Models of cuspy triaxial stellar systems - II. Regular orbits

In the first paper of this series we used the <i>N</i>-body method to build a dozen cuspy (γ ≃ 1) triaxial models of stellar systems, and we showed that they were highly stable over time intervals of the order of a Hubble time, even though they had very large fractions of chaotic orbits...

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Detalles Bibliográficos
Autores principales: Muzzio, Juan Carlos, Navone, Hugo Daniel, Zorzi, Alejandra Francisca
Formato: Articulo
Lenguaje:Inglés
Publicado: 2013
Materias:
Ciencias Astronómicas
Methods: numerical
galaxies: elliptical and lenticular, cD
galaxies: kinematics and dynamics
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/85434
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-85434
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Astronómicas
Methods: numerical
galaxies: elliptical and lenticular, cD
galaxies: kinematics and dynamics
spellingShingle Ciencias Astronómicas
Methods: numerical
galaxies: elliptical and lenticular, cD
galaxies: kinematics and dynamics
Muzzio, Juan Carlos
Navone, Hugo Daniel
Zorzi, Alejandra Francisca
Models of cuspy triaxial stellar systems - II. Regular orbits
topic_facet Ciencias Astronómicas
Methods: numerical
galaxies: elliptical and lenticular, cD
galaxies: kinematics and dynamics
description In the first paper of this series we used the <i>N</i>-body method to build a dozen cuspy (γ ≃ 1) triaxial models of stellar systems, and we showed that they were highly stable over time intervals of the order of a Hubble time, even though they had very large fractions of chaotic orbits (more than 85 per cent in some cases). The models were grouped in four sets, each one comprising models morphologically resembling E2, E3, E4 and E5 galaxies, respectively. The three models within each set, although different, had the same global properties and were statistically equivalent. In the present paper we use frequency analysis to classify the regular orbits of those models. The bulk of those orbits are short-axis tubes, with a significant fraction of long-axis tubes (LATs) in the E2 models that decreases in the E3 and E4 models to become negligibly small in the E5 models. Most of the LATs in the E2 and E3 models are outer LATs, but the situation reverses in the E4 and E5 models where the few LATs are mainly inner LATs. As could be expected for cuspy models, most of the boxes are resonant orbits, i.e. boxlets. Nevertheless, only the (x, y) fishes of models E3 and E4 amount to about 10 per cent of the regular orbits, with most of the fractions of the other boxlets being of the order of 1 per cent or less.
format Articulo
Articulo
author Muzzio, Juan Carlos
Navone, Hugo Daniel
Zorzi, Alejandra Francisca
author_facet Muzzio, Juan Carlos
Navone, Hugo Daniel
Zorzi, Alejandra Francisca
author_sort Muzzio, Juan Carlos
title Models of cuspy triaxial stellar systems - II. Regular orbits
title_short Models of cuspy triaxial stellar systems - II. Regular orbits
title_full Models of cuspy triaxial stellar systems - II. Regular orbits
title_fullStr Models of cuspy triaxial stellar systems - II. Regular orbits
title_full_unstemmed Models of cuspy triaxial stellar systems - II. Regular orbits
title_sort models of cuspy triaxial stellar systems - ii. regular orbits
publishDate 2013
url http://sedici.unlp.edu.ar/handle/10915/85434
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AT navonehugodaniel modelsofcuspytriaxialstellarsystemsiiregularorbits
AT zorzialejandrafrancisca modelsofcuspytriaxialstellarsystemsiiregularorbits
bdutipo_str Repositorios
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