This article has an erratum: [https://doi.org/10.1051/0004-6361/201117721e]
Hα profile variations showing the development of the DACs. From bottom to top, JD 55 675, 55 688, 55 697, 55 703, and 55 712. Only the negative radial velocity components are shown, fluxes are scaled but the continuum is otherwise unnormalized.
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.