Table 4
Frequency of companions (Comp.) for nearby open clusters.
| Cluster | Primaries | Comp. | Frequency |
|---|---|---|---|
| Ursa Major | 64 | 56 | 1.05 ± 0.14 |
| Ursa Major core | 13 | 17 | 1.55 ± 0.38 |
| Ursa Major tail | 51 | 39 | 0.93 ± 0.15 |
| Coma Berenices | 119 | 68 | 0.96 ± 0.12 |
| Coma Berenices core | 37 | 25 | 1.13 ± 0.22 |
| Coma Berenices tail | 82 | 44 | 0.89 ± 0.13 |
| Hyades | 169 | 133 | 0.90 ± 0.08 |
| Hyades core | 129 | 104 | 0.92 ± 0.09 |
| Hyades tail | 40 | 29 | 0.84 ± 0.16 |
| NYMGs | 280 | 221 | 0.98 ± 0.07 |
Notes. We reported the observed number of primaries and companions in the second and third column. Companions for which the probability that it might be an unrelated star in the cluster is higher than 50% were not considered. The frequencies have been corrected for incompleteness using the results of Section 6 (averaged over mass ratios q > 0.05). The last row reports the overall result for NYMGs from Gratton et al. (2024).
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.