Stability of an ellipsoidal stellar cluster in the tidal force field of the Galaxy

Details Stability of an ellipsoidal stellar cluster in the tidal force field of the Galaxy Stability of an ellipsoidal stellar cluster in the tidal force field of the Galaxy

Feb 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992kfnt....8...62k&link_type=abstract

Kinematika i Fizika Nebesnykh Tel (ISSN 0233-7665), vol. 8, Jan.-Feb. 1992, p. 62-68. In Russian.

Astronomy and Astrophysics

Astronomy

Elliptical Orbits, Galactic Structure, Star Clusters, Stellar Orbits, Astronomical Models, Floquet Theorem, Galactic Evolution, Gravitational Effects, Stellar Mass

Scientific paper

Attention is given to the dynamical characteristics of an ellipsoidal stellar cluster which rotates on an elliptical orbit relative to the center of the Galaxy in the field of its tidal forces. Regions of stability and instability of the cluster as a function of its form are defined on the basis of a numerical solution of the equations of the motion of stars inside the cluster. It is shown that, if the flattening of the cluster along the Y-axis, which coincides with the rotation direction, is larger than along the X-axis, which is directed toward the center of the Galaxy), the cluster is unstable.

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