Astronomy and Astrophysics – Astrophysics
Scientific paper
1997-05-19
Astronomy and Astrophysics
Astrophysics
14 Latex pages, 12 Postscript figures, uses aastex, epsf.sty. Submitted to The Astronomical Journal, May 1997
Scientific paper
10.1086/118578
The orbital structure of triaxial models with weak central density cusps, $\rho\propto r^{-\gamma}, gamma < 1$, is investigated. The stability of the $x$- (long-) axis orbit -- and hence the existence of box orbits -- depends sensitively on $\gamma$; the range of model shapes for which the $x$-axis orbit is stable becomes progressively smaller as $\gamma$ approaches one. The banana and fish boxlets in the $x-z$ (long axis-short axis) plane are stable over a wide range of model parameters. The boxlets in the $x-y$ and $y-z$ planes are generally vertically unstable.
Fridman Tema
Merritt David
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