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The Lynden-Bell slow bar as a determinant of the spiral-ring structure in barred galaxies

1994; Oxford University Press; Volume: 266; Issue: 1 Linguagem: Inglês

10.1093/mnras/266.1.92

1365-2966

Imad Pasha, V. L. Polyachenko,

Stellar, planetary, and galactic studies

It is demonstrated that the Lynden-Bell slow bar provides a consistent understanding of some typical features in barred galaxies. The responses of the disc surface density to a slow-bar forcing are analysed and displayed. Different values of the bar angular velocity and growth rate give rise to a variety of forms occurring in the disc: inner and outer rings, more or less open half-turn spirals, and some other resonance features.