Table 1.
VLTI/PIONIER observation log of our targets and the resulting uniform disc angular diameters.
| Object | Configuration | First Science | Last Science | UD | χ2 |
|---|---|---|---|---|---|
| Observation | Observation | (mas) | |||
| V1044 Cen | Extended | 2025-01-02T07:53:50 | 2025-01-02T08:12:34 | 0.550 ± 0.005 | 0.35 |
| 2025-01-07T07:27:23 | 2025-01-07T07:43:02 | 0.557 ± 0.011 | 0.63 | ||
| combined | 0.552 ± 0.005 | 0.50 | |||
| V417 CMa | Extended | 2024-11-28T03:34:52 | 2024-11-28T04:30:36 | 0.589 ± 0.005 | 0.79 |
| SY Mus | Extended | 2025-01-08T05:07:48 | 2025-01-08T06:47:53 | 0.719 ± 0.005 | 0.46 |
| V420 Hya | Extended | 2025-01-04T07:18:07 | 2025-01-04T07:33:10 | 0.864 ± 0.011 | 1.81 |
| V648 Car | Large | 2024-12-24T06:01:28 | 2024-12-24T06:18:55 | 0.906 ± 0.010 | 1.06 |
| 2024-12-26T04:01:35 | 2024-12-26T04:16:38 | 0.915 ± 0.006 | 0.87 | ||
| combined | 0.910 ± 0.005 | 0.97 | |||
| Hen 3-461 | Large | 2024-12-24T06:47:18 | 2024-12-24T07:03:38 | 1.100 ± 0.004 | 0.43 |
| ZZ CMi | Large | 2024-12-23T07:15:23 | 2024-12-23T08:19:33 | 1.642 ± 0.009 | 3.82 |
Notes. The errors were estimated from bootstrapping. We also indicate when the first and last science observations on a given night were obtained. When data were obtained on more than one night, we also compute the UD for the combined data.
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