Transmission spectrum of WASP-49b in the region of the sodium Na i D doublet as observed with HARPS. Upper panel: master-out spectrum and a reference telluric spectrum, for the first night, in the solar system barycentric reference frame. Middle panel: transmission spectrum of the exoplanet atmosphere (light gray), also binned by 20× in black circles. We show a Gaussian fit to each sodium line (red) with contrast of 1.99 ± 0.49% and 1.83 ± 0.65%, and FWHM of 0.42 ± 0.1 Å and 0.22 ± 0.08 Å for the D2 and D1 line, respectively. The rest-frame transition wavelengths are shown with the blue dashed line. Lower panel: Residuals to the Gaussian fit.
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.