Optical-IR color-color diagram (r−i,H−K). Symbols as in Figs. 9 and 10. The dashed line is the adopted limit for selection of NIR-excess objects from this particular diagram. The magenta thick line in the lower-left part indicates the location of unreddened stars in the mass range 1−1.4 M⊙. Much larger fractions of the H58 stars and of the RGS11 YSOs show a NIR excess using this diagram, compared to that of Fig. 10.
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.