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Fig. 5
As above (in the W, V, and Q bands) the 1σ (green lines), 2σ (brown lines), and 3σ (red lines) excess temperature contrast (in mk/pixel) curves along with the mean profile (pink line close) for 500 random control fields. The real temperature contrast profile in the M 31 halo up to 20° (with 1σ errors) is given in red.
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