Table 1
Parameters of VLBI observations using the JVN for Cep A.
| Epoch | Date and time | Telescopesa | t on | 1σ | Synthesized beam | N spot | |
|
|
|||||||
| θmaj × θmin | PA | ||||||
| (yyyy/mm/dd, UT) | (h) | (Jy beam-1) | (mas×mas) | (°) | |||
|
|
|||||||
| 1 | 2006/09/09, 14:30−22:00 | YM, UD, MZ, IG | 2.8 | 0.06 | 9.4×4.3 | −70 | 84 |
| 2 | 2007/07/28, 14:00−22:00 | YM, UD, MZ, IR, IG | 2.1 | 0.09 | 9.2×4.3 | −43 | 92 |
| 3 | 2008/10/25, 10:00−18:00 | YM, MZ, IR, OG, IG | 1.6 | 0.12 | 7.0×3.9 | −79 | 60 |
Notes. Column 1: epoch number; Col. 2: observational year/month/day, and universal time; Col. 3: telescopes used; Col. 4: total on-source time; Col. 5: image rms noise in a line-free channel; Cols. 6, 7: FWHM of major and minor axes, and position angle of synthesized beam made with natural weighting; Col. 8: number of detected maser spots.
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