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Table 1
Stellar multiplicity fractions.
| Reference | Investigated | d lim | Multiplicity | Projected physical | Survey |
| spectral type | [pc] | fraction [%] | separation, s [au] | methoda | |
|
|
|||||
| Duquennoy & Mayor (1991) | F7−G9 | 22 | ~65 | ~0.01−225 | RV, WI |
| Raghavan et al. (2010) | ~F6−K3 | 25 | 44 ± 3 | ~0.005−100 000 | RV, AO, S, WI |
| Reid & Gizis (1997) | K2−M6 | 8 | 32 | ~0.1−1800 | RV, S, WI |
| Leinert et al. (1997) | M0−M6 | 5 | 26 ± 9 | ~1−100 | S |
| Fischer & Marcy (1992) | M | 20 | 42 ± 9 | 0−10 000 | RV, WI |
| Jódar et al. (2013) | K5-M4 | 25 | 20.3 |
~0−80 | LI |
| Ward-Duong et al. (2015) | K7−M6 | 15 | 23.5 ± 3.2 | ~3−10 000 | AO, WI |
| Bergfors et al. (2010) | M0.0−M6.0 | 52 | 32 ± 6 | 3−180 | LI |
| Janson et al. (2012) | M0.0−M5.0 | 52 | 27 ± 3 | 3−227 | LI |
| Law et al. (2008) | M4.5−M6.0 | ⟨15.4⟩ | 13.6 |
~0−80 | LI |
| Siegler et al. (2005) | M6.0−M7.5 | 30 | 9 |
 3 |
AO |
| Janson et al. (2014a) | M5.0−M8.0 | 36 | 21−27 | ~0.5−100 | LI |
| Close et al. (2003) | M8.0−L0.5 | 33 | 15 ± 7 | <15 | AO |
| Bouy et al. (2003) | M7.0−L8.0 | 20 | 10−15 | 1−8 | HST |
| Reid et al. (2008) | L | 20 | 12.5 |
<3 | HST |
| Burgasser et al. (2003) | T | ⟨10⟩ | 9 |
1−5 | HST |
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