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Dynamical models of spheroidal multi-component stellar systems

Published online by Cambridge University Press:  11 March 2020

Caterina Caravita Open the ORCID record for Caterina Caravita [Opens in a new window] ,
Luca Ciotti Open the ORCID record for Luca Ciotti [Opens in a new window]  and
Silvia Pellegrini Open the ORCID record for Silvia Pellegrini [Opens in a new window]
Caterina Caravita
Affiliation:
Department of Physics and Astronomy, University of Bologna, via P. Gobetti 93/2, 40129 Bologna, Italy email: caterina.caravita2@unibo.it INAF-OAS of Bologna, via P. Gobetti 93/3, 40129 Bologna, Italy
Luca Ciotti
Affiliation:
Department of Physics and Astronomy, University of Bologna, via P. Gobetti 93/2, 40129 Bologna, Italy email: caterina.caravita2@unibo.it
Silvia Pellegrini
Affiliation:
Department of Physics and Astronomy, University of Bologna, via P. Gobetti 93/2, 40129 Bologna, Italy email: caterina.caravita2@unibo.it INAF-OAS of Bologna, via P. Gobetti 93/3, 40129 Bologna, Italy
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Abstract

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. 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.

Keywords

methods: analyticalnumericalgalaxies: elliptical and lenticulardwarfstar clustersstellar contentkinematics and dynamics
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 14 , Symposium S351: Star Clusters: From the Milky Way to the Early Universe , May 2019 , pp. 273 - 276
Copyright
© International Astronomical Union 2020

References

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