Fig. 3
Number of cells versus the number of stars located inside the cell, considering 15′′ × 15′′ (0.03 pc × 0.03 pc) cells centered on each COUP X-ray star. Different colors and dashed lines show different extinction ranges. The densest cells (i.e., cells with the highest number of X-ray stars) are located in the OHC, OMC1-S, the TC core and the TC envelope (see text).
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