Table 3
Distribution of clumps and YSOs in NGC 2264 and its subregions.
| Region | Clumps | YSOs | |||||||
|---|---|---|---|---|---|---|---|---|---|
| name | Total(a),(b) | Bound(b),(c) | Unbound (b),(c) |  |
Q (d) |  (d) |
Total (e) | Class 0/I | Class II |
| NGC 2264 | 256/100% | 92/36% | 164 | ~1.4 pc−2 | ≃0.7 | 7.8 | 485/100% | 87 | 398 |
| Northern | 74/29% | 21/28% | 53 | ~1.2 pc−2 | ≃0.8 | ≃1 | 156/32% | 10 | 146 |
| Central | 97(96)/38% | 48/50% | 49(48) | ~2.4 pc−2 | ≃0.8 | 3.7 | 302/62% | 69 | 233 |
| Southern | 85(76)/33% | 23(22)/27% | 62(54) | ~0.9 pc−2 | ≃ 0.6 | ≃1 | 27/6% | 8 | 19 |
Notes. (a) Number of clumps in each subregions and their corresponding fraction of the total population. (b) The number of clumps in the area where YSOs have been detected is given in parentheses. (c) Gravitationally bound clumps havea αBE < 2 parameter in Table 1. The fraction of bound clumps in the subregion population is indicated. (d) The clustering Q parameter is calculated from Eq. (8). The median mass segregation ratios, 
, measured for the NMST = 4–15 most massive clumps are estimated from Fig. 11. (e) Total number of Class 0/I and Class II YSOs in each subregions and their corresponding fraction of the total population.
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