Table 2
Age estimates, reddening, distance to the Sun, and GES and Gaia membership studies from the literature for the 26 intermediate-age and old clusters in our sample.
| Cluster name | Age (Myr) | E(B–V)(a) (dex) | Distance (kpc) | References Ages | References Distance | GES and Gaia membership studies |
|---|---|---|---|---|---|---|
| NGC 6405 | 94 | 0.14 ± 0.04 | 0.46 | 1, 2, 3 | 2, 3, 4, 5 | 1, 3, 6 |
| Blanco 1 | 94 ± 5 (c) | −0.01 ± 0.03 | 0.23-0.24 | 1, 10, 15, 16, 17, 18, 53 | 17, 18 | 1, 18 |
| NGC 6067 | 120 | 0.34 ± 0.04 | 1.4-1.7 | 1, 7, 8, 9, 10, 11 | 4, 5 | 1, 6, 11 |
| NGC 6649 | 120 | 1.43 ± 0.05 | 1.8 ± 0.1 | 12, 13, 14 | 12, 14 | 1, 6 |
| NGC 2516 | 125-138 | 0.11 ± 0.03 | 0.41 | 1, 9, 19, 21, 22 | 22, 23, 24 | 1, 6, 20, 22, 25, 26, 27, 28 |
| NGC 6709 | 173 ± 34 (c) | 0.27 ± 0.02 | 1.1 | 1, 10, 15, 29 | 4, 29 | 1, 6 |
| NGC 6259 | 210 | 0.63 ± 0.09 | 1.9 | 1, 9, 30, 31 | 4, 29 | 1, 6 |
| NGC 6705 | 280 | 0.40 ± 0.06 | 1.88 | 1, 9, 10, 26, 27 | 4, 24 | 1, 6, 26, 27, 32, 33, 34(b) |
| Berkeley 30 | 300 | 0.51 ± 0.04 | 4.7-4.9 | 1, 4, 10, 30 | 4, 30 | 1, 6 |
| NGC 6281 | 314 | 0.18 ± 0.02 | 0.47-0.51 | 1, 24, 30, 36 | 4, 30, 36 | 1, 6 |
| NGC 3532 | 399 ± 5 (c) | 0.05 ± 0.02 | 0.48-0.49 | 1, 10, 15, 28, 35 | 4, 28 | 1, 6, 28, 36, 37 |
| NGC 4815 | 560 | 0.70 ± 0.07 | 2.40-2.90 | 1, 26, 27, 31, 37 | 24, 37 | 1, 6, 26, 27, 32, 33, 34, 37 |
| NGC 6633 | 575 | 0.15 ± 0.04 | 0.39 | 1, 26, 27, 31, 38 | 4, 24 | 1, 6, 20, 26, 27 |
| NGC 2477 | 700 | 0.31 | 1.4 | 39 | 3, 4, 6, 12, 39 | 6, 40 |
| Trumpler 23 | 800 | 0.68 ± 0.04 | 2.20 | 1, 26, 27, 31, 43 | 24, 43 | 1, 26, 27, 42 |
| Berkeley 81 | 860 ± 100 | 0.85 ± 0.04 | 3.00 | 1, 10, 26, 27, 31, 34, 45 | 24, 45 | 1, 6, 26, 27 |
| NGC 2355 | 900 | 0.13 ± 0.03 | 1.80 ± 0.07 | 1, 4, 10, 30 | 42 | 1, 6, |
| NGC 6802 | 900 | 0.79 ± 0.06 | 1.80 | 1, 10, 26, 27, 31, 44 | 24 | 1, 6, 26, 27, 44 |
| NGC 6005 | 973 ± 4 (c) | 0.49 ± 0.06 | 2.70 | 1, 15, 26, 27, 31 | 4, 24 | 1, 6, 26, 27 |
| Pismis 18 | 1200 ± 400 | +0.22 ± 0.04 | 2.20 | 27, 28, 31 | 24 | 1, 27, 28 |
| Melotte 71 | 1294 ± 89 (c) | 0.11 | 2.2-3.2 | 8, 15 | 4, 42 | 6 |
| Pismis 15 | 1300 | 0.56 ± 0.05 | 2.6-2.9 | 1, 4, 30 | 4, 30 | 1, 6 |
| Trumpler 20 | 1400 | 0.37 ± 0.03 | 3.00 | 1, 10, 26, 27, 41 | 24, 41 | 1, 6, 26, 27, 33, 41, 46 |
| Berkeley 44 | 1600 | 0.90 ± 0.07 | 1.80-3.10 | 1, 10, 26, 27, 31, 47 | 24, 47 | 1, 6, 26, 27 |
| NGC 2243 | 4000 ± 120 | 0.04 ± 0.04 | 4.50 | 1, 10, 27, 31, 48, 49, 50 | 24, 32, 49 | 1, 6, 27 |
| M67 | 4000-4500 | 0.059 | 0.90 | 21, 38, 51, 52 | 4, 12 | 40 |
Notes. (a)References for the E(B–V) reddening adopted from Jackson et al. (2022) for all clusters except for NGC 2477 Rain et al. (2021). (b)GES studies that reference the clusters and or study them without taking membership analysis primarily into account. (c)Updated cluster ages using Gaia data, as listed by Bossini et al. (2019).
References. For the cluster ages, reddening and distances shown here we chose the most recent or most robust estimates for each cluster. Several other studies are further cited here, and age estimates are additionally briefly discussed in the individual notes of Appendix A. (1) Jackson et al. (2022); (2) Kılıçoğlu et al. (2016); (3) Gao (2018); (4) Kharchenko et al. (2005); (5) Mel'nik & Dambis (2017); (6) Cantat-Gaudin et al. (2018); (7) Frinchaboy & Majewski (2008); (8) Netopil et al. (2016); (9) Randich et al. (2020); (10) Romano et al. (2021); (11) Rangwal et al. (2019); (12) Dib et al. (2018); (13) Liu & Pang (2019); (14) Alonso-Santiago et al. (2020); (15) Bossini et al. (2019); (16) Pang et al. (2021); (17) Gillen et al. (2020); (18) Zhang et al. (2020); (19) Binks et al. (2022); (20) Randich et al. (2018); (21) Dumont et al. (2021b); (22) Franciosini et al. (2022b); (23) Jeffries et al. (2001); (24) Dias et al. (2002); (25) Jackson et al. (2016); (26) Jacobson et al. (2016); (27) Magrini et al. (2017); (28) Fritzewski et al. (2019); (29) Vande Putte et al. (2010); (30) Sampedro et al. (2017); (31) Magrini et al. (2018); (32) Magrini et al. (2014); (33) Tautvaišienė et al. (2015); (34) Magrini et al. (2015); (35) Dobbie et al. (2012); (36) Fritzewski et al. (2021); (35) Hetem & Gregorio-Hetem (2019); (36) Joshi et al. (2016); (37) Friel et al. (2014); (38) Sestito & Randich (2005); (39) Rain et al. (2021); (40) Jadhav et al. (2021); (41) Donati et al. (2014b); (42) Buckner & Froebrich (2014); (43) Overbeek et al. (2017); (44) Tang et al. (2017); (45) Donati et al. (2014a); (46) Smiljanic et al. (2016); (47) Hayes & Friel (2014); (48) Heiter et al. (2014); (49) Jacobson et al. (2011); (50) Friel & Janes (1993); (51) Pallavicini et al. (2005); (52) Richer et al. (1998), (53) Jeffries et al. (2023).
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