Table 1.
Parameters of the images and the Gaussian model components we fitted to the dual-frequency VLBA data of J1718+4239.
| ν | C | S | R | Φ | ϑ | Imax | rms | bmin | bmax | P.A. | TB | δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| (GHz) | (mJy) | (mas) | (deg) | (mas) | (mJy beam−1) | (μJy beam−1) | (mas) | (mas) | (°) | (1011 K) | ||
| 4.5 | c | 84.2 ± 4.5 | 0 | 0 | 0.18 ± 0.01 | 83.5 | 27 | 1.4 | 4.1 | 1.4 | 5.7 | 11.4 |
| j | 1.1 ± 0.4 | 1.48 ± 0.03 | 53.3 ± 0.8 | 0.71 ± 0.05 | ||||||||
| 6.7 | c | 92.6 ± 4.9 | 0 | 0 | 0.13 ± 0.01 | 91.7 | 31 | 0.9 | 2.7 | 2.0 | 5.9 | 11.8 |
| j | 1.0 ± 0.2 | 1.40 ± 0.14 | 52.4 ± 4.6 | 1.27 ± 0.28 |
Notes. Col. 1 lists the central frequency, Col. 2 the model component designation (c = core, and j = jet), Col. 3 the flux density, Col. 4 the radial distance from the core component, Col. 5 the component position angle with respect to the core, measured north through east, Col. 6 the circular Gaussian model component size (FWHM), Col. 7 the peak intensity, Col. 8 the image noise, Col. 9–11 the minor and major axis (FWHM) and the major axis position angle of the Gaussian restoring beam, Col. 12 the brightness temperature, and Col. 13 the Doppler factor calculated assuming Tb, int = 5 × 1010 K (Readhead 1994).
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