Fig. 16

Filaments of young stars in NGC2264: evidence that the filamentary structure of the gas clouds is inherited by the density distribution of young stars as shown by the green contours (tenth nearest neighbour density of cluster members catalogued by Sung et al. 2009). The violet line sketches mark these filaments of young stars. The hub has two centres of near-equal-intensity star formation with skewed evolutionary states. IRS1 is a ~10 M⊙ B2-type star well-known as Allen’s source, and sits above the cone nebula (a pillar irradiated by this star). IRS2 is the younger 150 L⊙ Class I type star surrounded by linearly aligned (in projection) young stars (Spokes cluster) detected at shorter than 70 μm. The YSOs in the Spokes-cluster display at least three distinct groups of radial velocities that may correspond to the filaments in which they formed. The colour-composite image is made by combining the images from the HOBYS survey (Motte et al. 2010), SPIRE 500 μm (red), PACS 70 μm (green), and MIPS 24 μm (blue) data.
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