Formation of ultra-short-period planet K2-266b via obliquity-driven tidal migration
Ultra-short-period planets (USPs), with orbital periods of less than one day, have been the subject of intense research since their discovery over a decade ago. Their close proximity to their host stars challenge our understanding of planet formation, and offer a valuable opportunity to probe the ph...
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| Format: | Final Year Project (FYP) |
| Language: | English |
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Nanyang Technological University
2023
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| Online Access: | https://hdl.handle.net/10356/166563 |
| _version_ | 1811695830365634560 |
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| author | Deng, Feifan |
| author2 | Leek Meng Lee |
| author_facet | Leek Meng Lee Deng, Feifan |
| author_sort | Deng, Feifan |
| collection | NTU |
| description | Ultra-short-period planets (USPs), with orbital periods of less than one day, have been the subject of intense research since their discovery over a decade ago. Their close proximity to their host stars challenge our understanding of planet formation, and offer a valuable opportunity to probe the physical mechanisms that shape planetary systems. In this report, we aim to evaluate the likelihood of K2-266b forming via obliquity-driven tidal migration. N-body tidal simulations of the K2-266 system with all of its confirmed planets were conducted to investigate the spontaneous effects of obliquity tides on K2-266b. We attempted to force the planet into Cassini state 2 through fine-tuning of initial conditions without imposing migration of the planets. Despite incorporating the ideal conditions into the simulations, our results show that K2-266b may be unable to enter Cassini state 2 and tidal dissipation may be insufficient for K2-266b to initiate migration. The obliquity of K2-266b was successfully excited and maintained. However, it is not a product of tidal dissipation and is likely due to gravitational influence from K2-266c. Although the obliquity tides mechanism has no explicit constraint on the mass ratio of the planets, it may not be applicable for USPs such as K2-266b, which are larger than their companion planets. |
| first_indexed | 2024-10-01T07:29:42Z |
| format | Final Year Project (FYP) |
| id | ntu-10356/166563 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T07:29:42Z |
| publishDate | 2023 |
| publisher | Nanyang Technological University |
| record_format | dspace |
| spelling | ntu-10356/1665632023-05-08T15:39:07Z Formation of ultra-short-period planet K2-266b via obliquity-driven tidal migration Deng, Feifan Leek Meng Lee School of Physical and Mathematical Sciences MLLeek@ntu.edu.sg Science::Physics Ultra-short-period planets (USPs), with orbital periods of less than one day, have been the subject of intense research since their discovery over a decade ago. Their close proximity to their host stars challenge our understanding of planet formation, and offer a valuable opportunity to probe the physical mechanisms that shape planetary systems. In this report, we aim to evaluate the likelihood of K2-266b forming via obliquity-driven tidal migration. N-body tidal simulations of the K2-266 system with all of its confirmed planets were conducted to investigate the spontaneous effects of obliquity tides on K2-266b. We attempted to force the planet into Cassini state 2 through fine-tuning of initial conditions without imposing migration of the planets. Despite incorporating the ideal conditions into the simulations, our results show that K2-266b may be unable to enter Cassini state 2 and tidal dissipation may be insufficient for K2-266b to initiate migration. The obliquity of K2-266b was successfully excited and maintained. However, it is not a product of tidal dissipation and is likely due to gravitational influence from K2-266c. Although the obliquity tides mechanism has no explicit constraint on the mass ratio of the planets, it may not be applicable for USPs such as K2-266b, which are larger than their companion planets. Bachelor of Science in Physics 2023-05-05T04:56:27Z 2023-05-05T04:56:27Z 2023 Final Year Project (FYP) Deng, F. (2023). Formation of ultra-short-period planet K2-266b via obliquity-driven tidal migration. Final Year Project (FYP), Nanyang Technological University, Singapore. https://hdl.handle.net/10356/166563 https://hdl.handle.net/10356/166563 en application/pdf Nanyang Technological University |
| spellingShingle | Science::Physics Deng, Feifan Formation of ultra-short-period planet K2-266b via obliquity-driven tidal migration |
| title | Formation of ultra-short-period planet K2-266b via obliquity-driven tidal migration |
| title_full | Formation of ultra-short-period planet K2-266b via obliquity-driven tidal migration |
| title_fullStr | Formation of ultra-short-period planet K2-266b via obliquity-driven tidal migration |
| title_full_unstemmed | Formation of ultra-short-period planet K2-266b via obliquity-driven tidal migration |
| title_short | Formation of ultra-short-period planet K2-266b via obliquity-driven tidal migration |
| title_sort | formation of ultra short period planet k2 266b via obliquity driven tidal migration |
| topic | Science::Physics |
| url | https://hdl.handle.net/10356/166563 |
| work_keys_str_mv | AT dengfeifan formationofultrashortperiodplanetk2266bviaobliquitydriventidalmigration |