Perturbation configurations in a two-fluid system of singular isothermal disks
arXiv:astro-ph/0304270 · doi:10.1046/j.1365-8711.2003.06710.x
Abstract
We investigate properties of stationary aligned and unaligned spiral perturbation configurations in a composite system of gravitationally coupled stellar and gaseous singular isothermal disks (SIDs) using the two-fluid formalism. We obtain stationary perturbation solutions for aligned and unaligned spiral logarithmic configurations in such a composite SID system and derive analytically existence criteria for these solutions. In comparison with the similar problem of a single SID studied by Shu et al. (2000), there are now two possible sets of solutions owing to an additional SID.
arXiv comment23 pages, 16 figures, accepted by MNRAS
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- Correlations among Multi-Wavelength Luminosities of Star-Forming Galaxies
- Global Perturbation Configurations in a Composite Disc System with an Isopedic Magnetic Field
- Axisymmetric stability criteria for a composite system of stellar and magnetized gaseous singular isothermal discs
- Global axisymmetric stability analysis for a composite system of two gravitationally coupled scale-free discs
- Global structures in a composite system of two scale-free discs with a coplanar magnetic field
- Scale-Free Thin Discs with an Isopedic Magnetic Field
- Global non-axisymmetric perturbation configurations in a composite disc system with an isopedic magnetic field: relation between dark matter halo and magnetic field