Table 2
NACO astrometric measurements of β Pic b relative to β Pic
| UT date | Mode | Platescale | True northa | Rotator offsetb | Δα | Δδ | Separation | PA | |||
| Obs/Filter/Obj | (mas) | (deg) | (deg) | (mas) | (mas) | (mas) | (deg) | ||||
|
|
|||||||||||
| 10/11/03 | Field/L′/L27 | 27.11 ± 0.04 | 0.29 ± 0.07 | 0. | 233 ± 22 | 341 ± 22 | 413 ± 22 | 34.42 ± 3.52 | |||
| 25/10/09 | Field/L′/L27 | 27.11 ± 0.05 | −0.08 ± 0.10 | 0. | −153 ± 14 | −257 ± 14 | 299 ± 14 | 210.74 ± 2.89 | |||
| 29/12/09 | ADI/L′/L27 | 27.10 ± 0.04 | −0.06 ± 0.08 | 90.46 ± 0.10 | −163 ± 9 | −260 ± 8 | 306 ± 9 | 212.07 ± 1.71 | |||
| 10/04/10 | ADI/Ks/S27 | 27.01 ± 0.04 | −0.26 ± 0.09 | 90.46 ± 0.10 | −173 ± 7 | −300 ± 7 | 346 ± 7 | 209.93 ± 1.15 | |||
| 28/09/10 | ADI/L′/L27 | 27.11 ± 0.04 | −0.36 ± 0.11 | 90.47 ± 0.10 | −193 ± 11 | −331 ± 11 | 383 ± 11 | 210.28 ± 1.73 | |||
| 16/11/10 | ADI/Ks/S27 | 27.01 ± 0.05 | −0.25 ± 0.07 | 90.47 ± 0.10 | −207 ± 8 | −326 ± 10 | 387 ± 8 | 212.41 ± 1.35 | |||
| 17/11/10 | ADI/L′/S27 | 27.10 ± 0.04 | −0.25 ± 0.07 | 90.46 ± 0.10 | −209 ± 13 | −330 ± 14 | 390 ± 13 | 212.34 ± 2.13 | |||
| 01/02/11 | ADI/Ks/S27 | 27.01 ± 0.04 | −0.32 ± 0.10 | 90.46 ± 0.10 | −211 ± 9 | −350 ± 10 | 408 ± 9 | 211.13 ± 1.48 | |||
| 26/03/11 | ADI/Ks/S27 | 27.01 ± 0.04 | −0.35 ± 0.10 | 90.46 ± 0.10 | −214 ± 12 | −367 ± 14 | 426 ± 13 | 210.13 ± 1.81 | |||
Notes.
The orientation of true north is relative to the vertical of the detector, and is positive when lying to the east of the vertical.
The NACO rotator offset position was calibrated and linked to the ESO keyword ADA.PUPILPOS according to the formulae ROTOFF = 179.44 − ADA.PUPILPOS, using various astrometric binaries observed at various epochs between November and December 2010. A conservative error of 0.10 deg was considered for this calibration.
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.