Free Access

Fig. 7

image

Phase-resolved transmission spectrum at the Na (top) and Hα (bottom) lines for WASP-21b. A radial velocity shift traced by the Na line center can be noticed during the transit event, which agrees with the radial velocity shift induced by the planet orbital motion. It is not clear at the Hα line center.

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.