SIMBAD references

2000MNRAS.311..297D - Mon. Not. R. Astron. Soc., 311, 297-306 (2000/January-2)

Approximate third integrals for axisymmetric potentials using local Stackel fits.

DE BRUYNE V., LEEUWIN F. and DEJONGHE H.

Abstract (from CDS):

We use a set of Stäckel potentials to obtain a local approximation for an effective third integral in axisymmetric systems. We present a study on the feasibility and effectiveness of this approach. We apply it to three trial potentials of various flattenings, corresponding to nearly ellipsoidal, discy and boxy density isophotes. In all three cases, a good fit to the potential requires only a small set of Stäckel potentials, and the associated Stäckel third integral provides a very satisfactory, yet analytically simple, approximation to the trial potentials effective third integral.

Abstract Copyright: 2000, Royal Astronomical Society

Journal keyword(s): methods: analytical - methods: numerical - galaxies: elliptical and lenticular, cD - galaxies: kinematics and dynamics - galaxies: structure

Simbad objects: 1

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