Table 2.
Derived quantities for J2209+6442.
| (1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) | (10) | (11) | (12) | (13) | (14) | (15) | (16) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Epochs | Frequency | Component | Flux | Error | Flux | Error | FWHM | Error | log(Tb, obs/K) | Error | SB | Error | Distance | Error | Spectral Index |
| [GHz] | [mJy] | [mJy] | Ratio | [mas] | [mas] | Ratio | [mas] | [mas] | |||||||
| 2016-07-24 | 4.3 | A | 22.6 | 3.2 | 1.21 | 0.18 | 1.14 | 0.09 | 9.10 | 0.09 | 0.99 | 0.27 | 18.80 | 0.34 | −1.38 |
| – | – | B | 18.6 | 2.8 | – | – | 1.03 | 0.09 | 9.11 | 0.10 | – | – | – | – | −0.31 |
| 2016-07-24 | 7.6 | A | 10.4 | 2.1 | 0.66 | 0.15 | 1.09 | 0.16 | 8.32 | 0.15 | 0.05 | 0.02 | 19.19 | 0.35 | – |
| – | – | B | 15.6 | 2.7 | – | – | 0.28 | 0.03 | 9.66 | 0.11 | – | – | – | – | – |
| 2021-03-04 | 4.9 | A | 23.8 | 2.9 | 1.04 | 0.11 | 1.03 | 0.06 | 9.11 | 0.07 | 0.50 | 0.09 | 18.71 | 0.19 | −1.60 |
| – | – | B | 23.0 | 2.8 | – | – | 0.71 | 0.04 | 9.41 | 0.07 | – | – | – | – | −0.57 |
| 2021-03-10 | 22.2 | A | 2.1 | 0.8 | 0.22 | 0.09 | 0.24 | 0.07 | 8.02 | 0.30 | 0.11 | 0.08 | 19.47 | 0.15 | – |
| – | – | B | 9.7 | 1.8 | – | – | 0.17 | 0.02 | 8.98 | 0.13 | – | – | – | – | – |
Notes. Columns designate the (1): observation epoch; (2): observing frequency in GHz; (3): studied component (A and B denote the sum over all components in a region); (4): total flux in a component based on the Gaussian model-fit in mJy; (5): respective uncertainty; (6): calculated flux ratio (FR) between components. If multiple components are in one region, we also list the FR of the brightest component over the whole of the other region for comparison; (7): respective uncertainty; (8): FWHM of Gaussian component from model-fitting in mas. If multiple components comprise one region, this is left out; (9): respective uncertainty; (10): observed surface brightness expressed as the logarithm of the brightness temperature (Eq. (14)); (11): respective uncertainty; (12): calculated surface brightness ratio (SBR). Again, if multiple components are in one region, we also list the SBR of the brightest component over the whole of the other region for comparison; (13): respective uncertainty; (14): distance calculated between the brightest components in regions A and B in mas; (15): respective uncertainty; (16): spectral index calculated between the total flux densities of the two regions.
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