Table A.1
Observation log used for V Hya.
| Date | Time [UT] | VLTI config. | Object | Seeing [″] | τ0 [ms] | FT |
|---|---|---|---|---|---|---|
| 2022-02-25 | 04:22:16 | A0-G1-J2-K0 | HD 98993 | 0.55 | 15.33 | 1 |
| 04:44:46 | V Hya | 0.55 | 19.49 | 0.98 | ||
| 04:58:09 | α Hya | 0.53 | 16.38 | 1 | ||
| 2022-02-27 | 06:43:12 | A0-G1-J2-K0 | HD 98993 | 0.41 | 11.98 | 1 |
| 07:05:36 | V Hya | 0.35 | 12.10 | 0.99 | ||
| 07:27:56 | ϵ Crv | 0.40 | 15.08 | 1 | ||
| 2022-02-28 | 05:21:38 | A0-G1-J2-J3 | HD 98993 | 0.55 | 8.02 | 1 |
| 05:43:24 | V Hya | 0.67 | 5.41 | 1 | ||
| 05:56:18 | α Hya | 0.61 | 6.45 | 1 | ||
| 2022-03-02 | 07:23:51 | A0-G1-J2-J3 | HD 98993 | 0.43 | 14.07 | 1 |
| 07:48:21 | V Hya | 0.58 | 12.24 | 1 | ||
| 08:02:42 | ϵ Crv | 0.54 | 13.09 | 1 | ||
| 2022-03-07 | 04:47:02 | K0-G1-D0-J3 | HD 98993 | 0.43 | 10.28 | 1 |
| 05:06:53 | V Hya | 0.37 | 11.23 | 0.98 | ||
| 05:23:09 | α Hya | 0.33 | 9.56 | 1 | ||
| 05:45:10 | HD 98993 | 0.28 | 10.63 | 1 | ||
| 06:04:02 | V Hya | 0.31 | 8.60 | 1 | ||
| 06:18:17 | α Hya | 0.30 | 13.54 | 1 | ||
| 2022-03-10 | 05:05:15 | K0-G2-D0-J3 | HD 98993 | 0.77 | 5.35 | 1 |
| 05:16:55 | V Hya | 0.66 | 7.23 | 1 | ||
| 05:45:46 | ϵ Crv | 0.45 | 12.58 | 1 | ||
| 2022-03-11 | 07:02:41 | A0-B2-D0-J3 | HD 98993 | 0.45 | 7.15 | 1 |
| 07:22:25 | V Hya | 0.49 | 6.92 | 0.99 | ||
| 07:46:13 | ϵ Crv | 0.38 | 7.93 | 1 | ||
| 2022-03-12 | 00:40:55 | A0-B2-D0-C1 | V Hya | 1.26 | 3.00 | 1 |
| 01:01:58 | α Hya | 1.25 | 2.32 | 1 | ||
| 00:53:11 | α Hya | 1.26 | 2.08 | 1 | ||
| 01:22:22 | V Hya | 1.11 | 2.47 | 1 | ||
| 01:47:04 | α Hya | 1.05 | 3.18 | 1 | ||
| 01:37:11 | α Hya | 1.02 | 3.23 | 1 | ||
| 02:54:09 | V Hya | 0.85 | 3.32 | 1 | ||
| 03:15:15 | α Hya | 0.82 | 4.41 | 1 | ||
| 03:09:03 | α Hya | 0.83 | 3.32 | 1 | ||
| 03:39:05 | V Hya | 0.84 | 5.47 | 1 | ||
| 04:00:56 | α Hya | 0.83 | 5.62 | 1 | ||
| 04:16:50 | V Hya | 0.93 | 4.44 | 1 | ||
| 04:58:25 | α Hya | 0.92 | 4.47 | 1 | ||
| 2022-04-12 | 00:41:38 | A0-G1-J2-K0 | HD 98993 | 0.88 | 2.96 | 1 |
| 01:01:04 | V Hya | 0.89 | 3.53 | 0.98 | ||
| 01:23:31 | ϵ Crv | 0.63 | 4.30 | 1 | ||
| 2022-04-30 | 01:52:21 | A0-B2-D0-C1 | α Hya | 1.32 | 4.55 | 1 |
| 02:11:33 | V Hya | 0.91 | 8.83 | 1 | ||
| 2022-05-30 | 00:55:00 | K0-G2-D0-J3 | HD 98993 | 0.77 | 3.33 | 1 |
| 01:16:24 | V Hya | 0.66 | 3.81 | 1 | ||
| 01:36:40 | ϵ Crv | 0.79 | 3.28 | 1 |
Notes. The column labelled “VLTI config.” refers to the AT stations, τ0 is the coherence time in the visible and FT refers to the fringe tracking ratio, a FITS keyword providing the percentage of fringes tracked by the MATISSE master-band (L band in the specific case) during the observations. The latter is an indicator of the data quality.
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