Free Access
Fig. A.2

Relationship between the uncertainty on the Balmer decrement σ [C(Hβ) and the Hα and Hβ signal-to-noise. The horizontal dashed line shows the σ [C(Hβ)] = 0.1 limit adopted in this work to identify good quality objects (black symobls) from uncertain measurements (red symbols).
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.