The refined physical parameters of transiting exoplanet system HAT-P-24

作     者：Xiao-Bin Wang Sheng-Hong Gu Andrew Collier Cameron Hong-Bo Tan Ho-Keung Hui Chi-Tai Kwok Bill Yeung Kam-Cheung 

作者机构：National Astronomical Observatories/Yunnan Observatory Chinese Academy of Sciences Key Laboratory for the Structure and Evolution of Celestial Objects Chinese Academy of Sciences School of Physics and Astronomy University of St Andrews North Haugh St Andrews Fife KY16 9SS UK University of Chinese Academy of Sciences Hokoon Nature Education cum Astronomical Centre Sik Sik Yuen Hong Kong Astronomical Society 

出 版 物：《Research in Astronomy and Astrophysics》 (天文和天体物理学研究（英文版）)

年 卷 期：2013年第13卷第5期

页      面：593-603页

核心收录：

学科分类：07[理学] 08[工学] 081402[工学-结构工程] 070401[理学-天体物理] 081304[工学-建筑技术科学] 0813[工学-建筑学] 0704[理学-天文学] 0814[工学-土木工程] 

基　　金：supported by the National Natural Science Foundation of China(Grant No.10873031) the Chinese Academy of Sciences(KJCX2-YW-T24) 

主　　题：exoplanet system    transit    individual: HAT P 24 

摘      要：The transiting exoplanet system HAT-P-24 was observed by using CCD cameras at Yunnan Observatory and Hokoon Astronomical Centre, China in 2010 and 2012. In order to enhance the signal to noise ratio of transit events, the observed data are corrected for systematic errors according to Collier Cameron et al.＇s coarse de- correlation and Tamuz et al.＇s SYSREM algorithms. Three new complete transit light curves are analyzed by means of the Markov chain Monte Carlo technique, and the new physical parameters of the system are derived. They are consistent with the old ones from the discovered paper except for a new larger radius Rp = 1.364 Rj of HAT- P-24b, which confirms its inflated nature. By combining the five available epochs of mid-transit derived from complete transit light curves, the orbital period of HAT-P- 24b is refined to P = 3.3552479 d and no obvious transit timing variation signal can be found from these five transit events during 2010-2012.