Fig. B.2.
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Brightness distribution in the line Hα along the slit and the cuts, adopted to extract individual spectra of the W and E regions. The estimated FWHM sizes are ∼2.0, 3.7 and 3.4 arcsec for the reference star, and for W and E components, respectively. After correcting for the seeing of 1.5 arcsec, their intrinsic FWHMs are ∼3.0 and 3.4 arcsec.
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