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A numerical study on the distribution of the debris of the Milky Way satellites

Published online by Cambridge University Press:  30 October 2019

Matteo Mazzarini Open the ORCID record for Matteo Mazzarini [Opens in a new window]  and
Andreas Just Open the ORCID record for Andreas Just [Opens in a new window]
Matteo Mazzarini
Affiliation:
Astronomisches Rechen-Institut, Zentrum für Astronomie Heidelberg, Heidelberg University, Mönchhofstr. 12-14, 69120 Heidelberg, Germany email: [email protected]
Andreas Just
Affiliation:
Astronomisches Rechen-Institut, Zentrum für Astronomie Heidelberg, Heidelberg University, Mönchhofstr. 12-14, 69120 Heidelberg, Germany email: [email protected]
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Abstract

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We perform six N-body simulations reproducing the interaction between the Milky Way and its satellite galaxies, in order to address the deposit of satellite debris in the Galactic environment. We find that most of the baryons survive inside their host satellites and that most of the baryonic debris ends up in the inner regions of the Milky Way, in contrast to the more uniform distribution of dark matter debris. We also look at the debris Inertia tensor in the inner regions of the Milky Way and find a lower minor-to-major axis ratio for baryons than dark matter. We plan to explore the phase-space distribution of the debris ending in the Galactic disk and bulge. We also plan further simulations including gas dynamics to study the impact of gas on the process.

Keywords

methods: n-body simulationsGalaxy: kinematics and dynamicsgalaxies: dwarf
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 14 , Symposium S344: Dwarf Galaxies: From the Deep Universe to the Present , August 2018 , pp. 105 - 108
Copyright
© International Astronomical Union 2019 

Footnotes

†

Fellow of the International Max Planck Research School for Astronomy and Cosmic Physics at the University of Heidelberg (IMPRS-HD).

References

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