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Astrophysics and Space Science

, Volume 107, Issue 2, pp 209–222 | Cite as

Interaction of the Large Magellanic Cloud with the halo population and the companions of the Galaxy

  • Mauri J. Valtonen
  • Kimmo A. Innanen
  • Leena Tähtinen
Article

Abstract

Numerical simulations have been performed in order to study the gravitational interaction between the outlying population of the Galaxy and the Large Magellanic Cloud (LMC). The following effects have been noted: (1) halo objects are partially removed from the orbital distance of the LMC such that a local minimum is created in the radial density profile; (2) a large number of halo objects go into escape orbits. This possibility makes the determination of the mass of the Galaxy by virial theorem arguments unreliable; (3) the orbit of the LMC decays faster than what one would expect on the basis of the classical dynamical friction calculation. The excess friction derives from three-body effects, which are not accounted for in the classical dynamical friction. Finally, the fates of globular clusters and dwarf galaxies near the Galaxy and the LMC are discussed.

Keywords

Local Minimum Density Profile Globular Cluster Gravitational Interaction Dynamical Friction 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© D. Reidel Publishing Company 1984

Authors and Affiliations

  • Mauri J. Valtonen
    • 1
  • Kimmo A. Innanen
    • 1
    • 2
  • Leena Tähtinen
    • 1
  1. 1.Turku University ObservatoryUniversity of TurkuFinland
  2. 2.Physics Dept.York UniversityTorontoCanada

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