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Fig. 1

image

Planck field toward the M 33 galaxy in the 70 GHz band. The pixel color gives the temperature excess in μK with respect to the mean CMB temperature. The optical extension of the M 33 galaxy is indicated by the inner ellipse with major and minor axes of 60′ and 35′, respectively. The four quadrants A1–A4 are used in our analysis.

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