Reconstructing Two-Integral Distribution Functions from Moments

Details Reconstructing Two-Integral Distribution Functions from Moments Reconstructing Two-Integral Distribution Functions from Moments

Dec 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995mnras.277.1185m&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Vol. 277, NO. 4/DEC15, P.1185, 1995

Astronomy and Astrophysics

Astronomy

8

Scientific paper

I present a method for calculating distribution functions (DFs) of axisymmetric galaxy models which depend only on the two classical integrals of motion. It uses the higher-order Jeans equations to calculate the velocity moments of the model and reconstructs the DF from the moments as a Legendre series. Tests on models with known DFs indicate that the method generally works quite well, though it has problems coping with divergent DFs.

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