Table 1
VLT/SPHERE Polarimetrie imaging data and corresponding observing conditions.
| Epochs | Filters | Catg. | nDIT × DIT | ncyc | seeing [″] | τ0 [ms] | FWHM [mas] | Label |
|---|---|---|---|---|---|---|---|---|
| Feb. 02, 2023 | V | Object | 10 × 5 s | 8 | 0.51–0.77 | 7.8–11.0 | 26.3 | V |
| I′ | Object | 12 × 2 s | 8 | 0.54–0.72 | 6.2–9.1 | 26.5 | I | |
| Mar. 02, 2023 | J + ND_1.0 | Object | 20 × 0.8375 s | 8 | 0.44–1.26 | 4.5–9.8 | 47.1 | J |
| Ks + ND_1.0 | Object | 20 × 0.8375 s | 8 | 0.48–0.95 | 5.4–11.7 | 63.4 | K | |
| Mar. 03, 2023 | V | Object | 6 × 10 s | 9 | 0.54–1.20 | 3.4–8.7 | V-hop | |
| V | Object | 2 × 5s | 3 | 0.81–0.94 | 4.5–5.7 | 24.5 | ||
| V | Referencea | 6 × 10 s | 3 | 0.81–1.02 | 3.7–5.9 | |||
| Jun. 09, 2022c | Ks + N_ALC_Ks | Object | 1 × 32s | 23b | 0.60–1.09 | 5.3–11.3 | K-hop | |
| Ks + ND_2.0 | Flux | 5 × 2s | 2 | 0.70–0.74 | 6.4–8.0 | 68.8 | ||
| Ks + N_ALC_Ks | Referencea | 1 × 32s | 6 | 0.66–1.07 | 4.2–9.2 |
Notes. Here, nDIT × DIT gives the exposure time for one out of four half-wave plates settings for a polarimetric cycle. Thus the total integration time for one polarimetric instrument setting is nDIT × DIT × 4 × ncyc. (a)The reference stars are HD 101582 for V-hop and HD 100541 for K-hop sequences. (b)Two cycles are discarded.(c)Archival and published in Ren et al. (2023).
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