Thesis Introduction: Here I'm giving a fairly general introduction to the work that went into my thesis. This is mostly eared at non-astronomers, but introduces the numerical methods that we use and general goals of my thesis work.

Code Comparison: Here I'm describing the GADGET/AREPO galaxy formation code comparison project.

Feedback in AREPO Here I describe the feedback modules that we implemented into AREPO to regulate the stellar mass growth of galaxies. I describe the feedback modules themselves, as well some evolving galaxy scaling relations and how they compare against observations.

Illustris Simulation Observatory: Here I describe the "Illustris Simulation Observatory": a catalog of mock images and spectra that I generated directly from the Illustris simulation output. One interesting result is how well stellar masses can be recovered from the mock spectra that we generate.