An Iterative Method for Constructing Equilibrium Phase Models of Stellar Systems

Abstract

We present a new method for constructing equilibrium phase models for stellar systems, which we call the iterative method. It relies on constrained, or guided evolution, so that the equilibrium solution has a number of desired parameters and/or constraints. This method is very powerful, to a large extent due to its simplicity. It can be used for mass distributions with an arbitrary geometry and a large variety of kinematical constraints. We present several examples illustrating it. Applications of this method include the creation of initial conditions for N-body simulations and the modelling of galaxies from their photometric and kinematic observations.

14 pages, 13 figures, Accepted for publication in MNRAS

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• Numerical Simulations of Bubble-Induced Star Formation in Dwarf Irregular Galaxies with a Novel Stellar Feedback Scheme
• Applying Schwarzschild's orbit superposition method to barred or non-barred disc galaxies
• The Connection between Star Formation and Metallicity Evolution in Barred Spiral Galaxies
• What the Milky Way bulge reveals about the initial metallicity gradients in the disc
• Mergers, tidal interactions, and mass exchange in a population of disc globular clusters
• Made-to-measure galaxy models - II Elliptical and Lenticular Galaxies
• Bars and boxy/peanut bulges in thin and thick discs. II. Can bars form in hot thick discs?
• The disc origin of the Milky Way bulge: On the necessity of the thick disc
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• Regularizing made-to-measure particle models of galaxies
• Metallicity distributions of halo stars: do they trace the Galactic accretion history?
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• Disc galaxy modelling with a particle-by-particle M2M method
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• Orbital classification in an N-body bar
• The Coupling of Galactic Dark Matter Halos with Stellar Bars
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• Bending instability in galactic discs. Advocacy of the linear theory
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• Stellar Bars in Spinning Halos: Delayed Buckling and Absence of Slowdown
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• Buckling bars in nearly face-on galaxies observed with MaNGA
• Chaotic mixing and the secular evolution of triaxial cuspy galaxy models built with Schwarzschild's method
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• Bar-driven Leading Spiral Arms in a Counter-rotating Dark Matter Halo
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• Extensions and applications of the iterative method
• Made-To-Measure Models of Self-Similar Triaxial Halos with Steep Inner Density Gradients
• Dynamical models of the elliptical galaxy NGC 4494
• The disc origin of the Milky Way bulge: On the high velocity dispersion of metal-rich stars at low latitude
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• Numerical Study of Bar Suppression in Galaxy Models Due to Disc Heating