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Dynamically stable models for galaxies

Published online by Cambridge University Press:  11 March 2020

Jörg Dabringhausen Open the ORCID record for Jörg Dabringhausen [Opens in a new window] ,
Ladislav Šubr Open the ORCID record for Ladislav Šubr [Opens in a new window]  and
Anja Feldmeier-Krause
Jörg Dabringhausen
Affiliation:
Astronomicky ustav, Universita Karlova, V Holesovickach 2, 180 00 Prague, Czech Republic email: subr@sirrah.troja.mff.cuni.cz
Ladislav Šubr
Affiliation:
Astronomicky ustav, Universita Karlova, V Holesovickach 2, 180 00 Prague, Czech Republic email: subr@sirrah.troja.mff.cuni.cz
Anja Feldmeier-Krause
Affiliation:
Department of Astronomy and Astrophysics, University of Chicago, 5640 S. Ellis Ave, Chicago, IL60637, United States of America email: afeldmei@uchicago.edu
Rights & Permissions [Opens in a new window]

Abstract

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A popular approach to model galaxies is Schwarzschild’s method. For this method, a grid of sample orbits of stars in an external potential is calculated, and a model for the stellar system is obtained through attributing specific weights to the orbits in a superposition of them. The models created with Schwarzschild’s method can fit many observed properties of the modeled stellar system with high precision. However, systems that are stationary as Schwarzschild models may therefore exhibit a strong time evolution if they are translated into more realistic self-gravitating models. The issue is highlighted with the Galactic center as an example.

Keywords

galaxies: kinematics and dynamicsmethods: numerical
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. 72 - 75
Copyright
© International Astronomical Union 2020

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