This article has an erratum: [https://doi.org/10.1051/0004-6361/201322612e]
CMB-subtracted Planck 28.4 GHz map covering the entire Galactic plane and latitudes | b | < 30°. The colour scale has a logarithmic stretch. Regions with the most significant AME are highlighted as thick squares while the rest of the sample are shown as circles. Regions with significant excess emission but with a potential UCH ii contribution () are shown as star symbols (see Sect. 4.2).
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