Tailoring triaxial N-body models via a novel made-to-measure method

Details Tailoring triaxial N-body models via a novel made-to-measure method Tailoring triaxial N-body models via a novel made-to-measure method

2009-02-12

arxiv.org/abs/0902.2069v1

Mon.Not.Roy.Astron.Soc.395:1079-1086,2009

Astronomy and Astrophysics

Astrophysics

Galaxy Astrophysics

9 pages, 6 figures, MNRAS, in press

Scientific paper

10.1111/j.1365-2966.2009.14603.x

The made-to-measure N-body method (Syer & Tremaine 1996) slowly adapts the particle weights of an N-body model, whilst integrating the trajectories in an assumed static potential, until some constraints are satisfied, such as optimal fits to observational data. I propose a novel technique for this adaption procedure, which overcomes several limitations and shortcomings of the original method. The capability of the new technique is demonstrated by generating realistic N-body equilibrium models for dark-matter haloes with prescribed density profile, triaxial shape, and slowly outwardly growing radial velocity anisotropy

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