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名稱Title
2021天文年會
國立嘉義大學蘭潭校區
5月21日至23日

論文摘要

Dynamical Stability of Planets in a Close Binary System

[ Oral ]

Shiang-Chih Wang(NTHU); Ing-Guey Jiang(NTHU)

A great number of extrasolar planets(exoplanets) have been detected in recent years. Most of the exoplanets are confirmed by the analysis of their transit light curve. However, an exoplanet with S-type orbit in a close binary system can only be confirmed with their radial velocity data, with lots of uncertainty. In this study, we perform two numerical simulations, focusing on the evolution of the planet with S-type orbit in a close binary system HD 59686 with different number of planets. The dynamical map shows that if there is only one planet in the system, the planet can be more stable with a coplanar retrograde orbit, in consistence with trifonov et al. (2018). The map also shows that If there exist another relatively small planet in the system, the planet can survive within the simulation time with the initial semi-major axis ranging from 0.1 to 0.8 AU, and tend to has huge chaotic with the initial semi-major axis ranging from 0.4 to 0.5 AU. The planet can also survive with different initial inclination angles. These results can be valuable hints for future observational project.