Fig. 1

NHi maps of the three Gaussian-based HI phases: CNM (top left), UNM (top right), and WNM (bottom left) over the portion of the southern Galactic cap (b ≤ −30°) covered by the GASS HI survey, at 1° resolution. Coloured region corresponds to the selected region SGC34 (bottom right). Orthographic projection in Galactic coordinates: latitudes and longitudes marked by lines and circles respectively.
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