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Fig. 32.

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H I moment-0 map of the newly discovered H I group at z = 0.040, which is in the foreground of the Abell 3365 cluster at z = 0.093. The colour scale has a linear stretch and is clipped outside of the range of 0 to 150 Jy beam−1 Hz. A conservative estimate is that this group has a total of 26 members within a radius of ∼2 Mpc and a velocity range of ΔV ∼ 1500 km s−1, with a mass range 8 ≲ log(MHI/M)≲10. The tapered beam is shown in the lower right corner and has a dimension of 30″ × 26″. The physical scale at the group redshift is indicated.

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