Spatial distribution of NGC 2264 members, sorted into three mass groups: M⋆ ≤ 0.4 M⊙ (red dots); 0.4 M⊙<M⋆ ≤ 1.0 M⊙ (blue dots); M⋆> 1.0 M⊙ (yellow dots). The contours delimit the NGC 2264 subregions identified in Sung et al. (2009): Spokes (blue dotted line), Cone (C) (blue dashed line), Cone (H) (red dotted line), S Mon (red dashed line), Halo (gray dashed line), and Field (area external to the gray contour). Only objects with a mass estimate from the procedure discussed in Sect. 4.2 are shown here.
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