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Type: Artigo de periódico
Title: Analytical potential-density pairs for flat rings and toroidal structures
Author: Vogt, D
Letelier, PS
Abstract: The Kuzmin-Toomre family of discs is used to construct potential-density pairs that represent flat ring structures in terms of elementary functions. Systems composed of two concentric flat rings, a central disc surrounded by one ring and a ring with a centre of attraction are also presented. The circular velocity of test particles and the epicyclic frequency of small oscillations about circular orbits are calculated for these structures. A few examples of three-dimensional potential-density pairs of 'inflated' flat rings (toroidal mass distributions) are presented.
Subject: planets: rings
galaxies: kinematics and dynamics
Country: EUA
Editor: Wiley-blackwell Publishing, Inc
Rights: aberto
Identifier DOI: 10.1111/j.1365-2966.2009.14803.x
Date Issue: 2009
Appears in Collections:Unicamp - Artigos e Outros Documentos

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