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Table 7.
Properties of different HII regions and their massive stellar content.
| HII region | Field | Molecular mass (a) | Stellar mass | SFE | Most massive star | Massive stars |
|---|---|---|---|---|---|---|
| (M⊙) | (M⊙) | % | # | |||
| Total | 1.4 × 106 (b) | ∼4 × 104 | 3 | 57: ∼120 M⊙ | ||
| G49.58–00.38 | I | – (c) | 3100 (d) | – | LS1: ∼ 25 M⊙ | LS1 |
| G49.5–0.4 | II | 8.7 × 104 | 17600 (d) | 17 | 57: ∼120 M⊙ | 3, 6, 7, 12, 13, 16, 50, 57, 61, W51d |
| G49.2–0.3 | III | 3.8 × 104 | 8000 (e) | 17 | 2: ∼68 M⊙ | 2, 4, 5, 10, 14, 15 |
| G48.9–0.3 | IV | 1.9 × 104 | 10000 (e) | 35 | 1: ∼50 M⊙ | 1, 8, 9, 11 |
Notes. (a)Kang et al. (2010), (b) Carpenter & Sanders (1998), (c)G49.58–00.38 is part of the G49.5–0.4 complex. (d)Okumura et al. (2000), (e)Nanda Kumar et al. (2004).
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