Decomposition of the H2 1–0 S(1) emission in IRAS 22491-1808. Left: flux of the narrow (A) and broad (B) component of the H2 emission. Right: velocity map of the narrow (C) and broad (D) component of the H2 emission in the region where the corresponding flux is ≥2.2 × 10-18 erg s-1 cm-2 spaxel-1 for the narrow and ≥0.4 × 10-18 erg s-1 cm-2 spaxel-1 for the broad component. The dark contours visualize an image taken with HST/NICMOS in the combined F220M+F160W+F110W filters (Scoville et al. 2000). HST contours start at ~5σ, and are drawn at 7, 11, 21, 32, 53, 85, 150% of the peak intensity of the E galaxy, which is the galaxy that shows the broad-component emission.
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