Fig. 1.

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Example SoFiA data products for NGC 1622; a spiral galaxy previously detected in H I located at about 381 kpc southeast from the group centre. From top-left to bottom-right panel: Signal-to-noise ratio of each individual pixels; column density map and R-band DeCaLS DR10 (Dey et al. 2019) optical image – the contour levels are (5.70 × 1018, 1.140 × 1019, 2.28 × 1019, 4.56 × 1019, 9.12 × 1019, 1.82 × 1020, 3.65 × 1020, 7.30 × 1020) cm−2; first moment map (velocity field); second moment map; major axis position velocity diagram; minor axis position velocity diagram; an example channel map; and integrated spectrum from a data cube where the noise has been masked. The ellipse at the bottom left corner of each plot shows the beam, 43.8″ × 47.5″.
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