Fig. 2.
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Red-Green-Blue color composite of the field around DR 18 covered by our observations. The blue and green channels correspond respectively to the J (1.25 μm) and KS (2.16 μm) bands, generated from the new observations presented in this work. The red channel is the Spitzer image in the I2 (4.5 μm) IRAC band. The field covered is 24′7 × 25′3.
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