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Stellar Spirals in Triaxial Dark Matter Halos

Published online by Cambridge University Press:  21 March 2017

Shaoran Hu  and
Debora Sijacki
Shaoran Hu
Affiliation:
Institute of Astronomy and Kavli Institute for Cosmology, University of Cambridge, Madingley Road, Cambridge CB3 0HA, email: sh759@ast.cam.ac.uk
Debora Sijacki
Affiliation:
Institute of Astronomy and Kavli Institute for Cosmology, University of Cambridge, Madingley Road, Cambridge CB3 0HA, email: sh759@ast.cam.ac.uk
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Abstract

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Two-armed grand-design spirals may form if the shape of its dark matter halo changes abruptly enough. The feasibility of such a mechanism is tested in realistic simulations. The interplay of such externally-driven spirals and self-induced transient spirals is then studied. Subhaloes are also found to lead to transient grand-design spiral structures when they impact the disk.

Keywords

galaxies: spiralgalaxies: kinematics and dynamicsgalaxies: halos
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 11 , Symposium S321: Formation and Evolution of Galaxy Outskirts , March 2016 , pp. 120
Copyright
Copyright © International Astronomical Union 2017 

References

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