Free Access

Fig. 1

thumbnail

The BPT-diagram for galaxies with available optical spectra. Pure AGNs are found above the solid line (Kewley et al. 2001), while pure star forming galaxies are found below the dashed line (Kauffmann et al. 2003). Typical 1σ errors are indicated in the upper right corner.

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.