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Type: Artigo de periódico
Title: Numerical self-consistent stellar models of thin disks
Author: Ujevic, M
Letelier, PS
Abstract: We find a numerical self-consistent stellar model by finding the distribution function of a thin disk that satisfies simultaneously the Fokker-Planck and Poisson equations. The solution of the Fokker-Planck equation is found by a direct numerical solver using finite differences and a variation of Stone's method. The collision term in the Fokker-Planck equation is found using the local approximation and the Rosenbluth potentials. The resulting diffusion coefficients are explicitly evaluated using a Maxwellian distribution for the field stars. As a paradigmatic example, we apply the numerical formalism to find the distribution function of a Kuzmin-Toomre thin disk. This example is studied in some detail showing that the method applies to a large family of actual galaxies.
Subject: stellar dynamics
methods : numerical
galaxies : general
Country: França
Editor: Edp Sciences S A
Rights: aberto
Identifier DOI: 10.1051/0004-6361:20053176
Date Issue: 2005
Appears in Collections:Unicamp - Artigos e Outros Documentos

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