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Fig. 3


Colourmagnitude diagrams of the infrared counterparts of the XMM-Newton sources. Left: WISE W2(4.6 μm) versus the colour index W1 (3.4 μm) − W3 (12 μm). Right: 2MASS K band versus the colour index JK. For the different source classes the same symbol types are used as in Fig. 2.

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