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arXiv · 1909.10777

Dynamical models of spheroidal multi-component stellar systems

Caterina Caravita·Luca Ciotti·Silvia Pellegrini
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Abstract

We present a significantly improved version of our numerical code JASMINE, that can now solve the Jeans equations for axisymmetric models of stellar systems, composed of an arbitrary number of stellar populations, a Dark Matter halo, and a central Black Hole. The stellar components can have different structural (density profile, flattening, mass, scale length), dynamical (rotational support, velocity dispersion anisotropy), and population (age, metallicity, Initial Mass Function, mass-to-light ratio) properties. These models, when combined with observations, will allow to investigate important issues, such as quantifying the systematic effects of IMF variations, of mass-to-light ratio gradients, and of different stellar kinematic components (e.g. counter rotating disks, kinematically decoupled cores) on luminosity-weighted properties. The developed analytical and numerical framework aims at modeling Early-Type Galaxies, but it can also be applied to dwarf Spheroidal galaxies and Globular Clusters.

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Caterina Caravita, Luca Ciotti, Silvia Pellegrini. 2019-09-24. Dynamical models of spheroidal multi-component stellar systems. https://doi.org/10.1017/s1743921319007294

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