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Table 6
Number of X-ray sources as a function of age and mass ranges and their spatial distribution.
| XMMa | ROSAT/XMMb | ROSAT_addc | ROSAT_Totald | XMM+ROSAT_adde | Side of cloud | ||
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| Age | Eastf | Westg | |||||
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| 0.3–5 Myr | 93 (41%) | 20 (53%) | 12 (48%) | 32 (51%) | 105 | 81 (47%) | 24 (30%) |
| 5–10 Myr | 42 (19%) | 5 (13%) | 5 (20%) | 10 (16%) | 47 | 32 (19%) | 15 (19%) |
| 10–55 Myr | 90 (40%) | 13 (34%) | 8 (32%) | 21 (33%) | 98 | 58 (34%) | 40 (51%) |
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| Mass | |||||||
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| 0.5–1 M⊙ | 93 (41%) | 14 (37%) | 1 (4%) | 15 (24%) | 94 | 79 (46%) | 15 (19%) |
| 1–2 M⊙ | 89 (40%) | 17 (45%) | 14 (56%) | 31 (49%) | 103 | 58 (34%) | 45 (57%) |
| 2–9 M⊙ | 43 (19%) | 7 (18%) | 10 (40%) | 17 (27%) | 53 | 34 (20%) | 19 (24%) |
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