Line ratio to Hα or Hβ maps for strong lines. Values are presented in linear scale. Contours correspond to 5.0×10-14, 8.0×10-15, 3.9× 10-16, and 1.3×10-16 erg cm-2 s-1 from the Hα flux map. To highlight the changes in the line ratios and mitigate outlier effects, the limits of the color scale are the 3% and 97% percentiles.
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.