Hydrodynamic Simulations and Time-dependent Photoionization Modeling of Starburst-driven Superwinds
Abstract
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
Cite
@article{arxiv.2302.09165,
title = {Hydrodynamic Simulations and Time-dependent Photoionization Modeling of Starburst-driven Superwinds},
author = {A. Danehkar and M. S. Oey and W. J. Gray},
journal= {arXiv preprint arXiv:2302.09165},
year = {2023}
}
Comments
6 pages, 2 figures, talk presented at the IAU Symposium 362 "Predictive Power of Computational Astrophysics as a Discovery Tool", November 2021