Table C.1
Observation log of the GRAVITY follow-up.
| Target Name | Date | Start time (UT) | End time (UT) | Nexp / NDIT / DIT (s) | airmass | τ0 (ms) | seeing | (ΔRA, ΔDec)Fibre (mas, mas) |
|---|---|---|---|---|---|---|---|---|
| G ...6464 | 2022-11-09 | 01:56:47 | 02:57:59 | 16 / 4 / 30 | 1.82 | 0.006 | 0.560 | (28, 53) |
| G ...0976 | 2022-11-10 | 01:49:26 | 02:22:20 | 8 / 4 / 30 | 1.05 | 0.006 | 0.685 | (38, −60) |
| CD-50 869 | 2022-07-22 | 08:55:04 | 09:56:35 | 8 / 32 / 10 | 1.24 | 0.002 | 1.288 | (50, −25) |
| HD 17155 | 2022-07-22 | 07:31:51 | 08:29:51 | 8 / 32 / 10 | 1.44 | 0.002 | 1.26 | (55, −15) |
| 2022-08-19 | 08:42:32 | 09:38:51 | 8 / 32 / 10 | 1.08 | 0.013 | 0.586 | (54, 7) | |
| WT 766 | 2022-08-18 | 04:34:07 | 05:00:46 | 4 / 12 / 30 | 1.12 | 0.003 | 1.23 | (−70, −60) |
| G ...3872 | 2023-07-03 | 08:47:12 | 09:56:39 | 8 / 4 / 100 | 1.40 | 0.005 | 0.625 | (65, −55) |
| 2023-10-27 | 06:12:01 | 06:47:37 | 4 / 8 / 30 | 1.27 | 0.002 | 1.176 | (59, −28) | |
| G ...1920 | 2023-07-31 | 09:17:12 | 10:30:54 | 8 / 4 / 100 | 1.14 | 0.003 | 0.749 | (44, 73) |
| StKM1-1494 | 2023-05-08 | 06:11:37 | 07:19:57 | 8 / 4 / 100 | 1.06 | 0.002 | 0.976 | (−54, 58) |
Notes. Nexp denotes the number of exposures. NDIT is the number of detector integrations per exposure, while DIT is the detector integration time. The atmospheric coherence time during the observation is given by τ0. (ΔRA, ΔDec)Fibre describes the placement of the fibre centre relative to the host star.
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