Table 1
CHARA/VEGA observing log of 51 Oph.
| Continuum | Hα line | ||
|
|
|||
| Obs. time | Telescopes | Obs. time | Telescopes |
| (UTC) | (conf.) | (UTC) | (conf.) |
|
|
|||
| 2014-07-04 05:40 | E2-S2-W2 | – | – |
| 2014-07-04 06:15 | E2-S2-W2 | 2013-05-25 07:12 | E1-E2 |
| 2014-07-04 06:49 | E2-S2-W2 | 2013-07-28 03:39 | S1-S2 (1) |
| 2014-07-08 05:53 | E2-S2-W2 | 2013-07-28 05:43 | S1-S2 (2) |
| 2014-07-08 06:18 | E2-S2-W2 | 2014-05-02 10:04 | W1-W2 (1) |
| 2014-07-08 06:43 | E2-S2-W2 | 2014-05-02 10:47 | W1-W2 (2) |
Notes. For the continuum observations, the calibrators HD 150366 with the uniform disk angular diameter θUD = 0.28 ± 0.02 mas and θUD = 0.39 ± 0.03 mas for HD 163955 were used. For the observations in the Hα line, HD 170296 with θUD = 0.43 ± 0.03 mas was used. The predicted uniform disk angular diameter (in mas) in R band were derived from the JMMC SearchCal software (Bonneau et al. 2006).
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