Table 7
Date of observation, separation, position angle, astrometric errors, and flux ratio of the observed binaries.
| Star | Date of observation | Sep.(mas) | PA (°) | a(mas) | b(mas) | θ(°) | F (comp) / F ⋆ |
|
|
|||||||
| WW Cha | 2012-07-02 | 4.73 | -140 | 0.57 | 0.35 | 22 | 0.62 |
| 2012-03-06 | 6.18 | -48.8 | 0.98 | 0.40 | 117 | 0.62 | |
| 2011-02-10 | 6.44 | 173.4 | 0.50 | 0.18 | 150 | 0.62 | |
| V1000 Sco | 2012-07-17 | 4.33 | 105.7 | 0.40 | 0.19 | 164 | 0.34 |
| 2012-08-19 | - - - - - - - - - - multiple local minima - - - - - - - - - - | ||||||
| TWA 3A | 2011-02-09 | 3.51 | 108.1 | 0.57 | 0.43 | 1 | 0.76 |
|
|
|||||||
Notes. The astrometric errors are the semi major axis a, the semi minor axis b, and the orientation of the error ellipse, θ, around the best fit position of the companion. The flux ratio of TWA 3A is poorly constrained by the observations.
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