Fig. 1
Overview of the observed sources in the H2CO, CH3OH, and c-C3H2 survey. The circles show the APEX beam size in the 1.4 mm window. Red circles denote Class 0/I objects and blue circles are flat-spectrum sources. CrA-46 is located ~40′ (~1.5 pc) west of the right edge of the plot. The inset shows a zoom-in of the region around R CrA enlarged by a factor ~2. The greyscale background is a Spitzer 4.5 μm image. (A colour version of this plot is available in the online Journal.)
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