Table 6
Summary of the characteristics of the multi-epoch observations for several stars in our sample.
| Star | Epoch | Instrument | Time int. | Pixel size | Limiting | |||||
| displacement, | ||||||||||
| yr | mas | velocity | ||||||||
|
|
||||||||||
| Pistol Star | 1a*-2a | NICMOS-NACO | 12.76 | 13−50 | 50 mas | |||||
| and | 2a-3a | NACO-NACO | 1.08 | 150 km s-1 | ||||||
| WR102e | 1a-3a | NICMOS-NACO | 13.84 | |||||||
| HD 168625 | 1b-2b | HST/WF-WF | 0.19 | 27−50 | 50 mas | |||||
| 2b-3b | WF-NICMOS | 1.07 | 40 km s-1 | |||||||
| 3b-4b | NICMOS-NACO | 12.88 | at 2.2 kpc | |||||||
| 1b-4b | WF-NACO | 14.14 | ||||||||
| MWC930 | 1c-2c | HST/ACS**NACO | 5.15 | 25−27 | 27 mas, 80 km s-1 | |||||
Notes. The epochs in MJD and the civil date are provided at the bottom of the table. Epochs “a”: 1a = 50705.41-14/09/1997, 2a = 55364.23-17/06/2010, 3a = 55760.05-18/07/2011. Epochs “b”: 1b = 50597.59-29/05/1997, 2b = 50666.80-06/08/1997, 3b = 51056.06-31/08/1998, 4b = 55761.17-19/07/2011. Epochs “c”: 1c = 53880.35-25/05/2006, 2c = 55761.06-19/07/2011.
Epoch 1a from Figer et al. (1998),
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