Tailoring triaxial N-body models via a novel made-to-measure method
arXiv:0902.2069 · doi:10.1111/j.1365-2966.2009.14603.x
Abstract
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
9 pages, 6 figures, MNRAS, in press
References in corpus (7)
- Dynamical insight into dark-matter haloes
- NMAGIC: Fast Parallel Implementation of a Chi-Squared-Made-to-Measure Algorithm for Modelling Observational Data
- Dark matter content and internal dynamics of NGC 4697: NMAGIC particle models from slit data and planetary nebulae velocities
- Large-Scale Model of the Milky Way: Stellar Kinematics and Microlensing Event Timescale Distribution in the Galactic Bulge
- An Iterative Method for Constructing Equilibrium Phase Models of Stellar Systems
- Multimass spherical structure models for N-body simulations
- Multi-mass schemes for collisionless N-body simulations
Cited by in corpus (59)
- The Atlas3D project - XV. Benchmark for early-type galaxies scaling relations from 260 dynamical models: mass-to-light ratio, dark matter, Fundamental Plane and Mass Plane
- The Local Dark Matter Density
- Dynamical modelling of the Galactic bulge and bar: the Milky Way's bar pattern speed, stellar, and dark matter mass distribution
- Galaxy Masses
- A Comprehensive Search for Dark Matter Annihilation in Dwarf Galaxies
- Weakening dark-matter cusps by clumpy baryonic infall
- Revisiting the Tale of Hercules: how stars orbiting the Lagrange points visit the Sun
- An iterative method for the construction of N-body galaxy models in collisionless equilibrium
- Spherical Jeans analysis for dark matter indirect detection in dwarf spheroidal galaxies - Impact of physical parameters and triaxiality
- Rings and spirals in barred galaxies. III. Further comparisons and links to observations
- How to break the density-anisotropy degeneracy in spherical stellar systems
- Efficient solution of the anisotropic spherically-aligned axisymmetric Jeans equations of stellar hydrodynamics for galactic dynamics
- Discrete dynamical modelling of omega Centauri
- Chemodynamical Modelling of the Galactic Bulge and Bar
- A New Model for the Milky Way Bar
- The Bar and Spiral Arms in the Milky Way: Structure and Kinematics
- Tidal disruption of dwarf spheroidal galaxies: the strange case of Crater II
- A new code for orbit analysis and Schwarzschild modelling of triaxial stellar systems
- The Milky Way Tomography with SDSS. V. Mapping the Dark Matter Halo
- Elliptical galaxies with rapidly decreasing velocity dispersion profiles: NMAGIC models and dark halo parameter estimates for NGC 4494
- Breaking Beta: A comparison of mass modelling methods for spherical systems
- Recovering and from seeing-dominated IFS data
- Analysing surveys of our Galaxy -- II. Determining the potential
- Using NMAGIC to probe the dark matter halo and orbital structure of the X-ray bright, massive elliptical galaxy, NGC 4649
- Made-to measure galaxy models - I Methodology
- Torus mapper: a code for dynamical models of galaxies
- Made-to-measure galaxy models - III Modelling with Milky Way observations
- Orbital tori for non-axisymmetric galaxies
- Thin disk kinematics from RAVE and the solar motion
- Dynamics for Galactic Archaeology
- The Hercules stream as seen by APOGEE-2 South
- Analysing surveys of our Galaxy I: basic astrometric data
- Indirect Dark Matter Detection for Flattened Dwarf Galaxies
- A Schwarzschild model of the Galactic bar with initial density from N-body simulations
- Applying Schwarzschild's orbit superposition method to barred or non-barred disc galaxies
- Dynamical model of the Milky Way using APOGEE and Gaia data
- Influence of baryons on the orbital structure of dark matter haloes
- Three-integral multi-component dynamical models and simulations of the nuclear star cluster in NGC 4244
- Made-to-measure galaxy models - II Elliptical and Lenticular Galaxies
- Gravitational Lens Recovery with GLASS: Measuring the mass profile and shape of a lens
- Using Commensurabilities and Orbit Structure to Understand Barred Galaxy Evolution
- Regularizing made-to-measure particle models of galaxies
- Disc galaxy modelling with a particle-by-particle M2M method
- Non-parametric Triaxial Deprojection of Elliptical Galaxies
- M2M modelling of the Galactic disc via PRIMAL: Fitting to Gaia Error Added Data
- Made-to-measure modeling of observed galaxy dynamics
- Investigating Bar Structure of Disc Galaxies via PRIMAL: A PaRtIcle-by-particle M2M ALgorithm
- Theoretical Models of the Galactic Bulge
- Self-consistent triaxial models
- Made-to-measure galaxy modelling utilising absorption line strength data
- Extensions and applications of the iterative method
- Rediscovering the Milky Way with orbit superposition approach and APOGEE data I. Method validation
- Made-To-Measure Models of Self-Similar Triaxial Halos with Steep Inner Density Gradients
- GravSphere2: A higher-order Jeans method for mass-modeling spherical stellar systems
- Stellar Dynamical Modeling - Accuracy of 3D Density Estimation for Edge-on Axisymmetric Galaxies
- Made-to-Measure Modelling of Globular Clusters
- The validation of made-to-measure method for reconstruction of phase space distribution functions
- Dynamical Mass Determinations and Scaling Relations of Early-Type Galaxies
- A PRIMAL view of the Milky Way, made possible by Gaia and M2M modelling