Influence of the Centaurs and TNOs on the main belt and its families

dc.contributor.authorGaliazzo, Mattia A.
dc.contributor.authorWiegert, Paul
dc.contributor.authorAljbaae, Safwan [UNESP]
dc.contributor.institutionThe University of Western Ontario
dc.contributor.institutionUniversity of Vienna
dc.contributor.institutionCentre for Planetary Science and Exploration (CPSX)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2018-12-11T16:44:35Z
dc.date.available2018-12-11T16:44:35Z
dc.date.issued2016-12-01
dc.description.abstractCentaurs are objects whose orbits are found between those of the giant planets. They are supposed to originate mainly from the Trans-Neptunian objects, and they are among the sources of Near-Earth Objects. Trans-Neptunian Objects (TNOs) cross Neptune’s orbit and produce the Centaurs. We investigate their interactions with main belt asteroids to determine if chaotic scattering caused by close encounters and impacts by these bodies may have played a role in the dynamical evolution of the main belt. We find that Centaurs and TNOs that reach the inner Solar System can modify the orbits of main belt asteroids, though only if their mass is of the order of 10 − 9m⊙ for single encounters or, one order less in case of multiple close encounters. Centaurs and TNOs are unlikely to have significantly dispersed young asteroid families in the main belt, but they could have perturbed some old asteroid families. Current main belt asteroids that originated as Centaurs or Trans-Neptunian Objects may lie in the outer belt with short lifetime ≤4My, most likely between 2.8 and 3.2 au at larger eccentricities than typical of main belt asteroids.en
dc.description.affiliationDepartment of Physics and Astronomy The University of Western Ontario
dc.description.affiliationInstitute of Astrophysics University of Vienna, Turkenschanzstr. 17
dc.description.affiliationCentre for Planetary Science and Exploration (CPSX)
dc.description.affiliationUNESP Grupo de dinâmica Orbital e Planetologia Univ. Estadual Paulista
dc.description.affiliationUnespUNESP Grupo de dinâmica Orbital e Planetologia Univ. Estadual Paulista
dc.description.sponsorshipAustrian Science Fund
dc.description.sponsorshipIdAustrian Science Fund: P23810-N16
dc.identifierhttp://dx.doi.org/10.1007/s10509-016-2957-z
dc.identifier.citationAstrophysics and Space Science, v. 361, n. 12, 2016.
dc.identifier.doi10.1007/s10509-016-2957-z
dc.identifier.file2-s2.0-84994735181.pdf
dc.identifier.issn1572-946X
dc.identifier.issn0004-640X
dc.identifier.scopus2-s2.0-84994735181
dc.identifier.urihttp://hdl.handle.net/11449/169128
dc.language.isoeng
dc.relation.ispartofAstrophysics and Space Science
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectAsteroids: general – celestial mechanics
dc.subjectMinor planets
dc.titleInfluence of the Centaurs and TNOs on the main belt and its familiesen
dc.typeArtigo

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