Soft excess of T Tau compared with other T Tauri stars as well as main sequence stars. Main sequence stars are mainly from Ness et al. (2002, 2004). The decrease of the O VII to O VIII ratio with increasing oxygen luminosity is a result of the increasing average coronal temperature for increasingly active MS stars (e.g., Johnstone & Güdel 2015). Plot symbol sizes scale with mass accretion rate.
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.