Open Access
Table 1.
AMBER, PIONIER, GRAVITY and MATISSE interferometric observations of Achernar. Nλ is the number of spectral channels.
| Date | Nobs | Band | Nλ | VLTI |
|---|---|---|---|---|
| configuration | ||||
| AMBER | ||||
| 2008-11-03 | 16 | H + K | 38 | D0-G1-H0 |
| 2008-11-07 | 32 | H + K | 38 | A0-D0-H0 |
| 2008-11-09 | 22 | H + K | 38 | E0-G0-H0 |
| 2008-11-13 | 30 | H + K | 38 | A0-G1-K0 |
| PIONIER | ||||
| 2016-10-12 | 4 | H | 6 | A0-B2-C1-D0 |
| 2016-10-13 | 4 | H | 6 | A0-B2-C1-D0 |
| 2016-11-11 | 2 | H | 6 | A0-B2-C1-D0 |
| 2016-11-12 | 2 | H | 6 | A0-B2-C1-D0 |
| GRAVITY | ||||
| 2016-11-15 | 6 | K | 1742 | A0-B2-C1-D0 |
| 2016-11-21 | 6 | K | 1742 | A0-B2-C1-D0 |
| 2016-11-22 | 3 | K | 1742 | A0-B2-C1-D0 |
| 2018-12-25 | 2 | K | 1742 | A0-B2-C1-D0 |
| MATISSE | ||||
| 2019-09-20 | L | 118 | A0-B2-C1-D0 | |
| 2019-09-21 | L | 118 | A0-B2-C1-D0 | |
| 2019-09-25 | L | 118 | A0-B2-C1-D0 | |
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