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Home All issues Volume 672 (April 2023) A&A, 672 (2023) A130 Full HTML
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Table A.1.

Core-shift values per epoch and frequency pair.

Date Frequency pair R.A. (mas) Dec (mas) Absolute values (mas) Projected absolute values (mas)
2005-05-19a CX −0.15 ± 0.06 0.03 ± 0.07 0.15 ± 0.06 0.15 ± 0.06
XU −0.06 ± 0.02 −0.04 ± 0.02 0.07 ± 0.02 0.06 ± 0.03
UK −0.04 ± 0.01 0.04 ± 0.01 0.06 ± 0.01 0.05 ± 0.02
KQ −0.020 ± 0.005 −0.003 ± 0.005 0.020 ± 0.005 0.020 ± 0.005
CQ −0.27 ± 0.06 0.03 ± 0.07 0.27 ± 0.06 0.27 ± 0.06
2005-07-14a CX −0.42 ± 0.06 0.04 ± 0.07 0.42 ± 0.06 0.42 ± 0.06
XU −0.29 ± 0.03 0.10 ± 0.02 0.31 ± 0.03 0.30 ± 0.03
UK −0.04 ± 0.01 0.004 ± 0.009 0.04 ± 0.01 0.04 ± 0.01
KQ −0.020 ± 0.006 0.003 ± 0.005 0.020 ± 0.006 0.020 ± 0.006
CQ −0.77 ± 0.06 0.15 ± 0.07 0.78 ± 0.06 0.78 ± 0.06
2005-09-01a CX −0.41 ± 0.03 0.10 ± 0.03 0.42 ± 0.03 0.42 ± 0.03
XU −0.35 ± 0.02 0.06 ± 0.02 0.35 ± 0.02 0.35 ± 0.02
UK −0.06 ± 0.02 0.01 ± 0.01 0.06 ± 0.02 0.06 ± 0.02
KQ −0.02 ± 0.01 0.02 ± 0.01 0.02 ± 0.01 0.02 ± 0.01
CQ −0.84 ± 0.04 0.18 ± 0.04 0.86 ± 0.04 0.86 ± 0.04
2005-12-04b CX −0.34 ± 0.03 0.07 ± 0.03 0.35 ± 0.03 0.35 ± 0.03
XU −0.16 ± 0.02 0.01 ± 0.02 0.16 ± 0.02 0.16 ± 0.02
UK −0.09 ± 0.02 0.09 ± 0.01 0.13 ± 0.02 0.12 ± 0.02
KQ −0.02 ± 0.02 0.03 ± 0.01 0.03 ± 0.01 0.02 ± 0.02
CQ −0.62 ± 0.04 0.20 ± 0.04 0.65 ± 0.04 0.65 ± 0.04
2006-10-02b CX −0.23 ± 0.03 0.07 ± 0.03 0.24 ± 0.03 0.24 ± 0.03
XU −0.06 ± 0.02 −0.001 ± 0.017 0.06 ± 0.02 0.05 ± 0.02
UK −0.03 ± 0.01 0.02 ± 0.01 0.04 ± 0.01 0.04 ± 0.01
KQ −0.046 ± 0.005 0.007 ± 0.005 0.046 ± 0.005 0.046 ± 0.005
CQ −0.36 ± 0.03 0.09 ± 0.03 0.37 ± 0.03 0.37 ± 0.03
2006-12-04 CX −0.19 ± 0.03 0.09 ± 0.03 0.21 ± 0.03 0.21 ± 0.03
XU −0.11 ± 0.02 −0.01 ± 0.02 0.11 ± 0.02 0.10 ± 0.02
UK −0.05 ± 0.02 0.04 ± 0.02 0.06 ± 0.02 0.06 ± 0.02
KQ −0.021 ± 0.007 0.008 ± 0.006 0.02 ± 0.01 0.02 ± 0.01
CQ −0.36 ± 0.04 0.13 ± 0.04 0.38 ± 0.04 0.38 ± 0.04
2007-01-26b CX −0.11 ± 0.03 0.11 ± 0.03 0.15 ± 0.03 0.13 ± 0.03
XU −0.11 ± 0.02 −0.02 ± 0.02 0.12 ± 0.02 0.10 ± 0.02
UK −0.04 ± 0.01 0.01 ± 0.01 0.04 ± 0.01 0.04 ± 0.01
KQ −0.020 ± 0.005 −0.010 ± 0.005 0.022 ± 0.005 0.016 ± 0.005
CQ −0.28 ± 0.04 0.08 ± 0.03 0.29 ± 0.04 0.29 ± 0.04
2007-04-26b CX −0.09 ± 0.03 0.08 ± 0.03 0.12 ± 0.03 0.11 ± 0.04
XU −0.13 ± 0.02 −0.001 ± 0.014 0.13 ± 0.02 0.12 ± 0.02
UK −0.05 ± 0.01 0.02 ± 0.01 0.05 ± 0.01 0.05 ± 0.01
KQ −0.022 ± 0.007 0.006 ± 0.005 0.023 ± 0.007 0.023 ± 0.007
CQ −0.29 ± 0.04 0.10 ± 0.04 0.31 ± 0.04 0.31 ± 0.04
2007-06-16 CX −0.18 ± 0.03 0.08 ± 0.03 0.19 ± 0.03 0.19 ± 0.03
XU −0.16 ± 0.02 0.006 ± 0.015 0.16 ± 0.02 0.16 ± 0.02
UK −0.06 ± 0.01 0.02 ± 0.01 0.07 ± 0.01 0.07 ± 0.01
KQ −0.020 ± 0.005 0.007 ± 0.005 0.021 ± 0.005 0.021 ± 0.005
CQ −0.42 ± 0.04 0.11 ± 0.03 0.43 ± 0.04 0.43 ± 0.04
2007-07-25b CX −0.20 ± 0.03 0.03 ± 0.03 0.20 ± 0.03 0.20 ± 0.03
XU −0.16 ± 0.02 0.03 ± 0.02 0.16 ± 0.02 0.16 ± 0.02
UK −0.02 ± 0.01 −0.002 ± 0.008 0.02 ± 0.01 0.02 ± 0.01
KQ −0.04 ± 0.01 0.004 ± 0.011 0.04 ± 0.01 0.04 ± 0.01
CQ −0.42 ± 0.04 0.06 ± 0.03 0.42 ± 0.04 0.42 ± 0.04
2007-09-13b CX −0.31 ± 0.04 0.06 ± 0.04 0.32 ± 0.04 0.32 ± 0.04
XU −0.23 ± 0.02 0.04 ± 0.02 0.23 ± 0.02 0.23 ± 0.02
UK −0.04 ± 0.02 0.02 ± 0.02 0.04 ± 0.02 0.04 ± 0.02
KQ −0.08 ± 0.01 0.05 ± 0.01 0.09 ± 0.01 0.09 ± 0.01
CQ −0.66 ± 0.05 0.16 ± 0.04 0.68 ± 0.05 0.68 ± 0.05
2008-01-03b CX −0.92 ± 0.03 0.21 ± 0.04 0.94 ± 0.03 0.92 ± 0.04
XU −0.26 ± 0.02 0.18 ± 0.03 0.32 ± 0.02 0.32 ± 0.03
UK −0.13 ± 0.01 0.14 ± 0.02 0.19 ± 0.02 0.18 ± 0.01
KQ −0.15 ± 0.01 0.21 ± 0.02 0.26 ± 0.02 0.23 ± 0.01
CQ −1.47 ± 0.04 0.74 ± 0.05 1.64 ± 0.04 1.64 ± 0.05
2008-12-07 CXl −0.22 ± 0.03 −0.01 ± 0.03 0.22 ± 0.03 0.22 ± 0.03
XlXh −0.05 ± 0.03 0.007 ± 0.026 0.05 ± 0.03 0.05 ± 0.03
XhU −0.02 ± 0.03 −0.05 ± 0.02 0.05 ± 0.02 0.02 ± 0.03
UKl −0.11 ± 0.01 0.05 ± 0.02 0.12 ± 0.01 0.10 ± 0.01
KlKh −0.02 ± 0.01 0.001 ± 0.010 0.02 ± 0.01 0.02 ± 0.01
KhQ −0.05 ± 0.01 0.007 ± 0.008 0.05 ± 0.01 0.05 ± 0.01
CQ −0.46 ± 0.05 0.002 ± 0.046 0.46 ± 0.05 0.46 ± 0.05
2009-09-22 CX −0.10 ± 0.03 −0.03 ± 0.05 0.10 ± 0.04 0.09 ± 0.03
XU −0.09 ± 0.02 −0.02 ± 0.02 0.09 ± 0.02 0.08 ± 0.02
UK −0.11 ± 0.01 0.09 ± 0.01 0.14 ± 0.01 0.13 ± 0.02
KQ −0.005 ± 0.011 0.029 ± 0.007 0.029 ± 0.007 0.01 ± 0.01
CQ −0.30 ± 0.04 0.07 ± 0.05 0.31 ± 0.04 0.31 ± 0.04
2009-10-22 CX −0.34 ± 0.04 0.13 ± 0.06 0.37 ± 0.04 0.35 ± 0.04
XU −0.13 ± 0.02 −0.05 ± 0.02 0.13 ± 0.02 0.12 ± 0.02
UK −0.16 ± 0.02 0.01 ± 0.02 0.16 ± 0.02 0.16 ± 0.02
KQ −0.06 ± 0.02 −0.04 ± 0.01 0.07 ± 0.02 0.06 ± 0.02
CQ −0.69 ± 0.05 0.05 ± 0.06 0.69 ± 0.05 0.69 ± 0.05
2009-12-03 CX −0.13 ± 0.03 −0.05 ± 0.03 0.14 ± 0.03 0.14 ± 0.03
XU −0.13 ± 0.02 −0.02 ± 0.02 0.13 ± 0.02 0.13 ± 0.02
UK −0.07 ± 0.02 0.05 ± 0.01 0.08 ± 0.02 0.07 ± 0.02
KQ −0.120 ± 0.007 −0.007 ± 0.018 0.120 ± 0.007 0.120 ± 0.007
CQ −0.45 ± 0.03 −0.04 ± 0.04 0.45 ± 0.03 0.45 ± 0.04
2010-01-18b CX −0.25 ± 0.03 −0.08 ± 0.03 0.26 ± 0.03 0.25 ± 0.03
XU −0.06 ± 0.02 −0.02 ± 0.02 0.06 ± 0.02 0.06 ± 0.02
UK −0.11 ± 0.02 0.021 ± 0.009 0.11 ± 0.02 0.10 ± 0.02
KQ −0.07 ± 0.01 0.032 ± 0.007 0.08 ± 0.01 0.07 ± 0.01
CQ −0.48 ± 0.04 −0.04 ± 0.03 0.49 ± 0.04 0.49 ± 0.04
2010-02-21b CX −0.21 ± 0.03 −0.09 ± 0.03 0.23 ± 0.03 0.22 ± 0.03
XU −0.09 ± 0.02 −0.02 ± 0.01 0.09 ± 0.02 0.09 ± 0.02
UK −0.075 ± 0.008 0.05 ± 0.01 0.09 ± 0.01 0.07 ± 0.01
KQ −0.060 ± 0.007 0.025 ± 0.007 0.065 ± 0.007 0.058 ± 0.007
CQ −0.44 ± 0.03 −0.04 ± 0.03 0.44 ± 0.03 0.44 ± 0.03

Notes. the nuclear region at the Q band can be model fitted by two components where a bright moving feature has been identified at all epochs in the period 2009-2010.

a

The nuclear region at both C and X bands can be fitted with two components.

b

Only the C band can be fitted with two components.

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