The dynamics of co-orbital giant exomoons - applications for the Kepler-1625 b and Kepler-1708 b satellite systems

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dc.contributor.authorMoraes, R. A. [UNESP]
dc.contributor.authorBorderes-Motta, G.
dc.contributor.authorWinter, O. C. [UNESP]
dc.contributor.authorMourão, D. C. [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.contributor.institutionBioengineering and Aerospace Engineering Department
dc.contributor.institutionSwedish Institute of Space Physics
dc.date.accessioned2023-07-29T16:14:48Z
dc.date.available2023-07-29T16:14:48Z
dc.date.issued2023-04-01
dc.description.abstractExomoons are a missing piece of exoplanetary science. Recently, two promising candidates were proposed, Kepler-1625 b-I and Kepler-1708 b-I. While the latter still lacks a dynamical analysis of its stability, Kepler-1625 b-I has already been the subject of several studies regarding its stability and origin. Moreover, previous works have shown that this satellite system could harbour at least two stable massive moons. Motivated by these results, we explored the stability of co-orbital exomoons using the candidates Kepler-1625 b-I and Kepler-1708 b-I as case studies. To do so, we performed numerical simulations of systems composed of the star, planet, and the co-orbital pair formed by the proposed candidates and another massive body. For the additional satellite, we varied its mass and size from a Mars-like to the case where both satellites have the same physical characteristics. We investigated the co-orbital region around the Lagrangian equilibrium point L4 of the system, setting the orbital separation between the satellites from θmin = 30◦ to θmax = 90◦. Our results show that stability islands are possible in the co-orbital region of Kepler-1708 b-I as a function of the co-orbital companion's mass and angular separation. Also, we identified that resonances of librational frequencies, especially the 2:1 resonance, can constrain the mass of the co-orbital companion. On the other hand, we found that the proximity between the host planet and the star makes the co-orbital region around Kepler-1625 b-I unstable for a massive companion. Finally, we provide TTV profiles for a planet orbited by co-orbital exomoons.en
dc.description.affiliationUNESP São Paulo State University Grupo de Dinâmica Orbital & Planetologia, Guaratinguetá
dc.description.affiliationUC3M Univ. Carlos III de Madrid Bioengineering and Aerospace Engineering Department, Leganés
dc.description.affiliationIRF Swedish Institute of Space Physics, Kiruna
dc.description.affiliationUnespUNESP São Paulo State University Grupo de Dinâmica Orbital & Planetologia, Guaratinguetá
dc.description.sponsorshipAdvanced Scientific Computing Research
dc.description.sponsorshipUniversidade Estadual Paulista
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description.sponsorshipIdFAPESP: 2016/24561-0
dc.description.sponsorshipIdCNPq: 305210/2018-1
dc.description.sponsorshipIdCAPES: 88887.310463/2018-00
dc.format.extent2163-2177
dc.identifierhttp://dx.doi.org/10.1093/mnras/stad314
dc.identifier.citationMonthly Notices of the Royal Astronomical Society, v. 520, n. 2, p. 2163-2177, 2023.
dc.identifier.doi10.1093/mnras/stad314
dc.identifier.issn1365-2966
dc.identifier.issn0035-8711
dc.identifier.scopus2-s2.0-85160321611
dc.identifier.urihttp://hdl.handle.net/11449/249991
dc.language.isoeng
dc.relation.ispartofMonthly Notices of the Royal Astronomical Society
dc.sourceScopus
dc.subjectplanets
dc.subjectplanets and satellites: dynamical evolution and stability
dc.subjectsatellites: individual (Kepler-1625 b-I, Kepler-1708 b-I)
dc.titleThe dynamics of co-orbital giant exomoons - applications for the Kepler-1625 b and Kepler-1708 b satellite systemsen
dc.typeArtigo
unesp.author.orcid0000-0002-4013-8878[1]
unesp.author.orcid0000-0002-4680-8414[2]
unesp.departmentMatemática - FEGpt

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Guaratinguetá - FEG - Faculdade de Engenharia e Ciências