Free Access

Fig. 4

thumbnail

a) Normalised Hα luminosity taken from Reiners et al. (2012) as a function of Δ[Fe/H]; b) normalised Hα luminosity taken from Reiners et al. (2012) as a function of ΔTeff; c) Hα index defined by Gomes da Silva et al. (2011) versus Δ[Fe/H]; d) Hα index defined by Gomes da Silva et al. (2011) versus ΔTeff. The stars in common were taken from our full sample. The red dashed lines mark the limits above which the stars were excluded from the final sample.

This figure is made of several images, please see below:

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.