Free Access

Fig. 7.


Two spectra of the RR Lyrae star NGC 3201-V90 (CVSGGC) observed approximately 24 h apart show very different Balmer profiles. Hα and Hβ emission is only observed in one of the spectra, but not in the other one.

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.