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Abstract
Se presenta una nueva familia de discos gruesos newtonianos estables a partir del método de desplazamiento, corte, llenado y reflexión construidos en (González & Letelier, 2004; Vogt & Letelier, 2005). Soluciones de la ecuación de Laplace en coordenadas cilíndricas son consideradas, éstas representarán el campo gravitacional de objetos con momentos multipolares externos solamente. Se definen y calculan las cantidades físicas en el plano del disco, tales como, la frecuencia epicíclica, κ, la frecuencia vertical, ν, y la velocidad circular, vc de las partículas. Además, se determina la densidad superficial de masa, σ, la densidad del disco grueso, ρ, y el criterio de estabilidad de los discos gruesos a través del momentum angular o el criterio de Rayleigh (Rayleigh, 1917; Landau, 1987). Finalmente, se representan las propiedades físicas para algunos para ́metros considerando sólo hasta el término cuadrupolar en la expansión multipolar del potencial gravitacional.
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