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Made-to-measure N-body systems | | D. Syer
; S. Tremaine
; | | Date: |
13 May 1996 | | Abstract: | We describe an algorithm for constructing N-body realisations of equilibrium stellar systems. The algorithm complements existing orbit-based modelling techniques using linear programming or other optimization algorithms. The equilibria are constructed by integrating an N-body system while slowly adjusting the masses of the particles until the time-averaged density field and other observables converge to a prescribed value. The procedure can be arranged to maximise a linear combination of the entropy of the system and the $chi^2$ statistic for the observables. The equilibria so produced may be useful as initial conditions for N-body simulations or for modelling observations of individual galaxies. | | Source: | arXiv, astro-ph/9605061 | | Services: | Forum | Review | PDF | Favorites | |
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