Fig. B.6.

See text for a general description of the figure. NGC 4594: wavelength coverage of HST/STIS spectrum does not include [O I] lines. The [S II] lines have separate narrow profile peaks and a broader profile underneath. A broad component for Hα is to improve the fit. This broad component is also needed for the Palomar spectrum, although a single narrow Gaussian is sufficient for the forbidden lines.
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.