Intrinsic principal axes twists in N-body models of elliptical galaxies

Details Intrinsic principal axes twists in N-body models of elliptical galaxies Intrinsic principal axes twists in N-body models of elliptical galaxies

Apr 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983mnras.203p..19g&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 203, Apr. 1983, p. 19P-23P. Research supported by the European Space Ag

Astronomy and Astrophysics

Astronomy

20

Astronomical Models, Axes Of Rotation, Elliptical Galaxies, Many Body Problem, Stellar Systems, Angular Velocity, Anisotropy, Astrodynamics, Isophotes, Spin Dynamics, Time Dependence

Scientific paper

Velocity anisotropy plays an important role in determining the shapes of elliptical galaxies. It has until now been generally assumed that the isodensity surfaces of these galaxies have common principal axes. This assumption is consistent with observations of a number of ellipticals with isophote twists and radially varying ellipticities. In the present investigation, it is argued that this interpretation of the observations may, however, not describe the general case. A description is provided of two model stellar systems which have intrinsic principal axes twists over astronomically interesting time-scales

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