DYNAMICAL ANALYSIS AND EVOLUTION OF THE HD 202206 SYSTEM
The study of extrasolar planetary systems has significantly expanded our understanding of planetary system formation and continues to provide new insights as more exoplanets are discovered. Circumbinary objects orbiting binaries have been found in both extrasolar planetary systems and the solar system in recent years. A rare high-order 5:1 resonant system, HD 202206, is the only potential system of a circumbinary object around a binary star discovered by the radial velocity (RV) method. Previous research suggesting that this system is a nearly face-on system is still controversial (Benedict & Harrison, 2017). In this work, we focus on the orbital structure and dynamical evolution of this system. Two primary unsolved problems in this system are the accurate mass of the inner companion and the inclination of the system. In this talk, I will discuss the preliminary results that I have obtained so far, using more precise RV data from the HARPS (High Accuracy Radial Velocity Planet Searcher) spectrograph.
Additional information: Miss Yingyi CAO, astrocyy@connect.hku.hk