Astrophysics and Space Science

, Volume 105, Issue 1, pp 109–130 | Cite as

Flat rotation curves according to the fragmentation/shear flow model of galaxy formation

  • Wilbur K. Brown
Article

Abstract

Initial conditions are derived from the fragmentation/shear flow model of galaxy formation and are used as input to the viscous action presumed to begin as soon as a galactic disk forms. A simple differential equation is found to describe the turbulent viscous evolution of a flat disk. Solutions to this equation produce rotation curves that closely resemble those observed in spiral and elliptical galaxies. For spirals, by using the mass distributions derived from the rotation curves and from Seiden's theory of star formation, exponential luminosity profiles are produced.

Keywords

Differential Equation Mass Distribution Flow Model Star Formation Rotation Curve 

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Copyright information

© D. Reidel Publishing Company 1984

Authors and Affiliations

  • Wilbur K. Brown
    • 1
  1. 1.Los Alamos National LaboratoryLos AlamosUSA

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