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
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/21038
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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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1844613835373150208 |
score |
13.070432 |