Table 2.
Ages of star clusters hosting Cepheid variables.
| Cluster | log(AgeP) | log(AgeB05) | log(AgeA16) | log(AgeDS2021) | log(AgeDS2021) | NF | N1O |
|---|---|---|---|---|---|---|---|
| canonical | noncanonical | ||||||
| (yr) | (yr) | (yr) | (yr) | (yr) | |||
| KMHK421 | 8.25 ± 0.08 | 7.97 ± 0.01 | 8.25 ± 0.007 | 7.96 ± 0.009 | 8.12 ± 0.008 | 2 | – |
| BSDL581 | 8.02 ± 0.06 | 7.65 | 7.98 | 7.64 | 7.83 | 1 | – |
| OGLE-CL LMC 113 | 7.93 ± 0.10 | 7.55 | 7.89 | 7.54 | 7.74 | 1 | – |
| NGC 1850 | 7.90 ± 0.20 (*) | 7.60 ± 0.16 | 7.94 ± 0.14 | 7.60 ± 0.16 | 7.79 ± 0.14 | 3 (a) | – |
| H88 165 | 7.80 ± 0.10 | 7.57 | 7.91 | 7.56 | 7.76 | 1 | – |
| NGC 1854 | 7.92 ± 0.08 | 7.74 ± 0.14 | 8.21 ± 0.34 | 7.86 ± 0.32 | 7.96 ± 0.19 | 1 | 1 |
| NGC 1866 | 8.22 ± 0.10 | 8.03 ± 0.03 | 8.31 ± 0.04 | 8.02 ± 0.03 | 8.15 ± 0.05 | 14 | 2 |
| NGC 1894 | 8.00 ± 0.10 | 7.78 | 8.09 | 7.77 | 7.95 | 1 | – |
| NGC 1903 | 7.98 ± 0.10 | 7.67 ± 0.09 | 8.02 ± 0.09 | 7.68 ± 0.10 | 7.91 ± 0.14 | 2 | 1 |
| OGLE-CL LMC 321 | 8.27 ± 0.13 | 7.97 ± 0.05 | 8.25 ± 0.05 | 7.96 ± 0.05 | 8.11 ± 0.05 | 2 | – |
| H88 283 | 8.18 ± 0.08 (*) | 7.60 | 8.34 | 7.99 | – | – | 1 |
| OGLE-CL LMC 407 | 8.09 ± 0.08 | 7.82 | 8.13 | 7.82 | 7.99 | 1 | – |
| OGLE-CL LMC 431 | 8.03 ± 0.10 | 7.68 ± 0.61 | 8.28 ± 0.14 | 7.97 ± 0.02 | 8.05 ± 0.09 | 1 | 1 |
| NGC 1950 | 8.00 ± 0.10 | 7.82 | 8.13 | 7.81 | 7.98 | 1 | – |
| NGC 1969 | 8.10 ± 0.05 | 7.93 | 8.22 | 7.92 | 8.08 | 1 | – |
| BSDL1759 | 8.06 ± 0.05 | 7.77 ± 0.05 | 8.08 ± 0.05 | 7.76 ± 0.05 | 7.93 ± 0.05 | 2 | – |
| NGC 1971 | 8.02 ± 0.10 | 7.93 | 8.14 | 7.80 | – | – | 1 |
| BSDL1821 | 7.92 ± 0.05 | 7.74 | 8.05 | 7.73 | 7.91 | 1 | – |
| NGC 1986 | 7.98 ± 0.12 | 7.57 ± 0.56 | 8.20 ± 0.07 | 7.88 ± 0.10 | 7.96 ± 0.21 | 1 | 1 |
| OGLE-CL LMC 512 | 8.14 ± 0.11 (*) | 7.90 ± 0.08 | 8.23 ± 0.11 | 7.90 ± 0.08 | 7.98 ± 0.04 | 1 | 1 |
| NGC 2016 | 8.19 ± 0.12 | 7.65 ± 0.42 | 8.23 ± 0.004 | 7.91 ± 0.04 | 7.99 ± 0.15 | 1 | 1 |
| BSDL2205 | 8.25 ± 0.10 | 7.96 | 8.24 | 7.95 | 8.11 | 1 | – |
| OGLE-CL LMC 585 | 8.10 ± 0.10 | 7.92 | 8.21 | 7.91 | 8.07 | 1 | – |
| OGLE-CL LMC 591 | 8.29 ± 0.10 | 8.05 ± 0.09 | 8.29 ± 0.04 | 7.98 ± 0.08 | 8.05 ± 0.19 | 1 (b) | – |
| NGC 2065 | 8.17 ± 0.10 | 7.86 ± 0.14 | 8.26 ± 0.09 | 7.95 ± 0.08 | 8.08 ± 0.08 | 7 (a) | 3 |
| NGC 2136 | 8.16 ± 0.12 | 7.82 ± 0.14 | 8.14 ± 0.13 | 7.81 ± 0.14 | 7.93 ± 0.12 | 2 (c) | 1 |
Notes. Cluster: name of the cluster; log(AgeP): logarithm of age derived from the Padova isochrones; log(AgeB05): logarithm of age derived from PA relation from Bono et al. (2005); log(AgeA16): from Anderson et al. (2016); log(AgeDS2021): from De Somma et al. (2021); NF, N1O: number of Cepheids used for calculation (fundamental and first-overtone modes, respectively). (*)Average age from multiple measurements (with maximum error) from Table A.1.
One of the Cepheids is classified as F/1O in the OGLE catalogs. Its average age is calculated from the average of the fundamental and first-overtone PA relations.
Cepheid classified as F/1O in OGLE catalogs. Its age was calculated from the average of the fundamental and first-overtone PA relations.
There are two additional Cepheids within the cluster radius, but they were rejected because Mucciarelli et al. (2012) mark them as field objects and their ages are noticeably younger than the three variables used for mean age calculation.
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