Interaction of the large Magellanic Cloud with the halo population and the companions of the galaxy

Details Interaction of the large Magellanic Cloud with the halo population and the companions of the galaxy Interaction of the large Magellanic Cloud with the halo population and the companions of the galaxy

Dec 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984ap%26ss.107..209v&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 107, no. 2, Dec. 1984, p. 209-222. Research supported by the Natural Scien

Statistics

Computation

10

Celestial Mechanics, Galactic Structure, Interacting Galaxies, Local Group (Astronomy), Magellanic Clouds, Milky Way Galaxy, Computational Astrophysics, Density Distribution, Friction, Three Body Problem

Scientific paper

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 calculations. 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.

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