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dc.contributor.author
Gianuzzi, Emmanuel
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dc.contributor.author
Giuppone, Cristian Andrés
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dc.contributor.author
Cuello, Nicolás
dc.date.available
2024-02-07T15:27:00Z
dc.date.issued
2023-01
dc.identifier.citation
Gianuzzi, Emmanuel; Giuppone, Cristian Andrés; Cuello, Nicolás; Circumbinary planets: migration, trapping in mean-motion resonances, and ejection; EDP Sciences; Astronomy and Astrophysics; 669; 1-2023; 1-13
dc.identifier.issn
0004-6361
dc.identifier.uri
http://hdl.handle.net/11336/226171
dc.description.abstract
Most of the planetary systems discovered around binary stars are located at approximately three semi-major axes from the barycentre of their system, curiously close to low-order mean-motion resonances (MMRs). The formation mechanism of these circumbinary planets is not yet fully understood. In situ formation is extremely challenging because of the strong interaction with the binary. One possible explanation is that, after their formation, the interactions between these planets and the surrounding protoplanetary disc cause them to migrate at velocities dependent on the nature of the disc and the mass of the exoplanet. Although extensive data can be obtained with direct hydrodynamical simulations, their computational cost remains too high. On the other hand, the direct N-body simulations approach allows us to model a large variety of parameters at much lower cost. Aims. We analyse the planetary migration around a wide variety of binary stars using Stokes-like forces that mimic planetary migration at a constant rate. Our goal is to identify the main parameters responsible for the ejection of planets at different resonances with the inner binary. Methods. We performed 4200 N-body simulations with Stokes-like forces and analysed their evolution and outcome as a function of the properties of each system. For each simulated exoplanet, we applied an ensemble learning method for classification in order to clarify the relationship between the inspected parameters and the process of MMR capture. Results. We identify the capture probability for different N/1 MMRs, 4/1 being the most prone to capture exoplanets, with 37% probability, followed by MMR 5/1 with ~23% of probability. The eccentricity of the binary is found to be the most important parameter in determining the MMR capture of each circumbinary exoplanet, followed by the mass ratio of the binary and the initial eccentricity of the planet.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
EDP Sciences
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
BINARIES: ECLIPSING
dc.subject
METHODS: NUMERICAL
dc.subject
METHODS: STATISTICAL
dc.subject
PLANET-STAR INTERACTIONS
dc.subject
PLANETS AND SATELLITES: DYNAMICAL EVOLUTION AND STABILITY
dc.subject.classification
Astronomía
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dc.subject.classification
Ciencias Físicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Circumbinary planets: migration, trapping in mean-motion resonances, and ejection
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2024-02-06T13:44:50Z
dc.journal.volume
669
dc.journal.pagination
1-13
dc.journal.pais
Francia
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dc.description.fil
Fil: Gianuzzi, Emmanuel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; Argentina
dc.description.fil
Fil: Giuppone, Cristian Andrés. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; Argentina
dc.description.fil
Fil: Cuello, Nicolás. Universite Grenoble Alpes; Francia
dc.journal.title
Astronomy and Astrophysics
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1051/0004-6361/202244902
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