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Fig. 4

image

a) Intensity map of the H 2 1–0 S(1) line in the inner 2 kpc of PKS B1718–649. The position angle of the radio source is shown in dashed green (PA = 135°). Intensity contours at 1.5, 3, 5, 7, 9, 12, and 15σ are shown in black, starting from 1.5σ = 2.5 × 10-17 erg s-1cm-2. The isophotes in grey show the distribution of the stellar component. b) Velocity field of the H 2 1–0 S(1) line with the contours of the intensity map overlaid. The position angle of the radio source is shown in black. Velocities are given relative to the systemic value, vsys = 4274 km s-1. The regions marked by crosses are those where we extracted the profiles of Fig. 5, (see the text for more details).

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