Regular and chaotic motion in elliptical galaxies

Autores
Muzzio, Juan Carlos
Año de publicación
2007
Idioma
inglés
Tipo de recurso
documento de conferencia
Estado
versión publicada
Descripción
Here I review recent work, by other authors and by myself, on some particular topics related to the regular and chaotic motion in elliptical galaxies. I show that it is quite possible to build highly stable triaxial stellar systems that include large fractions of chaotic orbits and that partially and fully chaotic orbits fill different regions of space, so that it is important not to group them together under the single denomination of chaotic orbits. Partially chaotic orbits should not be confused with weakly fully chaotic orbits either, and their spatial distributions are also different. Slow figure rotation (i.e., rotation in systems with zero angular momentum) seems to be always present in highly flattened models that result from cold collapses, with the rotational velocity diminishing or becoming negligibly small for less flattened models. Finally, I comment on the usefulness and limitation of the classification of regular orbits via frequency analysis.
Facultad de Ciencias Astronómicas y Geofísicas
Instituto de Astrofísica de La Plata
Materia
Astronomía
Galactic Dynamics
Regular and Chaotic Motion
Elliptical Galaxies
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/129374
Acceder
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spelling Regular and chaotic motion in elliptical galaxiesMuzzio, Juan CarlosAstronomíaGalactic DynamicsRegular and Chaotic MotionElliptical GalaxiesHere I review recent work, by other authors and by myself, on some particular topics related to the regular and chaotic motion in elliptical galaxies. I show that it is quite possible to build highly stable triaxial stellar systems that include large fractions of chaotic orbits and that partially and fully chaotic orbits fill different regions of space, so that it is important not to group them together under the single denomination of chaotic orbits. Partially chaotic orbits should not be confused with weakly fully chaotic orbits either, and their spatial distributions are also different. Slow figure rotation (i.e., rotation in systems with zero angular momentum) seems to be always present in highly flattened models that result from cold collapses, with the rotational velocity diminishing or becoming negligibly small for less flattened models. Finally, I comment on the usefulness and limitation of the classification of regular orbits via frequency analysis.Facultad de Ciencias Astronómicas y GeofísicasInstituto de Astrofísica de La Plata2007-09info:eu-repo/semantics/conferenceObjectinfo:eu-repo/semantics/publishedVersionObjeto de conferenciahttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciaapplication/pdf203-214http://sedici.unlp.edu.ar/handle/10915/129374enginfo:eu-repo/semantics/altIdentifier/isbn/978-3-540-75826-6info:eu-repo/semantics/altIdentifier/isbn/978-3-540-75825-9info:eu-repo/semantics/altIdentifier/issn/1570-6591info:eu-repo/semantics/altIdentifier/issn/1570-6605info:eu-repo/semantics/altIdentifier/arxiv/0802.4025info:eu-repo/semantics/altIdentifier/doi/10.1007/978-3-540-75826-6_19info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-10-15T11:23:08Zoai:sedici.unlp.edu.ar:10915/129374Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-10-15 11:23:08.853SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Regular and chaotic motion in elliptical galaxies
title Regular and chaotic motion in elliptical galaxies
spellingShingle Regular and chaotic motion in elliptical galaxies
Muzzio, Juan Carlos
Astronomía
Galactic Dynamics
Regular and Chaotic Motion
Elliptical Galaxies
title_short Regular and chaotic motion in elliptical galaxies
title_full Regular and chaotic motion in elliptical galaxies
title_fullStr Regular and chaotic motion in elliptical galaxies
title_full_unstemmed Regular and chaotic motion in elliptical galaxies
title_sort Regular and chaotic motion in elliptical galaxies
dc.creator.none.fl_str_mv Muzzio, Juan Carlos
author Muzzio, Juan Carlos
author_facet Muzzio, Juan Carlos
author_role author
dc.subject.none.fl_str_mv Astronomía
Galactic Dynamics
Regular and Chaotic Motion
Elliptical Galaxies
topic Astronomía
Galactic Dynamics
Regular and Chaotic Motion
Elliptical Galaxies
dc.description.none.fl_txt_mv Here I review recent work, by other authors and by myself, on some particular topics related to the regular and chaotic motion in elliptical galaxies. I show that it is quite possible to build highly stable triaxial stellar systems that include large fractions of chaotic orbits and that partially and fully chaotic orbits fill different regions of space, so that it is important not to group them together under the single denomination of chaotic orbits. Partially chaotic orbits should not be confused with weakly fully chaotic orbits either, and their spatial distributions are also different. Slow figure rotation (i.e., rotation in systems with zero angular momentum) seems to be always present in highly flattened models that result from cold collapses, with the rotational velocity diminishing or becoming negligibly small for less flattened models. Finally, I comment on the usefulness and limitation of the classification of regular orbits via frequency analysis.
Facultad de Ciencias Astronómicas y Geofísicas
Instituto de Astrofísica de La Plata
description Here I review recent work, by other authors and by myself, on some particular topics related to the regular and chaotic motion in elliptical galaxies. I show that it is quite possible to build highly stable triaxial stellar systems that include large fractions of chaotic orbits and that partially and fully chaotic orbits fill different regions of space, so that it is important not to group them together under the single denomination of chaotic orbits. Partially chaotic orbits should not be confused with weakly fully chaotic orbits either, and their spatial distributions are also different. Slow figure rotation (i.e., rotation in systems with zero angular momentum) seems to be always present in highly flattened models that result from cold collapses, with the rotational velocity diminishing or becoming negligibly small for less flattened models. Finally, I comment on the usefulness and limitation of the classification of regular orbits via frequency analysis.
publishDate 2007
dc.date.none.fl_str_mv 2007-09
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dc.language.none.fl_str_mv eng
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info:eu-repo/semantics/altIdentifier/issn/1570-6605
info:eu-repo/semantics/altIdentifier/arxiv/0802.4025
info:eu-repo/semantics/altIdentifier/doi/10.1007/978-3-540-75826-6_19
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rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
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