Free Access

Table 5

Comparison of exposure times for different H emission limits with VLT and E-ELT. We chose Gl 86 as an example candidate system.

Emission limit Exp. time VLT Exp. time E-ELT
[W] [min] [min]

1017 94 4
5 × 1016 370 16
1016 9300 390
1015 970 000 40 000

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.