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Fig. 9

Recent massive star formation of NGC 4330. Grayscale: Hα emission. Darker regions are regions with less Hα emission. Solid contours: molecular gas emission. Upper panel: Hα and CO(2–1) observations. Lower panel: model. Dotted contours: extinction-free column density of the model stellar disk.
This figure is made of several images, please see below:
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