Free Access

Fig. 8


Metal pollution in DA white dwarfs as a function of Teff (bottom axis) and cooling age (top axis, for log  g = 8). Star-shaped symbols represent white dwarfs where their dust disks were detected in the infrared. Bottom panel: log (Ca/H) abundances (open circles and stars) and upper limits (gray dots) from Koester & Wilken (2006). Middle panel: the fraction of white dwarfs with photospheric Ca and Si detections. Top panel: inferred total accretion rates, where the Si and Ca abundances have been scaled by bulk Earth abundances (BE) and by solar abundances (S). See text for further explanations.

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.