Table 1
Number of observed stars (Nobj) of our original list of 29 open clusters and total number of HARPS observations (Nobs) carried out by our and other programs for each cluster.
| Cluster | Nobj | Nobs | Cluster | Nobj | Nobs |
|---|---|---|---|---|---|
| IC 2714 | 8 | 217 | NGC 2972 | 2 | 7 |
| IC 4651 | 13 | 150 | NGC 3114 | 7 | 89 |
| IC 4756 | 13 | 52 | NGC 3532 | 6 | 45 |
| Melotte 71 | 6 | 11 | NGC 3680 | 6 | 32 |
| NGC 1662 | 2 | 4 | NGC 3960 | 3 | 6 |
| NGC 2204 | 8 | 20 | NGC 4349 | 3 | 98 |
| NGC 2251 | 3 | 3 | NGC 5822 | 11 | 96 |
| NGC 2324 | 3 | 3 | NGC 6067 | 3 | 13 |
| NGC 2345 | 4 | 8 | NGC 6134 | 9 | 14 |
| NGC 2354 | 8 | 22 | NGC 6208 | 2 | 6 |
| NGC 2355 | 1 | 1 | NGC 6281 | 2 | 7 |
| NGC 2477 | 10 | 24 | NGC 6425 | 2 | 6 |
| NGC 2506 | 6 | 8 | NGC 6494 | 2 | 8 |
| NGC 2818 | 3 | 8 | NGC 6633 | 4 | 22 |
| NGC 2925 | 2 | 14 |
Notes. Total of 994 observations of 152 stars from which we selected our final sample of 826 effective observations of 114 stars, as described in Sect. 2.2.
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