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Fig. 5.


Model HI distributions of the galactic disk (grey-scale) with i = 90°. Grey-scale levels are (4, 7, 14, 22, 30, 36, 43, 50, 58, 65, 72, 80) × 1020 cm−2. The stellar content is shown with contours. To guide the eye, the vertical lines delimit the extent of the observed HI distribution.

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