Instability zones for satellites of asteroids: The example of the (87) Sylvia system

Nenhuma Miniatura disponível

Data

2012-07-01

Orientador

Coorientador

Pós-graduação

Curso de graduação

Título da Revista

ISSN da Revista

Título de Volume

Editor

Academic Press Inc. Elsevier B.V.

Tipo

Artigo

Direito de acesso

Acesso restrito

Resumo

The stability of the (87) Sylvia system and of the neighborhood of its two satellites is investigated. We use numerical integrations considering the non-sphericity of Sylvia, as well as the mutual perturbation of the satellites and the solar perturbation. Two numerical models have been used, which describe respectively the short and long-term evolution of the system. We show that the actual system is in a deeply stable zone, but surrounded by both fast and secular chaotic regions due to mean-motion and evection resonances. We then investigate how tidal and BYORP effects modify the location of the system over time with respect to the instability zones. The conclusion is that the system will cross the evection resonance before 1 Gyr.We generalize this study to other known triple systems, investigate possible evolutions of the systems under tidal and BYORP effects, and discuss their distance from instability regions. In particular, it is possible to show how systems in a joint opposing evolution can be destroyed depending on the masses of the satellites and their dissipative parameters. (C) 2012 Elsevier B.V. All rights reserved.

Descrição

Idioma

Inglês

Como citar

Icarus. San Diego: Academic Press Inc. Elsevier B.V., v. 220, n. 1, p. 149-161, 2012.

Itens relacionados