Table 1
A list of stellar age t, photometric mass Mphot, and effective radius reff of bound star clusters, of age t ≲ 100 Myr (young) and photometric mass Mphot ≳ 104M⊙ (massive), observed in the Milky Way Galaxy, the Local Group galaxies, and other external galaxies.
| Galaxy name | Cluster name | Age t (Myr) | log 10(Mphot/M⊙) | reff (pc) |
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| Milky Way | Arches | 2.00 (+ 2.00) | 4.30 | 0.40 |
| Milky Way | DSB2003 | 3.50 | 3.80 | 1.20 |
| Milky Way | NGC 3603 | 2.00 (− 1.00) | 4.10 | 0.70 |
| Milky Way | Quintuplet | 4.00 | 4.00 | 2.00 |
| Milky Way | RSGC01 | 12.00 | 4.50 | 1.50 |
| Milky Way | RSGC02 | 17.00 | 4.60 | 2.70 |
| Milky Way | RSGC03 | 18.00 | 4.50 | 5.00 |
| Milky Way | Trumpler14 | 2.00 | 4.00 | 0.50 |
| Milky Way | Wd1 | 3.50 | 4.50 | 1.00 |
| Milky Way | Wd2 | 2.00 | 4.00 | 0.80 |
| Milky Way | hPer | 12.80 | 4.20 | 2.10 |
| Milky Way | XPer | 12.80 | 4.10 | 2.50 |
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| LMC | R136 | 3.0 | 4.78 | 1.70 |
| LMC | NGC 1818 | 25.1 | 4.42 | 5.39 |
| LMC | NGC 1847 | 26.3 | 4.44 | 32.58 |
| LMC | NGC 1850 | 31.6 | 4.86 | 11.25 |
| LMC | NGC 2004 | 20.0 | 4.36 | 5.27 |
| LMC | NGC 2100 | 15.8 | 4.36 | 4.41 |
| LMC | NGC 2136 | 100.0 | 4.30 | 3.42 |
| LMC | NGC 2157 | 39.8 | 4.31 | 5.39 |
| LMC | NGC 2164 | 50.1 | 4.18 | 4.76 |
| LMC | NGC 2214 | 39.8 | 4.03 | 8.13 |
| LMC | NGC 1711 | 50.1 | 4.24 | 5.19 |
| M31 | KW246 | 75.9 | 4.19 | 3.20 |
| M31 | B257D | 79.4 | 4.45 | 15.14 |
| M31 | B318 | 70.8 | 4.38 | 6.61 |
| M31 | B327 | 50.1 | 4.38 | 4.47 |
| M31 | B448 | 79.4 | 4.58 | 16.22 |
| M31 | Vdb0 | 25.1 | 4.85 | 7.40 |
| M31 | KW 044 | 58.9 | 4.59 | 10.00 |
| M31 | KW 120 | 87.1 | 4.57 | 2.60 |
| M31 | KW 208 | 56.2 | 4.01 | 2.90 |
| M31 | KW 272 | 53.7 | 4.50 | 9.00 |
| M31 | B015D | 70.8 | 4.76 | 16.60 |
| M31 | B040 | 79.4 | 4.50 | 12.88 |
| M31 | B043 | 79.4 | 4.43 | 3.98 |
| M31 | B066 | 70.8 | 4.25 | 6.76 |
| NGC 6822 | HubbleIV | 25.1 | 4.00 | 2.00 |
| SMC | NGC 330 | 25.1 | 4.56 | 6.11 |
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| ESO338IG | 23 | 7.08 | 6.70 | 5.20 |
| M51 | 3cl-a | 15.85 | 5.04 | 5.20 |
| M51 | 3cl-b | 5.01 | 5.91 | 2.30 |
| M51 | a1 | 5.01 | 5.47 | 4.20 |
| M82 | MGG9 | 9.55 | 5.92 | 2.60 |
| M82 | A1 | 6.31 | 5.82 | 3.00 |
| M82 | F | 60.26 | 6.70 | 2.80 |
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| NGC 1140 | 1 | 5.01 | 6.04 | 8.00 |
| NGC 1487 | 2 | 8.51 | 5.20 | 1.20 |
| NGC 1487 | 1 | 8.32 | 5.18 | 2.30 |
| NGC 1487 | 3 | 8.51 | 4.88 | 2.10 |
| NGC 1569 | A | 12.02 | 6.20 | 2.30 |
| NGC 1569 | C | 3.02 | 5.16 | 2.90 |
| NGC 1569 | B | 19.95 | 5.74 | 2.10 |
| NGC 1569 | 30 | 91.20 | 5.55 | 2.50 |
| NGC 1705 | 1 | 15.85 | 5.90 | 1.60 |
| NGC 4038 | S2-1 | 8.91 | 5.47 | 3.70 |
| NGC 4038 | W99-1 | 8.13 | 5.86 | 3.60 |
| NGC 4038 | W99-16 | 10.00 | 5.46 | 6.00 |
| NGC 4038 | W99-2 | 6.61 | 6.42 | 8.00 |
| NGC 4038 | W99-15 | 8.71 | 5.70 | 1.40 |
| NGC 4038 | S1-1 | 7.94 | 5.85 | 3.60 |
| NGC 4038 | S1-2 | 8.32 | 5.70 | 3.60 |
| NGC 4038 | S1-5 | 8.51 | 5.48 | 0.90 |
| NGC 4038 | 2000-1 | 8.51 | 6.23 | 3.60 |
| NGC 4038 | S2-2 | 8.91 | 5.60 | 2.50 |
| NGC 4038 | S2-3 | 8.91 | 5.38 | 3.00 |
| NGC 4449 | N-1 | 10.96 | 6.57 | 16.90 |
| NGC 4449 | N-2 | 3.02 | 5.00 | 5.80 |
| NGC 5236 | 805 | 12.59 | 5.29 | 2.80 |
| NGC 5236 | 502 | 100.00 | 5.65 | 7.60 |
| NGC 5253 | I | 11.48 | 5.38 | 4.00 |
| NGC 5253 | VI | 10.96 | 4.93 | 3.10 |
| NGC 6946 | 1447 | 11.22 | 5.64 | 10.00 |
Notes. This list is compiled from Portegies Zwart et al. (2010; see their Tables 2−4) where the references for the data of the individual clusters are given. All these stellar systems are ≳ 10 times older than their present dynamical crossing time, τcr, which is a phenomenological criterion to identify them as gravitationally bound objects (see Portegies Zwart et al. 2010).
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