Table 1
Comparison of weak lensing data and performance.
| HAWK-I+LBC analysis | S18-like ACS analysis (with full-depth colour selection) | |
|---|---|---|
| Shapes from (total duration) | VLT/HAWK-I Ks ( ≃7 h) | HST/ACS F606W 2 × 2 mosaic (4 orbits ≃6.3 h) |
| For colours (total duration) | LBT/LBC g + z ( ≃2 h) | HST/ACS F814W mosaic (≃6.3 h) or 8m-class i band (≃2 h)1 |
| Useful field of view | ≃7′× 7′ | ≃6.′5 × 6.′5 |
| PSF FWHM | ≃0.′′35 | ≃0.′′1 |
| ngal∕arcmin-2 | 9.8 (for zl ≤ 1.1) | 18.1 (for zl ≤ 1.0)2 |
| ⟨β⟩(zl = 0.7) | 0.481 | 0.466 |
| σϵ,eff | 0.259 | 0.322 |
| f∕arcmin-1(zl = 0.7) | 5.82 | 6.15 |
Notes. (1) This corresponds to the F814W/i-band imaging that would be needed to apply the colour selection for the full depth of the shape catalogue to reach the source density ngal . (2) S18 reach this average source density for a colour selection including F814W imaging and clusters at zl ≤ 1.0. At higher cluster redshifts a more stringent colour selection reduces the source density.
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.