تقرير
Planet-Planet Scattering and ZLK Migration -- The Dynamical History of HAT-P-11
| العنوان: | Planet-Planet Scattering and ZLK Migration -- The Dynamical History of HAT-P-11 |
|---|---|
| المؤلفون: | Lu, Tiger, An, Qier, Li, Gongjie, Millholland, Sarah C., Brandt, G. Mirek, Brandt, Timothy D. |
| سنة النشر: | 2024 |
| المجموعة: | Astrophysics |
| مصطلحات موضوعية: | Astrophysics - Earth and Planetary Astrophysics |
| الوصف: | The two planets of the HAT-P-11 system represent fascinating dynamical puzzles due to their significant eccentricities and orbital misalignments. In particular, HAT-P-11 b is on a close-in orbit that tides should have circularized well within the age of the system. Here we propose a two-step dynamical process that can reproduce all intriguing aspects of the system. We first invoke planet-planet scattering to generate significant eccentricities and mutual inclinations between the planets. We then propose that this misalignment initiated von-Zeipel-Lidov-Kozai cycles and high-eccentricity migration that ultimately brought HAT-P-11 b to its present-day orbit. We find that this scenario is fully consistent only when significant tidally-driven radius inflation is accounted for during the tidal migration. We present a suite of N-body simulations exploring each phase of evolution and show that this scenario is consistent with all observational posteriors and the reported age of the system. Comment: 17 pages, 8 figures, submitted to ApJ |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/2405.19511 |
| رقم الأكسشن: | edsarx.2405.19511 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |