Table 1
Summary of the SPHERE-ZIMPOL observations of W Hya.
| # | t obs | DIT | NDIT | N exp | N pol | N dither | Filter | Seeing | AM | Strehl | Strehl |
| (UTC) | (s) | (cam1/cam2) | (′′) | (H) | (visible) | ||||||
|
|
|||||||||||
| W Hya: 2016 March 23 (UTC) | |||||||||||
| 1 | 03:58:46 | 20 | 6 | 1 | 1 | 3 | CntHa/NHa | 0.73 | 1.16 | 0.86 | 0.38 |
| 2 | 04:29:04 | 3 | 4 | 1 | 8 | 3 | TiO717/Cnt748 | 0.74 | 1.09 | 0.86 | 0.46 |
| 3 | 05:05:18 | 1 | 12 | 1 | 6 | 3 | Cnt820/Cnt820 | 0.77 | 1.04 | 0.85 | 0.52 |
|
|
|||||||||||
| HIP 67834: 2016 March 23 (UTC) | |||||||||||
| C1 | 07:10:37 | 10 | 10 | 1 | 1 | 3 | CntHa/NHa | 0.63 | 1.02 | 0.74 | 0.25 |
| C2 | 07:35:09 | 5 | 2 | 1 | 4 | 3 | TiO717/Cnt748 | 0.54 | 1.04 | 0.77 | 0.36 |
| C3 | 07:49:30 | 2 | 6 | 1 | 5 | 3 | Cnt820/Cnt820 | 0.69 | 1.07 | 0.73 | 0.38 |
Notes. DIT: detector integration time. NDIT: number of frames. Nexp: number of exposures of each polarization component in each polarization cycle at each dithering position. Npol: number of polarization cycles at each dithering position. Ndither: number of dithering positions. Seeing was measured in the visible. AM: airmass. The Strehl ratios in the visible are computed from the H-band Strehl ratios for W Hya, while they were measured from the observed ZIMPOL images for HIP 67834.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.