Busca avançada
Ano de início
Entree
(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

On the location of the ring around the dwarf planet Haumea

Texto completo
Autor(es):
Winter, O. C. [1] ; Borderes-Motta, G. [1] ; Ribeiro, T. [1]
Número total de Autores: 3
Afiliação do(s) autor(es):
[1] Sao Paulo State Univ UNESP, Grp Dinam Orbital & Planetol, BR-12516410 Guaratingueta, SP - Brazil
Número total de Afiliações: 1
Tipo de documento: Artigo Científico
Fonte: Monthly Notices of the Royal Astronomical Society; v. 484, n. 3, p. 3765-3771, APR 2019.
Citações Web of Science: 0
Resumo

The recently discovered ring around the dwarf planet (136108) Haumea is located near the 1:3 resonance between the orbital motion of the ring particles and the spin of Haumea. In the current work, we study the dynamics of individual particles in the region where the ring is located. Using the Poincare surface of section technique, the islands of stability associated with the 1:3 resonance are identified and studied. Throughout its existence, this resonance is shown to be doubled, producing pairs of periodic and quasi-periodic orbits. The fact of being doubled introduces a separatrix, which generates a chaotic layer that reduces the size of the stable regions of the 1:3 resonance significantly. The results also show that there is a minimum equivalent eccentricity (e(1 : 3)) required for the existence of such a resonance. This value seems to be too high to keep a particle within the borders of the ring. On the other hand, the Poincare surface of sections shows the existence of much larger stable regions, but associated with a family of first-kind periodic orbits. They exist with equivalent eccentricity values lower than e(1:)( 3), covering a large radial distance, which encompasses the region of Haumea's ring. Therefore, this analysis suggests that Haumea's ring is in a stable region associated with a first-kind periodic orbit instead of the 1:3 resonance. (AU)

Processo FAPESP: 16/24561-0 - A relevância dos pequenos corpos em dinâmica orbital
Beneficiário:Othon Cabo Winter
Linha de fomento: Auxílio à Pesquisa - Temático
Processo FAPESP: 16/03727-7 - Estudos sobre a dinâmica dos anéis de Chariklo
Beneficiário:Taís Alves Silva Ribeiro
Linha de fomento: Bolsas no Brasil - Mestrado