)；新得到的行星系統(tǒng)物理參數(shù)解決了以前不同研究團隊研究結(jié)果不一致的問題，并且我們的研究結(jié)果整體精度更高。通過對所有完整且對稱的光變曲線的凌食中心時刻進行分析，我們得到了WASP-32b更加精確的軌道周期，到目前為止，在這些凌食事件中沒有發(fā)現(xiàn)明顯的TTV現(xiàn)象。
[Abstract]:The physical parameters of the extrasolar planetary system play an important role in the formation and evolution of the planetary system, and the study of the extrasolar planetary system provides us with more samples to study the formation and evolution of the solar system itself. Photometry is a very important method for obtaining physical parameters of exoplanet system. The radius of the planet and the inclination of the orbit can be obtained by analyzing the light variation curve of the transit event. Combined with the analysis of the apparent velocity curve, the mass and other physical parameters of the planets can be obtained, and these parameters are the key parameters for understanding the structure, formation and evolution of the planets. In addition, through the long-term monitoring of the transgression events of the known exoplanet system, the signals of Transit timing variation TTV) and Transit Duration variation TV) can be detected, and then other planetary celestial bodies which have not been found in the system can be detected and studied. From 2010 to 2012, we made use of the 1m telescope of Yunnan Observatory and the 0.5m telescope of Hong Kong HokoonNature Education cum Astronomical Centre to measure the transgression events of the extrasolar planetary system WASP-32. In order to improve the signal-to-noise ratio (SNR) of the luminous curve, the systematic errors in the photometric data were corrected by coarse de-correlation and SYSREM methods. The physical parameters of the system are analyzed and solved by combining the apparent velocity curve, the light variation curve and the new observational curve in the literature. The physical parameters of the system are analyzed and solved by using the Markov Chain Monte Carlos MCMC technique. Compared with the previous analysis results, our new results confirm that the orbit of the planets is a circular orbit, and the new physical parameters of the planetary system solve the problem that the previous results of different research teams are inconsistent. And the overall accuracy of our research results is higher. By analyzing all the complete and symmetrical optical transition curves, we get a more accurate orbital period of WASP-32b. Up to now, no obvious TTV phenomenon has been found in these transgressions.
【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】：2014
【分類號】：P125.8

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