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Fig. 3.

image

Integrated H I absorption spectrum from the VLA. The spectrum has been shifted to the restframe of 3C 433 i.e. z = 0.1016 ± 0.0001. We see that the peak absorption is only ∼50 km s−1 blueshifted with respect to the systemic velocity of 3C 433. The VLA spectral cube has an RMS noise of 1.2 mJy beam−1 and a velocity resolution of 12.5 km s−1.

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