The angular momentum behavior in the dissipationless collapse of triaxial systems

Details The angular momentum behavior in the dissipationless collapse of triaxial systems The angular momentum behavior in the dissipationless collapse of triaxial systems

Aug 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993apj...413...70c&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 413, no. 1, p. 70-78.

Astronomy and Astrophysics

Astrophysics

20

Angular Momentum, Elliptical Galaxies, Gravitational Collapse, Stellar Motions, Stellar Systems, Celestial Mechanics, Galactic Evolution, Star Formation

Scientific paper

We present N-body simulations of the collapse of six triaxial systems having the angular momentum aligned with one of their principal axes. Two different initial density distributions are chosen. The final relaxed states of the simulations show (1) a net outflow of angular momentum from the inner regions to the outer halo, consistent with the loss expected during the formation of elliptical galaxies; (2) a general misalignment of the average spin of the internal mass fractions with respect to that of the total system. Finally, some considerations are given concerning the occurrence of the necessary condition for the formation of a black hole at the center of these systems.

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