Fig. 1.
Left: BVR color-composite image of NGC 2997 reconstructed from the data cube. Middle: Hα map derived from fitting the emission line. The two dashed ellipses correspond to 0.2× and 1 × R25 in the frame of the galactic disk. This work focuses on H II regions falling in between the two ellipses. Right: ionized gas velocity field measured from fitting emission lines. North is to the top and east to the left.
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