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Table of contents
1 Context and thesis outline
1.1 Introduction
1.2 Eccentric planets and debris disks
1.3 Planetary migration and stellar binary companion
1.4 Summary
2 Modelling planet-debris disks interactions
2.1 Keplerian motion
2.2 Planetary patterns in debris disks
2.3 Perturbed Keplerian motion : introduction
2.4 Secular perturbations
2.5 Resonant interactions
2.6 Close-encounters
2.7 Numerical methods : N-body symplectic codes
3 Picture of a mature Gyr-old system, Faramaz et al. (2014b)
3.1 The eccentric debris disk of 2 Reticuli
3.2 Modelling approach
3.2.1 Analytical model
3.2.2 N-body simulations
3.2.3 Synthetic images
3.3 New constraints on the 2 Reticuli system
3.3.1 Constraints on perturbers : N-body simulations
3.3.2 Constraints on the disk : Synthetic images
3.4 Conclusions and perspectives
3.4.1 Conclusion
3.4.2 Towards better knowledge of the 2 Reticuli system with ALMA
Article : Can eccentric debris disks be long-lived? –
A first numerical investigation and application to 2 Reticuli
4 On the dynamical history of the Fomalhaut system, Faramaz et al., in prep
4.1 The Fomalhaut system
4.2 Modelling approach
4.2.1 Expected routes to form Fom b-like orbits
4.2.2 N-body simulations
4.3 A resonant origin for Fom b
4.3.1 A first two-step scenario
4.3.2 On the mass and eccentricity of Fom c
4.4 Apsidal alignement and refinement of the scenario
4.4.1 An unexpected feature : apsidal alignment
4.4.2 Close-encounters with Fom c
4.4.3 Further secular evolution with Fom c
4.4.4 A three-step dynamical scenario
4.5 Conclusions and perspectives
Article : Insights on the dynamical history of the Fomalhaut system – Investigating the Fom c hypothesis
5 Planetesimal-driven migration in binary systems
5.1 Why planetesimal-driven migration?
5.1.1 Migration around a single star
5.1.2 Dedicated numerical tools
5.1.3 Influence of a stellar binary companion
5.2 PDM in single star systems: the theory
5.3 Influence of a binary companion: first results, Faramaz et al. (2014a)
5.4 Conclusion and Perspectives
6 Perspectives
6.1 Architecture of exoplanetary systems in close binaries
6.2 Exoplanetary systems in time
6.3 An answer to the origin of exozodiacal dust?
6.4 Conclusion
Appendix
A The 2 Reticuli system
A.1 Inclination of 2 Reticuli
A.2 Constraints on 2 Ret set by direct imaging
B Article : An independent determination of Fomalhaut b’s orbit and the dynamical effects on the outer dust belt, Beust et al. (2014)
Bibliographie
Remerciements
