SEARCH

SEARCH BY CITATION

Keywords:

  • methods: numerical;
  • surveys;
  • ISM: atoms;
  • ISM: structure

ABSTRACT

We generate synthetic H i Galactic plane surveys from spiral galaxy simulations which include stellar feedback processes. Compared to a model without feedback we find an increased scale height of H i emission (in better agreement with real observations) and more realistic spatial structure (including supernova blown bubbles). The synthetic data show H i self-absorption with a morphology similar to that seen in observations. The density and temperature of the material responsible for H i self-absorption is consistent with observationally determined values, and is found to be only weakly dependent on absorption strength and star formation efficiency.