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Detecting and Monitoring Tidal Dissipation of Hot Jupiters in the Era of SiTian

Research in Astronomy and Astrophysics 2022年第5期22卷 36-46页

作者： Fan Yang Wei Wang Xing Wei Hui Zhang Ji-Lin Zhou Su-Su Shan Jie Zheng Wei-Kai Zong Ming Yang Yu Bai Song Wang Jia-Chen Zheng Yu-Ru Xu Yu-Feng Li You-Jun Lu Ji-Feng Liu Department of Astronomy Beijing Normal UniversityBeijing 100875China Key Laboratory of Optical Astronomy National Astronomical ObservatoriesChinese Academy of SciencesBeijing 100101China School of Astronomy and Space Science University of Chinese Academy of SciencesBeijing 100049China School of Astronomy and Space Science Nanjing UniversityNanjing 210023China

Transit Timing Variation(TTV)of hot Jupiters provides direct observational evidence of planet tidal *** tidal dissipation through TTV needs high precision transit timings and long timing *** this work,we predict and discuss the potential scientific contribution of the SiTian Survey in detecting and analyzing exoplanet *** develop a tidal dissipation detection pipeline for the SiTian Survey that aims at time-domain astronomy with 721 m optical *** pipeline includes the modules of light curve deblending,transit timing acquisition and TTV *** is capable of detecting more than 25,000 exoplanets among which we expect~50 sources to show evidence of tidal *** present detection and analysis of tidal dissipating targets,based on simulated SiTian light curves of XO-3b and WASP-161 *** transit light curve modeling gives consistent results within 1σto input values of simulated light ***,the parameter uncertainties predicted by Markov Chain Monte Carlo are consistent with the distribution obtained from simulating and modeling the light curve 1000 *** timing precision of SiTian observations is~0.5 minutes with one transit *** show that differences between TTV origins,e.g.,tidal dissipation,apsidal precession and multiple planets,would be significant,considering the timing precision and *** detection rate of tidal dissipating hot Jupiters would answer a crucial question of whether the planet migrates at an early formation stage or random stages due to perturbations,e.g.,planet scattering or secular *** identified targets would be constructive given that the sample would extend tenfold.

关键词： planets and satellites gaseous planets-planets and satellites physical evolution-planets and satellites dynamical evolutionand stability-planetsandsatellites detection

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