Fig. 6
Proplyds from the Kastner et al. (2005) catalog with X-ray counterparts. The gray scale is the 2MASS image at K band, and the dashed contours denote the CN N = 1–0 emission from the OMC (Rodríguez-Franco et al. 1998). Left: stars with measured values of the hydrogen column density of log NH < 22.0 cm-2. Right: stars with measured values of the hydrogen column density of log NH > 22.0 cm-2.
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