Fig. 9
Contour of the Hα flux of the tails of UGC 6697 and CGCG 97087N after the [NII] emission has been isolated and subtracted. The red circle indicates the contours arising from the residual flux of the [NII]λ6583 emitted by UGC 6697. Regions not observed are shaded in gray. Yellow contours represent the 23th and the 20th magéarcsec-2 isophotes in the SDSS r-band image obtained from the datacube.
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