Table 2.
Survey details.
| Reference | Total num. of stars surveyed | Total num. of detected companions | Companion subsample |
|---|---|---|---|
| Delfosse et al. (1999) | 127 | 12 | 5 |
| Cortés-Contreras et al. (2017)(*) | 490 | 80 | 34 |
| Janson et al. (2012) | 701 | 219 | 117 |
| Ward-Duong et al. (2015) A | 232 | 65 | 25 |
| Ward-Duong et al. (2015) B | 232 | 65 | 16 |
Notes. This table summarizes each of the M dwarf surveys used in this study. The first column lists the total number of type M primary stars included in each survey. The second column is the number of companions detected by each survey. The third column is the number of companions remaining after the corrections described in Sect. 2.1 are made. The binary fraction estimates described in Table 1 can be found by dividing the fourth column of this table by the second. (*)We used the volume-limited sub-sample of Cortés-Contreras et al. (2017).
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.