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Fig. 8


Herschel-SPIRE colour–colour diagram of IN sources (black dots) on top of redshifted blackbodies. Left: colour codes redshift. Right: colour codes dust temperature in kelvin. Although there is a degeneracy between redshift and temperature, the colours suggest a range of z ~ 1.5–3 for the SPIRE sources corresponding to the Planck IN regions. The upper right symbol gives the typical (median) error bars of the measured points. See Sect. 4.3 for details.

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