Free Access

Fig. 2.

image

SFR vs. M plane for our DR7 SDSS galaxies, colour-coded by the percentage of objects showing a Na I D excess (NaDobs > NaDmod) in each bin, from the Na I D measurements of the MPA-JHU catalogue; only object with S/N >  2 in the single observed Na I D Lick measurements were included. The Na I D excess objects dominate the high-M region, while the number of the Na I D deficiency (NaDobs < NaDmod) objects increases at low stellar masses. The white line shows the mode and dispersion of the main sequence (see Fig. 1).

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.