Fig. A.2.
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Comparison between the original data cube, the PCA-enhanced cube, and the continuum-subtracted data cube. The left column displays the original data cube, the center column the PCA-enhanced cube, and the right column the continuum-subtracted cube. The top row of panels shows the 262.657 GHz channel corresponding to -179 km s−1 of the HCN (4-3) transition, adopting a redshift of 0.0129 for IC 860. The bottom row of panels shows the 262.285 GHz 246 km s−1 channel. The center image is given in weight and the other two panels in mJy beam−1.
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