Free Access

Fig. 3


Spectrum and continuum of the quasar SDSS J134826.65+290623.0. This quasar belongs to the sample of SDSS z ~ 3 quasars that is used to derive the PCA eigenvectors (Sect. 3). Our estimate of the continuum is shown with the thick red line and a zoom of the Lyman-α forest region is shown in the inset.

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.