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

【摘要】：太陽(yáng)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(duì)太陽(yáng)系外行星系統(tǒng)的研究也為我們探究太陽(yáng)系自身的形成與演化提供了更多樣本。 對(duì)系外行星系統(tǒng)的凌食事件進(jìn)行測(cè)光觀測(cè)是獲取行星系統(tǒng)物理參數(shù)的特別重要的方法。通過對(duì)凌食事件的光變曲線進(jìn)行分析，能夠獲得行星的半徑和軌道傾角。加上對(duì)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(duì)已知系外行星系統(tǒng)的凌食事件進(jìn)行長(zhǎng)期監(jiān)測(cè)，還可以探測(cè)其Transit TimingVariation（TTV）和Transit Duration Variation（TDV）信號(hào)，進(jìn)而對(duì)系統(tǒng)中尚未被發(fā)現(xiàn)的其他行星天體進(jìn)行探測(cè)與研究。 在2010年到2012年期間，我們利用云南天文臺(tái)的1m望遠(yuǎn)鏡及香港HokoonNature Education cum Astronomical Centre的0.5m望遠(yuǎn)鏡，對(duì)太陽(yáng)系外行星系統(tǒng)WASP-32的凌食事件進(jìn)行了測(cè)光觀測(cè)。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(duì)測(cè)光數(shù)據(jù)中的系統(tǒng)誤差進(jìn)行了改正。通過聯(lián)合文獻(xiàn)中的視向速度曲線、光變曲線以及我們新觀測(cè)的光變曲線，我們用Markov Chain Monte Carlo（MCMC）技術(shù)對(duì)系統(tǒng)的物理參數(shù)進(jìn)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(rèn)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(tuán)隊(duì)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(duì)所有完整且對(duì)稱的光變曲線的凌食中心時(shí)刻進(jìn)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(xué)位授予單位】：中國(guó)科學(xué)院研究生院（云南天文臺(tái)）
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：P125.8

【參考文獻(xiàn)】

相關(guān)期刊論文 前3條

1 劉玉娟,趙剛;太陽(yáng)系外恒星行星系統(tǒng)的探測(cè)與研究進(jìn)展[J];天文學(xué)進(jìn)展;2005年03期

2 趙佳;趙剛;;太陽(yáng)系外行星系統(tǒng)軌道參數(shù)的統(tǒng)計(jì)研究[J];天文學(xué)進(jìn)展;2012年01期

3 譚泓博;王曉彬;顧盛宏;Andrew Collier Cameron;;系外行星系統(tǒng)HAT-P-8凌食事件的測(cè)光觀測(cè)研究[J];天文學(xué)報(bào);2013年06期

本文編號(hào)：1878026