Planet-Planet Scattering and ZLK Migration -- The Dynamical History of HAT-P-11
Fuente:
arXiv
Guardado en:
| Autores principales: | , , , , , , |
|---|---|
| Formato: | Preprint |
| Publicado: |
2024
|
| Materias: | |
| Acceso en línea: | |
| Etiquetas: |
Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
|
| _version_ | 1866910727656177664 |
|---|---|
| author | Lu, Tiger An, Qier Li, Gongjie Millholland, Sarah C. Rice, Malena Brandt, G. Mirek Brandt, Timothy D. |
| author_facet | Lu, Tiger An, Qier Li, Gongjie Millholland, Sarah C. Rice, Malena Brandt, G. Mirek Brandt, Timothy D. |
| contents | 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. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2405_19511 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Planet-Planet Scattering and ZLK Migration -- The Dynamical History of HAT-P-11 Lu, Tiger An, Qier Li, Gongjie Millholland, Sarah C. Rice, Malena Brandt, G. Mirek Brandt, Timothy D. Earth and Planetary Astrophysics 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. |
| title | Planet-Planet Scattering and ZLK Migration -- The Dynamical History of HAT-P-11 |
| topic | Earth and Planetary Astrophysics |
| url | https://arxiv.org/abs/2405.19511 |