Fig. 6.
CO and Brackett γ equivalent widths for all stars. Stars with early-type lines are confirmed with visual inspection of the spectra. In the top panel the stars with an S/N < 20 are shown; in the bottom panel the stars with an S/N > 20 are shown. This S/N is the approximately border of the nearly complete regime of spectral classification. The lines divide absorption (negative) and emission.
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.