Influence of the Centaurs and TNOs on the main belt and its families
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1007/s10509-016-2957-z http://hdl.handle.net/11449/169128 |
Resumo: | Centaurs 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. |
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Repositório Institucional da UNESP |
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Influence of the Centaurs and TNOs on the main belt and its familiesAsteroids: general – celestial mechanicsMinor planetsCentaurs 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.Austrian Science FundDepartment of Physics and Astronomy The University of Western OntarioInstitute of Astrophysics University of Vienna, Turkenschanzstr. 17Centre for Planetary Science and Exploration (CPSX)UNESP Grupo de dinâmica Orbital e Planetologia Univ. Estadual PaulistaUNESP Grupo de dinâmica Orbital e Planetologia Univ. Estadual PaulistaAustrian Science Fund: P23810-N16The University of Western OntarioUniversity of ViennaCentre for Planetary Science and Exploration (CPSX)Universidade Estadual Paulista (Unesp)Galiazzo, Mattia A.Wiegert, PaulAljbaae, Safwan [UNESP]2018-12-11T16:44:35Z2018-12-11T16:44:35Z2016-12-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://dx.doi.org/10.1007/s10509-016-2957-zAstrophysics and Space Science, v. 361, n. 12, 2016.1572-946X0004-640Xhttp://hdl.handle.net/11449/16912810.1007/s10509-016-2957-z2-s2.0-849947351812-s2.0-84994735181.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengAstrophysics and Space Scienceinfo:eu-repo/semantics/openAccess2023-10-01T06:02:46Zoai:repositorio.unesp.br:11449/169128Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T13:39:23.576013Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Influence of the Centaurs and TNOs on the main belt and its families |
title |
Influence of the Centaurs and TNOs on the main belt and its families |
spellingShingle |
Influence of the Centaurs and TNOs on the main belt and its families Galiazzo, Mattia A. Asteroids: general – celestial mechanics Minor planets |
title_short |
Influence of the Centaurs and TNOs on the main belt and its families |
title_full |
Influence of the Centaurs and TNOs on the main belt and its families |
title_fullStr |
Influence of the Centaurs and TNOs on the main belt and its families |
title_full_unstemmed |
Influence of the Centaurs and TNOs on the main belt and its families |
title_sort |
Influence of the Centaurs and TNOs on the main belt and its families |
author |
Galiazzo, Mattia A. |
author_facet |
Galiazzo, Mattia A. Wiegert, Paul Aljbaae, Safwan [UNESP] |
author_role |
author |
author2 |
Wiegert, Paul Aljbaae, Safwan [UNESP] |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
The University of Western Ontario University of Vienna Centre for Planetary Science and Exploration (CPSX) Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Galiazzo, Mattia A. Wiegert, Paul Aljbaae, Safwan [UNESP] |
dc.subject.por.fl_str_mv |
Asteroids: general – celestial mechanics Minor planets |
topic |
Asteroids: general – celestial mechanics Minor planets |
description |
Centaurs 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. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-12-01 2018-12-11T16:44:35Z 2018-12-11T16:44:35Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1007/s10509-016-2957-z Astrophysics and Space Science, v. 361, n. 12, 2016. 1572-946X 0004-640X http://hdl.handle.net/11449/169128 10.1007/s10509-016-2957-z 2-s2.0-84994735181 2-s2.0-84994735181.pdf |
url |
http://dx.doi.org/10.1007/s10509-016-2957-z http://hdl.handle.net/11449/169128 |
identifier_str_mv |
Astrophysics and Space Science, v. 361, n. 12, 2016. 1572-946X 0004-640X 10.1007/s10509-016-2957-z 2-s2.0-84994735181 2-s2.0-84994735181.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Astrophysics and Space Science |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808128258857762816 |