Sculpting the outer Edgeworth-Kuiper belt: stellar encounter followed by planetary perturbations

Autores
Melita, Mario Daniel; Larwood, J. D; Williams, I. P.
Año de publicación
2005
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We consider a close stellar fly-by as an explanation for the abrupt termination of the classical Edgeworth-Kuiper belt at around 50 AU from the Sun, and also for the high values of orbital excitation observed. By the use of numerical simulations we study a scenario in which a close stellar fly-by truncates the trans-neptunian cometary population as a result of strong gravitational perturbations. The results from some representative cases are compared with the presently observed distribution of EKBOs. Our findings suggest that—when observational biases are taken into account—this scenario can reproduce some features of the observed distribution. However, although it is clear that fly-by models are able to generate high values of eccentricity and orbital inclination in the outer particle distribution, this comes at the expense of preserving any low eccentricity particle orbits. The nearly vertical distribution of eccentricities over semimajor axis found at around 48 AU in the EKB cannot be modeled by the use of a stellar fly-by encounter alone. Hence we consider long timescale planetary perturbations and collisional self-interactions that act on the perturbed distribution after a fly-by encounter, and which have the potential to provide a more complete description of the EKBO distribution. However, even when these have been taken into account, the transport of objects from `hot´ to `cold´ orbits may not be sufficient to cover the range of semimajor axes that are observed in the later. Thus, an alternative origin for the low inclination and eccentricity orbits seems likely. The effect of such an encounter on the inner Oort cloud is studied, and we conclude that comets in very large and elongated orbits can be transported to the trans-neptunian region by this mechanism.
Fil: Melita, Mario Daniel. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina. University Of London; Reino Unido
Fil: Larwood, J. D. University Of London; Reino Unido
Fil: Williams, I. P.. University Of London; Reino Unido
Materia
Asteroids
Comets
Kuiper Belt
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/21038

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spelling Sculpting the outer Edgeworth-Kuiper belt: stellar encounter followed by planetary perturbationsMelita, Mario DanielLarwood, J. DWilliams, I. P.AsteroidsCometsKuiper Belthttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We consider a close stellar fly-by as an explanation for the abrupt termination of the classical Edgeworth-Kuiper belt at around 50 AU from the Sun, and also for the high values of orbital excitation observed. By the use of numerical simulations we study a scenario in which a close stellar fly-by truncates the trans-neptunian cometary population as a result of strong gravitational perturbations. The results from some representative cases are compared with the presently observed distribution of EKBOs. Our findings suggest that—when observational biases are taken into account—this scenario can reproduce some features of the observed distribution. However, although it is clear that fly-by models are able to generate high values of eccentricity and orbital inclination in the outer particle distribution, this comes at the expense of preserving any low eccentricity particle orbits. The nearly vertical distribution of eccentricities over semimajor axis found at around 48 AU in the EKB cannot be modeled by the use of a stellar fly-by encounter alone. Hence we consider long timescale planetary perturbations and collisional self-interactions that act on the perturbed distribution after a fly-by encounter, and which have the potential to provide a more complete description of the EKBO distribution. However, even when these have been taken into account, the transport of objects from `hot´ to `cold´ orbits may not be sufficient to cover the range of semimajor axes that are observed in the later. Thus, an alternative origin for the low inclination and eccentricity orbits seems likely. The effect of such an encounter on the inner Oort cloud is studied, and we conclude that comets in very large and elongated orbits can be transported to the trans-neptunian region by this mechanism.Fil: Melita, Mario Daniel. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina. University Of London; Reino UnidoFil: Larwood, J. D. University Of London; Reino UnidoFil: Williams, I. P.. University Of London; Reino UnidoAcademic Press Inc Elsevier Science2005-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/21038Melita, Mario Daniel; Larwood, J. D; Williams, I. P.; Sculpting the outer Edgeworth-Kuiper belt: stellar encounter followed by planetary perturbations; Academic Press Inc Elsevier Science; Icarus; 173; 2; 12-2005; 559-5730019-1035CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.icarus.2004.08.020info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0019103504002799info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:02:46Zoai:ri.conicet.gov.ar:11336/21038instacron: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 10:02:47.094CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Sculpting the outer Edgeworth-Kuiper belt: stellar encounter followed by planetary perturbations
title Sculpting the outer Edgeworth-Kuiper belt: stellar encounter followed by planetary perturbations
spellingShingle Sculpting the outer Edgeworth-Kuiper belt: stellar encounter followed by planetary perturbations
Melita, Mario Daniel
Asteroids
Comets
Kuiper Belt
title_short Sculpting the outer Edgeworth-Kuiper belt: stellar encounter followed by planetary perturbations
title_full Sculpting the outer Edgeworth-Kuiper belt: stellar encounter followed by planetary perturbations
title_fullStr Sculpting the outer Edgeworth-Kuiper belt: stellar encounter followed by planetary perturbations
title_full_unstemmed Sculpting the outer Edgeworth-Kuiper belt: stellar encounter followed by planetary perturbations
title_sort Sculpting the outer Edgeworth-Kuiper belt: stellar encounter followed by planetary perturbations
dc.creator.none.fl_str_mv Melita, Mario Daniel
Larwood, J. D
Williams, I. P.
author Melita, Mario Daniel
author_facet Melita, Mario Daniel
Larwood, J. D
Williams, I. P.
author_role author
author2 Larwood, J. D
Williams, I. P.
author2_role author
author
dc.subject.none.fl_str_mv Asteroids
Comets
Kuiper Belt
topic Asteroids
Comets
Kuiper Belt
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv We consider a close stellar fly-by as an explanation for the abrupt termination of the classical Edgeworth-Kuiper belt at around 50 AU from the Sun, and also for the high values of orbital excitation observed. By the use of numerical simulations we study a scenario in which a close stellar fly-by truncates the trans-neptunian cometary population as a result of strong gravitational perturbations. The results from some representative cases are compared with the presently observed distribution of EKBOs. Our findings suggest that—when observational biases are taken into account—this scenario can reproduce some features of the observed distribution. However, although it is clear that fly-by models are able to generate high values of eccentricity and orbital inclination in the outer particle distribution, this comes at the expense of preserving any low eccentricity particle orbits. The nearly vertical distribution of eccentricities over semimajor axis found at around 48 AU in the EKB cannot be modeled by the use of a stellar fly-by encounter alone. Hence we consider long timescale planetary perturbations and collisional self-interactions that act on the perturbed distribution after a fly-by encounter, and which have the potential to provide a more complete description of the EKBO distribution. However, even when these have been taken into account, the transport of objects from `hot´ to `cold´ orbits may not be sufficient to cover the range of semimajor axes that are observed in the later. Thus, an alternative origin for the low inclination and eccentricity orbits seems likely. The effect of such an encounter on the inner Oort cloud is studied, and we conclude that comets in very large and elongated orbits can be transported to the trans-neptunian region by this mechanism.
Fil: Melita, Mario Daniel. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina. University Of London; Reino Unido
Fil: Larwood, J. D. University Of London; Reino Unido
Fil: Williams, I. P.. University Of London; Reino Unido
description We consider a close stellar fly-by as an explanation for the abrupt termination of the classical Edgeworth-Kuiper belt at around 50 AU from the Sun, and also for the high values of orbital excitation observed. By the use of numerical simulations we study a scenario in which a close stellar fly-by truncates the trans-neptunian cometary population as a result of strong gravitational perturbations. The results from some representative cases are compared with the presently observed distribution of EKBOs. Our findings suggest that—when observational biases are taken into account—this scenario can reproduce some features of the observed distribution. However, although it is clear that fly-by models are able to generate high values of eccentricity and orbital inclination in the outer particle distribution, this comes at the expense of preserving any low eccentricity particle orbits. The nearly vertical distribution of eccentricities over semimajor axis found at around 48 AU in the EKB cannot be modeled by the use of a stellar fly-by encounter alone. Hence we consider long timescale planetary perturbations and collisional self-interactions that act on the perturbed distribution after a fly-by encounter, and which have the potential to provide a more complete description of the EKBO distribution. However, even when these have been taken into account, the transport of objects from `hot´ to `cold´ orbits may not be sufficient to cover the range of semimajor axes that are observed in the later. Thus, an alternative origin for the low inclination and eccentricity orbits seems likely. The effect of such an encounter on the inner Oort cloud is studied, and we conclude that comets in very large and elongated orbits can be transported to the trans-neptunian region by this mechanism.
publishDate 2005
dc.date.none.fl_str_mv 2005-12
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/11336/21038
Melita, Mario Daniel; Larwood, J. D; Williams, I. P.; Sculpting the outer Edgeworth-Kuiper belt: stellar encounter followed by planetary perturbations; Academic Press Inc Elsevier Science; Icarus; 173; 2; 12-2005; 559-573
0019-1035
CONICET Digital
CONICET
url http://hdl.handle.net/11336/21038
identifier_str_mv Melita, Mario Daniel; Larwood, J. D; Williams, I. P.; Sculpting the outer Edgeworth-Kuiper belt: stellar encounter followed by planetary perturbations; Academic Press Inc Elsevier Science; Icarus; 173; 2; 12-2005; 559-573
0019-1035
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.icarus.2004.08.020
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0019103504002799
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Academic Press Inc Elsevier Science
publisher.none.fl_str_mv Academic Press Inc Elsevier Science
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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