Free Access

Fig. 2


X-Shooter spectra around the Ca ii H & K lines of SDSS J0929+0238 (the spectrum is vertically displaced by 1 unit for display purposes) and SDSS J1035+0641. The dotted lines mark the position of the stellar Ca ii H &K lines. The CH lines are much more prominent in the former because the carbon abundance is almost 1 dex larger and the effective temperature is almost 300 K cooler.

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.