Top panel: observed stars in the age-[Fe/H] plane, colour-coded with their Teff. Bottom two panels: highest possible Teff for a given age and [Fe/H] obtained from the stellar evolution tracks without (middle) and with (bottom) photometry and log g cuts. Selected curves of constant Teff are given for reference. For Teff ≤ 6500 K, the highest “observable” values of Teff do not depend on the cuts imposed on the sample and are simply the result of stellar evolution effects.
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.