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Table 3

Distribution of Class II and Class III objects of different ages in the various subregions of the NGC 2264 cluster.

Myr Class II Class III
tot Spokes Cone (C) Cone (H) S Mon Halo Field tot Spokes Cone (C) Cone (H) S Mon Halo Field
(%) (%) (%) (%) (%) (%) (%) (%) (%) (%) (%) (%)

<1 8 25.0 50.0    0.0 25.0    0.0    0.0 10    0.0 30.0 20.0 30.0 20.0    0.0
1–2 39 15.4 23.1    7.7 33.3 15.4    5.1 55    1.8 10.9 16.4 32.7 32.7    5.5
2–3 24    8.3 20.8 16.7 50.0    4.2    0.0 29    6.9    3.4    0.0 27.6 41.4 20.7
3–4 19    5.3 10.5 15.8 21.1 42.1    5.3 34    2.9    8.8    8.8 26.5 35.3 17.6
4–6 13    0.0    7.7 23.1    7.7 38.5 23.1 49    4.1 10.2 10.2 20.4 42.9 12.2
6–8 14    7.1    7.1    7.1 35.7 14.3 28.6 41    0.0    7.3    4.9 24.4 39.0 24.4
>8 21    4.8 14.3 23.8 14.3 23.8 19.0 35    5.7 17.1 14.3 31.4 25.7    5.7

Notes. The total number of objects in a given age bin is reported in the “tot” column; the following columns indicate what percentage of Class II/Class III objects in the corresponding age bin is contained in each of the six subregions illustrated in Fig. 10 (the values sum up to 100% horizontally).

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