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Axisymmetric stability criterion for two gravitationally coupled singular isothermal discs

Yue Shen, Yu-Qing Lou

astro-pharXiv:astro-ph/0308063

Abstract

Using the two-fluid formalism with the polytropic approximation, we examine the axisymmetric stability criterion for a composite system of gravitationally coupled stellar and gaseous singular isothermal discs (SIDs).

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