Resonance capture and dynamics of three-planet systems
We present a series of dynamical maps for fictitious three-planet systems in initially circular coplanar orbits. These maps have unveiled a rich resonant structure involving two or three planets, as well as indicating possible migration routes from secular to double resonances or pure three-planet c...
| Autores principales: | , , , |
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| Formato: | Articulo |
| Lenguaje: | Inglés |
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2018
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| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/100349 https://ri.conicet.gov.ar/11336/89370 |
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I19-R120-10915-100349 |
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dspace |
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Universidad Nacional de La Plata |
| institution_str |
I-19 |
| repository_str |
R-120 |
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SEDICI (UNLP) |
| language |
Inglés |
| topic |
Astronomía Celestial mechanics Methods: numerical Planets and satellites: dynamical evolution and stability |
| spellingShingle |
Astronomía Celestial mechanics Methods: numerical Planets and satellites: dynamical evolution and stability Charalambous, Carolina Martí, Javier Guillermo Beaugé, Cristián Ramos, Ximena Soledad Resonance capture and dynamics of three-planet systems |
| topic_facet |
Astronomía Celestial mechanics Methods: numerical Planets and satellites: dynamical evolution and stability |
| description |
We present a series of dynamical maps for fictitious three-planet systems in initially circular coplanar orbits. These maps have unveiled a rich resonant structure involving two or three planets, as well as indicating possible migration routes from secular to double resonances or pure three-planet commensurabilities. These structures are then compared to the present-day orbital architecture of observed resonant chains. In a second part of the paper, we describe N-body simulations of type-I migration. Depending on the orbital decay time-scale, we show that three-planet systems may be trapped in different combinations of independent commensurabilities: (i) double resonances, (ii) intersection between a two-planet and a first-order three-planet resonances, and (iii) simultaneous libration in two first-order three-planet resonances. These latter outcomes are found for slow migrations, while double resonances are almost always the final outcome in high-density discs. Finally, we discuss an application to the TRAPPIST-1 system. We find that, for low migration rates and planetary masses of the order of the estimated values, most three-planet sub-systems are able to reach the observed double resonances after following evolutionary routes defined by pure three-planet resonances. The final orbital configuration shows resonance offsets comparable with present-day values without the need of tidal dissipation. For the 8/5 resonance proposed to dominate the dynamics of the two inner planets, we find little evidence of its dynamical significance; instead, we propose that this relation between mean motions could be a consequence of the interaction between a pure three-planet resonance and a two-planet commensurability between planets c and d. |
| format |
Articulo Articulo |
| author |
Charalambous, Carolina Martí, Javier Guillermo Beaugé, Cristián Ramos, Ximena Soledad |
| author_facet |
Charalambous, Carolina Martí, Javier Guillermo Beaugé, Cristián Ramos, Ximena Soledad |
| author_sort |
Charalambous, Carolina |
| title |
Resonance capture and dynamics of three-planet systems |
| title_short |
Resonance capture and dynamics of three-planet systems |
| title_full |
Resonance capture and dynamics of three-planet systems |
| title_fullStr |
Resonance capture and dynamics of three-planet systems |
| title_full_unstemmed |
Resonance capture and dynamics of three-planet systems |
| title_sort |
resonance capture and dynamics of three-planet systems |
| publishDate |
2018 |
| url |
http://sedici.unlp.edu.ar/handle/10915/100349 https://ri.conicet.gov.ar/11336/89370 |
| work_keys_str_mv |
AT charalambouscarolina resonancecaptureanddynamicsofthreeplanetsystems AT martijavierguillermo resonancecaptureanddynamicsofthreeplanetsystems AT beaugecristian resonancecaptureanddynamicsofthreeplanetsystems AT ramosximenasoledad resonancecaptureanddynamicsofthreeplanetsystems |
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Repositorios |
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1764820440279154689 |