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Hydrodynamic Simulations and Time-dependent Photoionization Modeling of Starburst-driven Superwinds

Published online by Cambridge University Press:  20 January 2023

A. Danehkar Open the ORCID record for A. Danehkar [Opens in a new window] ,
M. S. Oey  and
W. J. Gray
A. Danehkar
Affiliation:
Department of Astronomy, University of Michigan, Ann Arbor, MI 48109, USA email: danehkar@eurekasci.com
M. S. Oey
Affiliation:
Department of Astronomy, University of Michigan, Ann Arbor, MI 48109, USA email: danehkar@eurekasci.com
W. J. Gray
Affiliation:
Department of Astronomy, University of Michigan, Ann Arbor, MI 48109, USA email: danehkar@eurekasci.com
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Abstract

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Thermal energies deposited by OB stellar clusters in starburst galaxies lead to the formation of galactic superwinds. Multi-wavelength observations of starburst-driven superwinds pointed at complex thermal and ionization structures which cannot adequately be explained by simple adiabatic assumptions. In this study, we perform hydrodynamic simulations of a fluid model coupled to radiative cooling functions, and generate time-dependent non-equilibrium photoionization models to predict physical conditions and ionization structures of superwinds using the maihem atomic and cooling package built on the program flash. Time-dependent ionization states and physical conditions produced by our simulations are used to calculate the emission lines of superwinds for various parameters, which allow us to explore implications of non-equilibrium ionization for starburst regions with potential radiative cooling.

Keywords

Stars: winds outflowsgalaxies: starbursthydrodynamicsISM: bubblesradiation mechanisms: generalgalaxies: star clustersintergalactic medium
Type
Contributed Paper
Information
Proceedings of the International Astronomical Union , Volume 16 , Symposium S362: The Predictive Power of Computational Astrophysics as a Discovery Tool , June 2020 , pp. 64 - 69
Creative Commons
Creative Common License - CCCreative Common License - BY
This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution, and reproduction in any medium, provided the original work is properly cited.
Copyright
© The Author(s), 2023. Published by Cambridge University Press on behalf of International Astronomical Union

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