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Table 2

Properties of observed clusters taken from Lada & Lada (2003) and Pfalzner (2009).

ID Age Mc reff

GGD 12–15a 4 73 0.615
NGC 2282b 5 170 0.8
NGC 2024c 0.3 180 0.44
IC 348d 1.3 + 1.6 160 0.5
L 1641-Ce 0.1 27 0.155
NGC 2068f 2 110 0.43
NGC 2071f 2 60 0.29
NGC 1333g 1 79 0.245
Mon R2h 0.8 340 0.925
ONC 1 1100 1.9
Cyg OB2i 1–4 4.4 5.2
NGC 6611i 1–5 4.4 5.9
NGC 2244i 1–3 3.9 5.6
IC 1805i 1–3 4.2 7.1
Ori Ibi 1.7 3.6 6.3
NGC 7380i 2 3.8 6.5
Ori Ici 4.6 3.8 12.5
Ori Iai 11.4 3.7 16.6
U Scoi 5–11 3.5 14.2
Lower Cen-Cruxi 11–12 3.3 15.0
Upper Cen-Lup2i 14–15 3.6 22.1
I Lac 2i 12–16 3.4 20.7

Notes. No errors are included in Table 2, because the embedded nature leads to intrinsically uncertainity in the mass estimate.

Reference. Cluster ages added from the following sources:

(a)

Maaskant et al. (2011);

(b)

Horner et al. (1997);

(c)

Eisner & Carpenter (2003);

(d)

Herbig (1998);

(e)

Allen & Davies (2008);

(f)

Flaherty & Muzerolle (2008);

(g)

Raga et al. (2013);

(h)

Andersen et al. (2006);

(i)

Pfalzner (2009, and references therein).

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