Table A.1
Observations of reference stars carried out with SPHERE/IRDIS.
| Target | Observation date | Filter (a) | NDIT × DIT (b) | ⟨ω⟩ (c) | ⟨X⟩ (d) | ⟨τ0⟩ (e) |
|---|---|---|---|---|---|---|
| (2MASS ID) | (yyyy-mm-dd) | (1 × s) | (′′) | (ms) | ||
| J11272881-3952572 | 2017-04-18 | H | 4 × 32 | 1.51 | 1.10 | 1.40 |
| J11320835-5803199 | 2017-06-17 | H | 4 × 32 | 0.67 | 1.47 | 2.90 |
| J11445217-6438548 | 2018-05-14 | H | 4 × 32 | 0.73 | 1.31 | 2.38 |
| J11445217-6438548 | 2018-05-14 | Ks | 4 × 32 | 0.78 | 1.31 | 2.60 |
| J12065276-5044463 | 2017-04-02 | H | 3 × 32 | 1.24 | 1.12 | 1.50 |
| J12090225-5120410 | 2018-05-15 | H | 4 × 32 | 0.86 | 1.12 | 2.70 |
| J12090225-5120410 | 2018-05-15 | Ks | 4 × 32 | 0.70 | 1.12 | 2.90 |
| J12101065-4855476 | 2017-04-18 | H | 4 × 32 | 1.71 | 1.15 | 1.40 |
| J12123577-5520273 | 2017-06-17 | H | 4 × 32 | 0.77 | 2.41 | 2.80 |
| J12185802-5737191 | 2017-06-17 | H | 2 × 32 | 0.72 | 1.22 | 2.70 |
| J12220430-4841248 | 2017-04-18 | H | 3 × 32 | 1.82 | 1.17 | 1.40 |
| J12234012-5616325 | 2017-06-17 | H | 4 × 32 | 0.63 | 1.73 | 3.45 |
| J12393796-5731406 | 2017-06-17 | H | 4 × 32 | 0.64 | 1.77 | 3.83 |
| J12404664-5211046 | 2018-04-30 | H | 4 × 32 | 0.75 | 1.13 | 7.05 |
| J12404664-5211046 | 2018-04-30 | Ks | 4 × 32 | 0.87 | 1.13 | 7.10 |
| J12454884-5410583 | 2018-04-30 | H | 4 × 32 | 0.71 | 1.15 | 6.93 |
| J12454884-5410583 | 2018-04-30 | Ks | 4 × 32 | 0.66 | 1.15 | 8.98 |
| J12480778-4439167 | 2017-06-17 | H | 4 × 32 | 0.90 | 1.34 | 2.75 |
| J13055087-5304181 | 2018-07-04 | H | 4 × 32 | 0.82 | 1.14 | 1.95 |
| J13055087-5304181 | 2018-07-04 | Ks | 4 × 32 | 0.93 | 1.14 | 2.03 |
| J13064012-5159386 | 2018-04-30 | H | 4 × 32 | 0.56 | 1.13 | 8.15 |
| J13064012-5159386 | 2018-04-30 | Ks | 4 × 32 | 0.56 | 1.13 | 9.88 |
| J13065439-4541313 | 2018-04-08 | H | 4 × 32 | 0.46 | 1.09 | 5.65 |
| J13065439-4541313 | 2018-04-08 | Ks | 4 × 32 | 0.55 | 1.09 | 4.68 |
| J13095880-4527388 | 2018-05-01 | H | 4 × 32 | 1.08 | 1.07 | 2.70 |
| J13095880-4527388 | 2018-05-01 | Ks | 4 × 32 | 1.03 | 1.07 | 2.45 |
| J13103245-4817036 | 2018-05-01 | H | 4 × 32 | 1.03 | 1.10 | 3.30 |
| J13103245-4817036 | 2018-05-01 | Ks | 4 × 32 | 0.87 | 1.10 | 4.40 |
| J13121764-5508258 | 2018-05-15 | H | 4 × 32 | 0.62 | 1.16 | 2.50 |
| J13121764-5508258 | 2018-05-15 | Ks | 4 × 32 | 0.62 | 1.16 | 3.00 |
| J13174687-4456534 | 2018-05-28 | H | 4 × 32 | 0.70 | 1.07 | 4.33 |
| J13174687-4456534 | 2018-05-28 | Ks | 4 × 32 | 0.67 | 1.07 | 4.15 |
| J13233587-4718467 | 2017-04-02 | H | 4 × 32 | 1.68 | 1.21 | 1.40 |
| J13334410-6359345 | 2017-07-05 | H | 4 × 32 | 1.06 | 1.53 | 3.05 |
| J13354082-4818124 | 2017-04-02 | H | 4 × 32 | 1.06 | 1.30 | 2.08 |
| J13380596-4344564 | 2017-04-02 | H | 4 × 32 | 1.05 | 1.33 | 2.40 |
| J13455599-5222255 | 2018-04-28 | H | 4 × 32 | 0.64 | 1.13 | 6.35 |
| J13455599-5222255 | 2018-04-28 | Ks | 4 × 32 | 0.65 | 1.13 | 6.03 |
Notes. All data were obtained in classical imaging mode. (a)A broadband filter in either H or Ks band was applied. (b)NDIT describes the number of dithering positions and DIT is the detector integration time per dithering position. (c) ⟨ω⟩ denotes the average seeing conditions during the observation. (d) ⟨X⟩ denotes the average airmass during the observation. (e) ⟨τ0⟩ denotes the average coherence time during the observation.
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