Table 3
The angular separations (sep) and position angles (PA) of the detected close companion-candidate relative to PZ Tel for all NACO observing epochs.
| Optics & epoch | sep [mas] | sepbg [mas] | sbg [σ] | sorb [σ] |
|
|
||||
| S27 2007/06/13 | 254.6 ± 2.5 | – | – | – |
| S13 2009/09/28 | 336.9 ± 1.5 | 373.8 ± 4.7 | 8 | 28 |
| S13 2010/05/05 | 356.3 ± 1.1 | 394.6 ± 5.3 | 7 | 37 |
| S13 2010/05/07 | 354.8 ± 1.3 | 395.4 ± 5.3 | 7 | 36 |
|
|
||||
| Optics & epoch | PA [°] | PAbg [°] | sbg [σ] | sorb [σ] |
| S27 2007/06/13 | 61.74 ± 0.58 | – | – | – |
| S13 2009/09/28 | 60.55 ± 0.22 | 34.77 ± 0.84 | 30 | 2 |
| S13 2010/05/05 | 60.47 ± 0.21 | 24.89 ± 0.89 | 39 | 2 |
| S13 2010/05/07 | 60.41 ± 0.21 | 24.88 ± 0.89 | 39 | 2 |
Notes. In the columns sepbg and PA bg, we show the expected separations and position angles in the case that the detected candidate is a non-moving background object. The significance level on which this background hypothesis can be rejected is listed in column sbg, and the one of detected orbital motion in column sorb.
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