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Arecibo, United States

Acreman D.M.,University of Exeter | Dobbs C.L.,University of Exeter | Dobbs C.L.,Max Planck Institute for Extraterrestrial Physics | Dobbs C.L.,Universitats Sternwarte Munich | And 2 more authors.
Monthly Notices of the Royal Astronomical Society | Year: 2012

We generate synthetic Hi 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 Hi emission (in better agreement with real observations) and more realistic spatial structure (including supernova blown bubbles). The synthetic data show Hi self-absorption with a morphology similar to that seen in observations. The density and temperature of the material responsible for Hi self-absorption is consistent with observationally determined values, and is found to be only weakly dependent on absorption strength and star formation efficiency. © 2012 The Authors Monthly Notices of the Royal Astronomical Society © 2012 RAS. Source

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