Table 3
Physical parameters of star-forming regions.
| Star-forming region | Distance | Extinction | Age | Cluster mass | Reference | |
| (kpc) | (mag) | (Myr) | (104M⊙) | |||
|
|
||||||
| W49 |
|
AKs ~ 3 | 1–2 | 5–7 | 1, 2, 3, 4 | |
| NGC 3603 | 6.0 ± 0.3 | AV ~ 4.5 | 1–2 | 1.3 ± 0.3 | 5, 6, 7, 8 | |
| W43 |
|
AV ~ 30 | 5–10 | – | 9, 10, 11 | |
| Westerlund 1 (Wd 1) | 4.0 ± 0.2 | AKs = 0.91 ± 0.05 | 3–6 | 5–15 | 7, 12, 13, 14, 15 | |
| Westerlund 2 (Wd 2) | 4.16 ± 0.33 | AV = 6.51 ± 0.38 | <3 | >0.7 | 16, 17 | |
| Carina Nebula complex (CNC) | 2.3 | AV = 3.5 | 2–8 | >10 | 18, 19 | |
| NGC 346 (in SMC) | 60.6 | –a | ~3 | 39 | 20, 21, 22 | |
Notes.
The extinction towards NGC 346 is very low due to its location in the SMC; it is spatially highly variable and mainly comes from the star-forming region itself.
Reference. (1) Kennicutt (1984); (2) Alves & Homeier (2003); (3) Homeier & Alves (2005); (4) Zhang et al. (2013); (5) Grabelsky et al. (1988); (6) Stolte et al. (2004); (7) Kudryavtseva et al. (2012); (8) Moffat et al. (1994); (9) Zhang et al. (2014); (10) Blum et al. (1999); (11) Bally et al. (2010); (12) Gennaro et al. (2011); (13) Clark et al. (2005); (14) Crowther et al. (2006); (15) Brandner et al. (2008) (16) Vargas Álvarez et al. (2013); (17) Ascenso et al. (2007a); (18) Preibisch et al. (2012); (19) Ascenso et al. (2007b); (20) Hilditch et al. (2005); (21) Bouret et al. (2003); (22) Sabbi et al. (2008).
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