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Table 1
Parameters for the IRAM PdBI observations.
| Parameter | Value |
|
|
|
| Pointing center | RA (J2000) = 18h10m28 24 |
Dec (J2000) = −19°22′30 5 |
|
| Number of antennas | 6 |
| Baseline range | 24–176 m |
| Band center | 96.64 and 241.81 GHz |
| Primary HPBW | 52″ at 96.64 GHz |
| 21″ at 241.81 GHz | |
| Synthesised HPBW |  at 96.64 GHz |
 at 241.81 GHz |
|
| Primary flux density calibrator: | 1.17 Jy at 96.64 GHz |
| MWC 349 | 2.03 Jy at 241.81 GHz |
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