On the relevance of chaos for halo stars in the solar neighbourhood

Autores
Maffione, Nicolas Pablo; Gomez, F. A.; Cincotta, Pablo Miguel; Giordano, Claudia Marcela; Cooper, A. P.; O'Shea, B. W.
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We show that diffusion due to chaotic mixing in the neighbourhood of the Sun may not be as relevant as previously suggested in erasing phase space signatures of past Galactic accretion events. For this purpose, we analyse solar neighbourhood-like volumes extracted from cosmological simulations that naturally account for chaotic orbital behaviour induced by the strongly triaxial and cuspy shape of the resulting dark matter haloes, among other factors. In the approximation of an analytical static triaxial model, our results show that a large fraction of stellar halo particles in such local volumes have chaos onset times (i.e. the time-scale at which stars commonly associated with chaotic orbits will exhibit their chaotic behaviour) significantly larger than a Hubble time. Furthermore, particles that do present a chaotic behaviour within a Hubble time do not exhibit significant diffusion in phase space.
Fil: Maffione, Nicolas Pablo. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Instituto de Astrofísica de La Plata; Argentina
Fil: Gomez, F. A.. Max-Planck-Institut fur Astrophysik; Alemania
Fil: Cincotta, Pablo Miguel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Instituto de Astrofísica de La Plata; Argentina. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina
Fil: Giordano, Claudia Marcela . Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Instituto de Astrofísica de la Plata; Argentina. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina
Fil: Cooper, A. P. . University Of Durham; Reino Unido
Fil: O'Shea, B. W.. Michigan State University; Estados Unidos
Materia
Chaos
Difffusion
Numerical methods
Evolution of the Galaxy
Galaxy
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:11336/13886
Acceder
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network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling On the relevance of chaos for halo stars in the solar neighbourhoodMaffione, Nicolas PabloGomez, F. A.Cincotta, Pablo MiguelGiordano, Claudia Marcela Cooper, A. P. O'Shea, B. W.ChaosDifffusionNumerical methodsEvolution of the GalaxyGalaxyhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We show that diffusion due to chaotic mixing in the neighbourhood of the Sun may not be as relevant as previously suggested in erasing phase space signatures of past Galactic accretion events. For this purpose, we analyse solar neighbourhood-like volumes extracted from cosmological simulations that naturally account for chaotic orbital behaviour induced by the strongly triaxial and cuspy shape of the resulting dark matter haloes, among other factors. In the approximation of an analytical static triaxial model, our results show that a large fraction of stellar halo particles in such local volumes have chaos onset times (i.e. the time-scale at which stars commonly associated with chaotic orbits will exhibit their chaotic behaviour) significantly larger than a Hubble time. Furthermore, particles that do present a chaotic behaviour within a Hubble time do not exhibit significant diffusion in phase space.Fil: Maffione, Nicolas Pablo. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Instituto de Astrofísica de La Plata; ArgentinaFil: Gomez, F. A.. Max-Planck-Institut fur Astrophysik; AlemaniaFil: Cincotta, Pablo Miguel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Instituto de Astrofísica de La Plata; Argentina. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; ArgentinaFil: Giordano, Claudia Marcela . Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Instituto de Astrofísica de la Plata; Argentina. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; ArgentinaFil: Cooper, A. P. . University Of Durham; Reino UnidoFil: O'Shea, B. W.. Michigan State University; Estados UnidosOxford University Press2015-09info: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/11336/13886Maffione, Nicolas Pablo; Gomez, F. A.; Cincotta, Pablo Miguel; Giordano, Claudia Marcela ; Cooper, A. P. ; et al.; On the relevance of chaos for halo stars in the solar neighbourhood; Oxford University Press; Monthly Notices Of The Royal Astronomical Society; 453; 3; 9-2015; 2830-28470035-8711enginfo:eu-repo/semantics/altIdentifier/arxiv/http://arxiv.org/abs/1508.00579info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/stv1778info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article-lookup/doi/10.1093/mnras/stv1778info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T12:06:52Zoai:ri.conicet.gov.ar:11336/13886instacron: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:34982025-10-22 12:06:52.436CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv On the relevance of chaos for halo stars in the solar neighbourhood
title On the relevance of chaos for halo stars in the solar neighbourhood
spellingShingle On the relevance of chaos for halo stars in the solar neighbourhood
Maffione, Nicolas Pablo
Chaos
Difffusion
Numerical methods
Evolution of the Galaxy
Galaxy
title_short On the relevance of chaos for halo stars in the solar neighbourhood
title_full On the relevance of chaos for halo stars in the solar neighbourhood
title_fullStr On the relevance of chaos for halo stars in the solar neighbourhood
title_full_unstemmed On the relevance of chaos for halo stars in the solar neighbourhood
title_sort On the relevance of chaos for halo stars in the solar neighbourhood
dc.creator.none.fl_str_mv Maffione, Nicolas Pablo
Gomez, F. A.
Cincotta, Pablo Miguel
Giordano, Claudia Marcela
Cooper, A. P.
O'Shea, B. W.
author Maffione, Nicolas Pablo
author_facet Maffione, Nicolas Pablo
Gomez, F. A.
Cincotta, Pablo Miguel
Giordano, Claudia Marcela
Cooper, A. P.
O'Shea, B. W.
author_role author
author2 Gomez, F. A.
Cincotta, Pablo Miguel
Giordano, Claudia Marcela
Cooper, A. P.
O'Shea, B. W.
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Chaos
Difffusion
Numerical methods
Evolution of the Galaxy
Galaxy
topic Chaos
Difffusion
Numerical methods
Evolution of the Galaxy
Galaxy
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 show that diffusion due to chaotic mixing in the neighbourhood of the Sun may not be as relevant as previously suggested in erasing phase space signatures of past Galactic accretion events. For this purpose, we analyse solar neighbourhood-like volumes extracted from cosmological simulations that naturally account for chaotic orbital behaviour induced by the strongly triaxial and cuspy shape of the resulting dark matter haloes, among other factors. In the approximation of an analytical static triaxial model, our results show that a large fraction of stellar halo particles in such local volumes have chaos onset times (i.e. the time-scale at which stars commonly associated with chaotic orbits will exhibit their chaotic behaviour) significantly larger than a Hubble time. Furthermore, particles that do present a chaotic behaviour within a Hubble time do not exhibit significant diffusion in phase space.
Fil: Maffione, Nicolas Pablo. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Instituto de Astrofísica de La Plata; Argentina
Fil: Gomez, F. A.. Max-Planck-Institut fur Astrophysik; Alemania
Fil: Cincotta, Pablo Miguel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Instituto de Astrofísica de La Plata; Argentina. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina
Fil: Giordano, Claudia Marcela . Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Instituto de Astrofísica de la Plata; Argentina. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina
Fil: Cooper, A. P. . University Of Durham; Reino Unido
Fil: O'Shea, B. W.. Michigan State University; Estados Unidos
description We show that diffusion due to chaotic mixing in the neighbourhood of the Sun may not be as relevant as previously suggested in erasing phase space signatures of past Galactic accretion events. For this purpose, we analyse solar neighbourhood-like volumes extracted from cosmological simulations that naturally account for chaotic orbital behaviour induced by the strongly triaxial and cuspy shape of the resulting dark matter haloes, among other factors. In the approximation of an analytical static triaxial model, our results show that a large fraction of stellar halo particles in such local volumes have chaos onset times (i.e. the time-scale at which stars commonly associated with chaotic orbits will exhibit their chaotic behaviour) significantly larger than a Hubble time. Furthermore, particles that do present a chaotic behaviour within a Hubble time do not exhibit significant diffusion in phase space.
publishDate 2015
dc.date.none.fl_str_mv 2015-09
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/11336/13886
Maffione, Nicolas Pablo; Gomez, F. A.; Cincotta, Pablo Miguel; Giordano, Claudia Marcela ; Cooper, A. P. ; et al.; On the relevance of chaos for halo stars in the solar neighbourhood; Oxford University Press; Monthly Notices Of The Royal Astronomical Society; 453; 3; 9-2015; 2830-2847
0035-8711
url http://hdl.handle.net/11336/13886
identifier_str_mv Maffione, Nicolas Pablo; Gomez, F. A.; Cincotta, Pablo Miguel; Giordano, Claudia Marcela ; Cooper, A. P. ; et al.; On the relevance of chaos for halo stars in the solar neighbourhood; Oxford University Press; Monthly Notices Of The Royal Astronomical Society; 453; 3; 9-2015; 2830-2847
0035-8711
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/arxiv/http://arxiv.org/abs/1508.00579
info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/stv1778
info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article-lookup/doi/10.1093/mnras/stv1778
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
application/pdf
dc.publisher.none.fl_str_mv Oxford University Press
publisher.none.fl_str_mv Oxford University Press
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 13.229304

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