V339 Del: comparison of He II 1640 Å (bottom) to He II 4686 Å (top) in 2015 May. This was the last contemporaneous UV-optical pair available for comparing the dust properties. The optical spectrum was seven point median filtered, fluxes are scaled. See text for discussion.
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.