Free Access

Fig. 5


S/N of individual spectra of RV standards for the RV zero point calibration. There are between 2 and 20 spectra per star, typically 10. The UVES setup used is 580 (see Table 1) and the GIRAFFE setups are HR9B, HR10, 15N, and 21. The very high S/N are due to the RV standard brightness (see Table 3) and to the need of integrating for relatively long exposure times to average out illumination non-homogeneities within the fibers.

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.