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Fig. 2
Maps of the line ratios to Hβ. From left to right: [O III], [Fe VII] and [N II] (top); [O II], [S II]6716 and He II (middle); [O I], [S II]6731 and He I (bottom). Spatial scale is 1 arcsec px-1. North is up and east is to the left.
This figure is made of several images, please see below:
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