Journal Article

Tailoring triaxial <i>N</i>-body models via a novel made-to-measure method

Walter Dehnen

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 395, issue 2, pages 1079-1086
Published in print May 2009 | ISSN: 0035-8711
Published online April 2009 | e-ISSN: 1365-2966 | DOI: http://dx.doi.org/10.1111/j.1365-2966.2009.14603.x
Tailoring triaxial N-body models via a novel made-to-measure method

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The made-to-measure N-body method 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.

Keywords: stellar dynamics; methods: N-body simulations; galaxies: haloes; galaxies: kinematics and dynamics; galaxies: structure

Journal Article.  5989 words.  Illustrated.

Subjects: Astronomy and Astrophysics

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