Nathan J. Goldbaum, Mark R. Krumholz, and John C. Forbes. (2016)cite arxiv:1605.00646Comment: 16 pages, 13 figures. Resubmitted to the Astrophysical Journal after responding to referee comments. 6 TB of simulation data and processed derived data are available at http://dx.doi.org/10.13012/J85Q4T1T. An interactive data exploration widget is available at https://demo.use.yt (click "galaxy_visualization.ipynb"; once the Jupyter notebook launches, click "Cell -> Run All").