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Table 1

Core shift values relative to reference (highest-observed) frequency for different epochs.

Epoch νref 43 GHz 22 GHz 15 GHz 8 GHz 5 GHz
r PA r PA r PA r PA r PA
[yyyy-mm-dd] [GHz] [mas] [°] [mas] [°] [mas] [°] [mas] [°] [mas] [°]

2005-May-19 86 0.03 ± 0.04 6 0.10 ± 0.06 40 0.20 ± 0.08 103 0.32 ± 0.11 74 0.57 ± 0.16 90

Notes. The uncertainties presented here differ from the ones presented in Fromm et al. (Fromm et al. 2013b). Here we used a more conservative estimate for the uncertainties of the image alignment. The PAs are given in the definition of sky-plane (counter-clockwise from north) not in the mathematical definition as in Fromm et al. (2013b).

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