Origin and sustainability of the population of asteroids captured in the exterior resonance 1:2 with Mars

Autores
Tabaré Gallardo, Carlos; Venturini, Julia; Roig, Fernando Virgilio; Gil Hutton, Ricardo Alfredo
Año de publicación
2011
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
At present, approximately 1500 asteroids are known to evolve inside or sticked to the exterior 1:2 resonance with Mars at a ≃ 2.418 AU, being (142) Polana the largest member of this group. The effect of the forced secular modes superposed to the resonance gives rise to a complex dynamical evolution. Chaotic diffusion, collisions, close encounters with massive asteroids and mainly orbital migration due to the Yarkovsky effect generate continuous captures to and losses from the resonance, with a fraction of asteroids remaining captured over long time scales and generating a concentration in the semimajor axis distribution that exceeds by 20% the population of background asteroids. The Yarkovsky effect induces different dynamics according to the asteroid size, producing an excess of small asteroids inside the resonance. The evolution in the resonance generates a signature on the orbits, mainly in eccentricity, that depends on the time the asteroid remains captured inside the resonance and on the magnitude of the Yarkovsky effect. The greater the asteroids, the larger the time they remain captured in the resonance, allowing greater diffusion in eccentricity and inclination. The resonance generates a discontinuity and mixing in the space of proper elements producing misidentification of dynamical family members, mainly for Vesta and Nysa-Polana families. The half-life of resonant asteroids large enough for not being affected by the Yarkovsky effect is about 1 Gyr. From the point of view of taxonomic classes, the resonant population does not differ from the background population and the excess of small asteroids is confirmed.
Fil: Tabaré Gallardo, Carlos. Universidad de la República; Uruguay
Fil: Venturini, Julia. Universidad de la República; Uruguay
Fil: Roig, Fernando Virgilio. Ministério de Ciencia, Tecnologia e Innovacao. Observatorio Nacional; Brasil
Fil: Gil Hutton, Ricardo Alfredo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Complejo Astronómico "el Leoncito". Universidad Nacional de Córdoba. Complejo Astronómico ; Argentina
Materia
Asteroids: Dynamics
Asteorid Vesta
Resonances, Orbital
Rotational dynamics
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/17943
Acceder
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repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Origin and sustainability of the population of asteroids captured in the exterior resonance 1:2 with MarsTabaré Gallardo, CarlosVenturini, JuliaRoig, Fernando VirgilioGil Hutton, Ricardo AlfredoAsteroids: DynamicsAsteorid VestaResonances, OrbitalRotational dynamicshttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1At present, approximately 1500 asteroids are known to evolve inside or sticked to the exterior 1:2 resonance with Mars at a ≃ 2.418 AU, being (142) Polana the largest member of this group. The effect of the forced secular modes superposed to the resonance gives rise to a complex dynamical evolution. Chaotic diffusion, collisions, close encounters with massive asteroids and mainly orbital migration due to the Yarkovsky effect generate continuous captures to and losses from the resonance, with a fraction of asteroids remaining captured over long time scales and generating a concentration in the semimajor axis distribution that exceeds by 20% the population of background asteroids. The Yarkovsky effect induces different dynamics according to the asteroid size, producing an excess of small asteroids inside the resonance. The evolution in the resonance generates a signature on the orbits, mainly in eccentricity, that depends on the time the asteroid remains captured inside the resonance and on the magnitude of the Yarkovsky effect. The greater the asteroids, the larger the time they remain captured in the resonance, allowing greater diffusion in eccentricity and inclination. The resonance generates a discontinuity and mixing in the space of proper elements producing misidentification of dynamical family members, mainly for Vesta and Nysa-Polana families. The half-life of resonant asteroids large enough for not being affected by the Yarkovsky effect is about 1 Gyr. From the point of view of taxonomic classes, the resonant population does not differ from the background population and the excess of small asteroids is confirmed.Fil: Tabaré Gallardo, Carlos. Universidad de la República; UruguayFil: Venturini, Julia. Universidad de la República; UruguayFil: Roig, Fernando Virgilio. Ministério de Ciencia, Tecnologia e Innovacao. Observatorio Nacional; BrasilFil: Gil Hutton, Ricardo Alfredo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Complejo Astronómico "el Leoncito". Universidad Nacional de Córdoba. Complejo Astronómico ; ArgentinaElsevier2011-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/17943Tabaré Gallardo, Carlos ; Venturini, Julia; Roig, Fernando Virgilio; Gil Hutton, Ricardo Alfredo; Origin and sustainability of the population of asteroids captured in the exterior resonance 1:2 with Mars; Elsevier; Icarus; 214; 2; 8-2011; 632-6440019-1035enginfo:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0019103511002028info:eu-repo/semantics/altIdentifier/doi/10.1016/j.icarus.2011.05.029info:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/1105.5108info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:47:40Zoai:ri.conicet.gov.ar:11336/17943instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:47:41.183CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Origin and sustainability of the population of asteroids captured in the exterior resonance 1:2 with Mars
title Origin and sustainability of the population of asteroids captured in the exterior resonance 1:2 with Mars
spellingShingle Origin and sustainability of the population of asteroids captured in the exterior resonance 1:2 with Mars
Tabaré Gallardo, Carlos
Asteroids: Dynamics
Asteorid Vesta
Resonances, Orbital
Rotational dynamics
title_short Origin and sustainability of the population of asteroids captured in the exterior resonance 1:2 with Mars
title_full Origin and sustainability of the population of asteroids captured in the exterior resonance 1:2 with Mars
title_fullStr Origin and sustainability of the population of asteroids captured in the exterior resonance 1:2 with Mars
title_full_unstemmed Origin and sustainability of the population of asteroids captured in the exterior resonance 1:2 with Mars
title_sort Origin and sustainability of the population of asteroids captured in the exterior resonance 1:2 with Mars
dc.creator.none.fl_str_mv Tabaré Gallardo, Carlos
Venturini, Julia
Roig, Fernando Virgilio
Gil Hutton, Ricardo Alfredo
author Tabaré Gallardo, Carlos
author_facet Tabaré Gallardo, Carlos
Venturini, Julia
Roig, Fernando Virgilio
Gil Hutton, Ricardo Alfredo
author_role author
author2 Venturini, Julia
Roig, Fernando Virgilio
Gil Hutton, Ricardo Alfredo
author2_role author
author
author
dc.subject.none.fl_str_mv Asteroids: Dynamics
Asteorid Vesta
Resonances, Orbital
Rotational dynamics
topic Asteroids: Dynamics
Asteorid Vesta
Resonances, Orbital
Rotational dynamics
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv At present, approximately 1500 asteroids are known to evolve inside or sticked to the exterior 1:2 resonance with Mars at a ≃ 2.418 AU, being (142) Polana the largest member of this group. The effect of the forced secular modes superposed to the resonance gives rise to a complex dynamical evolution. Chaotic diffusion, collisions, close encounters with massive asteroids and mainly orbital migration due to the Yarkovsky effect generate continuous captures to and losses from the resonance, with a fraction of asteroids remaining captured over long time scales and generating a concentration in the semimajor axis distribution that exceeds by 20% the population of background asteroids. The Yarkovsky effect induces different dynamics according to the asteroid size, producing an excess of small asteroids inside the resonance. The evolution in the resonance generates a signature on the orbits, mainly in eccentricity, that depends on the time the asteroid remains captured inside the resonance and on the magnitude of the Yarkovsky effect. The greater the asteroids, the larger the time they remain captured in the resonance, allowing greater diffusion in eccentricity and inclination. The resonance generates a discontinuity and mixing in the space of proper elements producing misidentification of dynamical family members, mainly for Vesta and Nysa-Polana families. The half-life of resonant asteroids large enough for not being affected by the Yarkovsky effect is about 1 Gyr. From the point of view of taxonomic classes, the resonant population does not differ from the background population and the excess of small asteroids is confirmed.
Fil: Tabaré Gallardo, Carlos. Universidad de la República; Uruguay
Fil: Venturini, Julia. Universidad de la República; Uruguay
Fil: Roig, Fernando Virgilio. Ministério de Ciencia, Tecnologia e Innovacao. Observatorio Nacional; Brasil
Fil: Gil Hutton, Ricardo Alfredo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Complejo Astronómico "el Leoncito". Universidad Nacional de Córdoba. Complejo Astronómico ; Argentina
description At present, approximately 1500 asteroids are known to evolve inside or sticked to the exterior 1:2 resonance with Mars at a ≃ 2.418 AU, being (142) Polana the largest member of this group. The effect of the forced secular modes superposed to the resonance gives rise to a complex dynamical evolution. Chaotic diffusion, collisions, close encounters with massive asteroids and mainly orbital migration due to the Yarkovsky effect generate continuous captures to and losses from the resonance, with a fraction of asteroids remaining captured over long time scales and generating a concentration in the semimajor axis distribution that exceeds by 20% the population of background asteroids. The Yarkovsky effect induces different dynamics according to the asteroid size, producing an excess of small asteroids inside the resonance. The evolution in the resonance generates a signature on the orbits, mainly in eccentricity, that depends on the time the asteroid remains captured inside the resonance and on the magnitude of the Yarkovsky effect. The greater the asteroids, the larger the time they remain captured in the resonance, allowing greater diffusion in eccentricity and inclination. The resonance generates a discontinuity and mixing in the space of proper elements producing misidentification of dynamical family members, mainly for Vesta and Nysa-Polana families. The half-life of resonant asteroids large enough for not being affected by the Yarkovsky effect is about 1 Gyr. From the point of view of taxonomic classes, the resonant population does not differ from the background population and the excess of small asteroids is confirmed.
publishDate 2011
dc.date.none.fl_str_mv 2011-08
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/17943
Tabaré Gallardo, Carlos ; Venturini, Julia; Roig, Fernando Virgilio; Gil Hutton, Ricardo Alfredo; Origin and sustainability of the population of asteroids captured in the exterior resonance 1:2 with Mars; Elsevier; Icarus; 214; 2; 8-2011; 632-644
0019-1035
url http://hdl.handle.net/11336/17943
identifier_str_mv Tabaré Gallardo, Carlos ; Venturini, Julia; Roig, Fernando Virgilio; Gil Hutton, Ricardo Alfredo; Origin and sustainability of the population of asteroids captured in the exterior resonance 1:2 with Mars; Elsevier; Icarus; 214; 2; 8-2011; 632-644
0019-1035
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0019103511002028
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.icarus.2011.05.029
info:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/1105.5108
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.070432

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