On the effect of chaotic orbits on dynamical friction

Chaotic orbits suffer significant changes as a result of small perturbations. One can thus wonder whether the dynamical friction suffered by a satellite on a regular orbit, and interacting with the stars of a galaxy, will be different if the bulk of the stars of the galaxy are in regular or chaotic...

Descripción completa

Detalles Bibliográficos
Autores principales: Cora, Sofía Alejandra, Vergne, María Marcela, Muzzio, Juan Carlos
Formato: Articulo
Lenguaje:Inglés
Publicado: 2001
Materias:
Ciencias Astronómicas
Interactions of galaxies
Kinematics
Dynamics
Numerical methods
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/93810
http://iopscience.iop.org/article/10.1086/318223/meta
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-93810
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
Interactions of galaxies
Kinematics
Dynamics
Numerical methods
spellingShingle Ciencias Astronómicas
Interactions of galaxies
Kinematics
Dynamics
Numerical methods
Cora, Sofía Alejandra
Vergne, María Marcela
Muzzio, Juan Carlos
On the effect of chaotic orbits on dynamical friction
topic_facet Ciencias Astronómicas
Interactions of galaxies
Kinematics
Dynamics
Numerical methods
description Chaotic orbits suffer significant changes as a result of small perturbations. One can thus wonder whether the dynamical friction suffered by a satellite on a regular orbit, and interacting with the stars of a galaxy, will be different if the bulk of the stars of the galaxy are in regular or chaotic orbits. In order to check that idea, we investigated the orbital decay (caused by dynamical friction) of a rigid satellite moving within a larger stellar system (a galaxy) whose potential is nonintegrable. We performed numerical experiments using two kinds of triaxial galaxy models: (1) the triaxial generalization of Dehnen´s spherical mass model (Dehnen; Merritt & Fridman); (2) a modified Satoh model (Satoh; Carpintero, Muzzio, & Wachlin). The percentages of chaotic orbits present in these models were increased by perturbing them. In the first case, a central compact object (black hole) was introduced; in the second case, the perturbation was produced by allowing the galaxy to move on a circular orbit in a logarithmic potential. The equations of motion were integrated with a non-self-consistent code. Our results show that the presence of chaotic orbits does not affect significantly the orbital decay of the satellite.
format Articulo
Articulo
author Cora, Sofía Alejandra
Vergne, María Marcela
Muzzio, Juan Carlos
author_facet Cora, Sofía Alejandra
Vergne, María Marcela
Muzzio, Juan Carlos
author_sort Cora, Sofía Alejandra
title On the effect of chaotic orbits on dynamical friction
title_short On the effect of chaotic orbits on dynamical friction
title_full On the effect of chaotic orbits on dynamical friction
title_fullStr On the effect of chaotic orbits on dynamical friction
title_full_unstemmed On the effect of chaotic orbits on dynamical friction
title_sort on the effect of chaotic orbits on dynamical friction
publishDate 2001
url http://sedici.unlp.edu.ar/handle/10915/93810
http://iopscience.iop.org/article/10.1086/318223/meta
work_keys_str_mv AT corasofiaalejandra ontheeffectofchaoticorbitsondynamicalfriction
AT vergnemariamarcela ontheeffectofchaoticorbitsondynamicalfriction
AT muzziojuancarlos ontheeffectofchaoticorbitsondynamicalfriction
bdutipo_str Repositorios
_version_ 1764820491787304962

Ejemplares similares