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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Analysing the region of the rings and small satellites of Neptune

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Gaslac Gallardo, D. M. [1] ; Giuliatti Winter, S. M. [1] ; Madeira, G. [1] ; Munoz-Gutierrez, M. A. [2]
Total Authors: 4
[1] Sao Paulo State Univ, UNESP, Grp Dinam Orbital & Planetol, Av Ariberto Pereira da Cunha 333, BR-12516410 Guaratingueta, SP - Brazil
[2] Acad Sinica, Inst Astron & Astrophys, Taipei 10617 - Taiwan
Total Affiliations: 2
Document type: Journal article
Source: ASTROPHYSICS AND SPACE SCIENCE; v. 365, n. 1 JAN 2020.
Web of Science Citations: 0

The ring system and small satellites of Neptune were discovered during Voyager 2 flyby in 1989 (Smith et al. in Science 246:1422, 1989). In this work we analyse the diffusion maps which can give an overview of the system. As a result we found the width of unstable and stable regions close to each satellite. The innermost Galle ring, which is further from the satellites, is located in a stable region, while Lassel ring (W = 4000 km) has its inner border in a stable region depending on its eccentricity. The same happens to the Le Verrier and Adams rings, they are stable for small values of the eccentricity. They can survive to the close satellites perturbation only for values of e < 0.012. When the solar radiation force is taken into account the rings composed by 1 mu m sized particles have a lifetime of about 104 years while larger particles (10 mu m in radius) can survive up to 105 years. The satellites Naiad, Thalassa and Despina can help replenish the lost particles of the Le Verrier, Arago and Lassel rings, while the ejecta produced by Galatea, Larissa and Proteus do not have enough velocity to escape from the satellite gravity. (AU)

FAPESP's process: 16/24561-0 - On the relevance of small bodies in orbital dynamics
Grantee:Othon Cabo Winter
Support Opportunities: Research Projects - Thematic Grants
FAPESP's process: 18/23568-6 - Scenarios for the formation of Neptune's arcs and the giant satellites of the Solar System
Grantee:Gustavo Oliveira Madeira
Support Opportunities: Scholarships in Brazil - Doctorate
FAPESP's process: 16/24488-0 - Orbital evolution study of particles in Lindblad and corotation resonances and under influence of coorbitals satellites: planetary arcs application
Grantee:Gustavo Oliveira Madeira
Support Opportunities: Scholarships in Brazil - Master