Dynamical models of spheroidal multi-component stellar systems [GA]

http://arxiv.org/abs/1909.10777


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.

Read this paper on arXiv…

C. Caravita, L. Ciotti and S. Pellegrini
Wed, 25 Sep 19
53/70

Comments: 4 pages 2 figures. To appear in the Proceedings of the 351 IAU Symposium “Star Clusters: From the Milky Way to the Early Universe”