Free Access

Fig. 6

thumbnail

Example of the transformation from absorption to emission for metallic ion narrow absorption lines. The top two spectra, echelle data from Buil, have lower resolution than the subsequent NOT spectra. Note the change of the Sc II doublet, the 5684 Å line is not shown (see text).

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.