Table 4
Exoplanet frequency and metallicity in the vicinity of open clusters.
| Name | r1 | l1 | Nst1 | Npl1 | fpl1 | [Fe/H]1 | Nst2 | Npl2 | fpl2 | [Fe/H]2 |
|---|---|---|---|---|---|---|---|---|---|---|
| NGC 6811 | 20 | 60 | 656 | 22 | 0.034 ± 0.007 | − 0.127 ± 0.009 | 1890 | 52 | 0.028 ± 0.004 | − 0.151 ± 0.005 |
| NGC 6819 | 20 | 200 | 57 | 0 | 0 | − 0.505 ± 0.093 | 226 | 2 | 0.009 ± 0.006 | − 0.273 ± 0.047 |
| NGC 6866 | 20 | 100 | 240 | 5 | 0.021 ± 0.009 | − 0.167 ± 0.015 | 402 | 9 | 0.022 ± 0.004 | − 0.192 ± 0.011 |
Notes. Close vicinity of the cluster is represented by the inner shell/cylinder with the size r1, l1 in pc. It is compared to a more distant outer shell which is two times bigger. Nst1, Nst2, Npl1, Npl2, are the number of Kepler target stars and exoplanet candidates within the inner and outer shells, respectively. fpl1, fpl2 are the relative exoplanet frequencies in the inner and outer shells, respectively. [Fe/H]1, [Fe/H]2 are the metallicities of the inner and outer shells, respectively.
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