Table 7
RMS level of systematic errors in the quasar and LMC samples at different angular scales for EDR3 and (in brackets) DR2.
Sample | Angular | Parallax | Proper motion | |||||
---|---|---|---|---|---|---|---|---|
scales | [μas] | [μas yr−1] | ||||||
QSO | >10° | 8.1 | (11.3) | 7.7 | (17.7) | |||
QSO | >7° | 8.7 | (12.6) | 8.8 | (20.1) | |||
QSO | >5° | 9.4 | (13.6) | 9.6 | (22.6) | |||
QSO | >3° | 10.6 | (14.8) | 10.8 | (24.>7) | |||
QSO | >2° | 11.6 | (15.5) | 11.6 | (26.3) | |||
QSO | >1° | 13.5 | (16.9) | 12.8 | (26.0) | |||
QSO | >0.5° | 14.3 | (23.2) | 17.2 | (23.2) | |||
LMC | 0.1−4.5° | 6.9 | (13.1) |
Notes. The lower limit in the second column is the standard deviation of the Gaussian smoothing kernel; the upper limit (for LMC) is the diameter of the area examined. Columns 3 and 4 give unbiased estimates of the RMS variations of the systematics,computed as described in the text. In brackets are the corresponding estimates for DR2, using as far as possible the same samples. For the proper motion, the values refer to a single component (the mean of the RMS in μα* and μδ ).
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