Planck early results
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Upper panel: thermal dust emissivity (Iν/NH)ref from Table2. The dot curve shows a modified black-body at TD = 17.5K and β = 1.8 normalized at 857 GHz, for comparison. The various colours are for different instruments:IRAS(Yellow),DIRBE(light blue), Planck- HFI (red),WMAP(dark blue) and Planck- LFI(green). Lower panel: Offsets from Table2. The error bars are plotted at ± 3σ.

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