Table 2
Properties of identified compact features, labelled as in Fig. 2.
| Label in Fig. 2: | A | B | C | D | E | F | G | H |
|
|
||||||||
| Measured peak values | ||||||||
| RA 12h26m54s._ | 6126 ± 3 | 6145 ± 3 | 6126 ± 3 | 6153 ± 3 | 6087 ± 3 | 6185 ± 3 | 6210 ± 3 | 6107 ± 3 |
| Dec − 00°52′39′′._ | 372 ± 4 | 404 ± 4 | 411 ± 4 | 350 ± 4 | 456 ± 4 | 417 ± 4 | 420 ± 4 | 332 ± 4 |
| Brightness [mJy/b] | 1.50 ± 0.24 | 1.30 ± 0.21 | 1.10 ± 0.20 | 1.00 ± 0.17 | 0.70 ± 0.14 | 0.60 ± 0.13 | 0.50 ± 0.12 | 0.70 ± 0.14 |
|
|
||||||||
| Fitted peak values | ||||||||
| RA 12h26m54s._ | 6125 ± 3 | 6147 ± 3 | 6126 ± 3 | 6153 ± 3 | 6080 ± 3 | 6187 ± 3 | 6209 ± 3 | 6105 ± 3 |
| Dec − 00°52′39′′._ | 371 ± 4 | 404 ± 4 | 410 ± 4 | 349 ± 4 | 455 ± 4 | 415 ± 4 | 417 ± 4 | 328 ± 4 |
| Brightness [mJy/b] | 1.54 ± 0.24 | 1.15 ± 0.19 | 0.99 ± 0.17 | 0.97 ± 0.66 | 0.51 ± 0.11 | 0.67 ± 0.13 | 0.55 ± 0.12 | 0.68 ± 0.13 |
|
|
||||||||
| Fitted integrated values | ||||||||
| SI [mJy] | 6.99 ± 1.11 | 2.17 ± 0.36 | 2.98 ± 0.51 | 2.01 ± 0.34 | 3.73 ± 0.81 | 0.954 ± 0.182 | 0.871 ± 0.182 | 1.92 ± 0.36 |
| θM [mas] | 37.8 ± 1.1 | 17.9 ± 1.7 | 33.2 ± 1.8 | 20.2 ± 2.0 | 49.0 ± 2.5 | 0.0 | 0.0 | 29.3 ± 2.4 |
| θm [mas] | 27.0 ± 1.0 | 15.0 ± 2.2 | 15.0 ± 2.4 | 14.5 ± 3.0 | 39.0 ± 3.5 | 0.0 | 0.0 | 17.8 ± 3.5 |
| Pos. angle [°] | 108 ± 179 | 160 ± 178 | 76.5 ± 2.7 | 81 ± 20 | 4.5 ± 1.8 | – | – | 147 ± 178 |
|
|
||||||||
| Derived values | ||||||||
| Size [pc] | 6.2 × 4.5 | 3.0 × 2.5 | 5.5 × 2.5 | 3.3 × 2.4 | 8.1 × 6.4 | <3.4 × 2.4 | <3.4 × 2.4 | 4.8 × 2.9 |
| Tb [ log 10 [ K ] ] | 5.35 | 5.42 | 5.29 | 5.35 | 4.8 | >5.01 | >4.97 | 5.08 |
Notes. Positions are given in the J2000 reference frame. Uncertainties in positions due to the Gaussian fitting are small compared to the 4 mas estimated in Sect. 3.3. Uncertaintiesof fitted peak brightness and integrated flux densities include both estimates of uncertainties from calibration/imaging and from the Gaussian fitting as 
. Uncertainties for fitted sizes and position angles are given as reported by IMFIT in CASA 3.4, i.e. without accounting for possible calibration/imaging errors. F and G were fitted as point sources so the PSF of 20.6×14.8 mas was used as an upper size limit. The brightness temperature at 5.0 GHz was calculated from the fitted integrated flux density SI assuming a uniform elliptical source component with FWHM fitted angular diameters θM,θm and integrated flux density SI using Eq. (5) by Condon et al. (1991): Tb = (c2SI/ 2kν2)·(8ln(2) / 3πθMθm).
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