Free Access

Fig. 8.

image

log g dependency on FR, T eff, and [Fe/H]. The left panel illustrates the distribution of points of the tightest relation in FR-T eff-log g space, where the colors introduce metallicity as a fourth dimension. The fit solutions to Eq. (13) at fixed [Fe/H] values of −3.5 dex, −1.75 dex, and 0.00 dex are shown as three parallel hyperplanes. The top right panel resembles the distribution in FR-log g space, only. There, dashed lines indicate the track of the iso-metallicity lines on the surface at a fixed temperature of 5000 K. The inlay shows the most extreme spectra in terms of gravity, as well as the two wavelength regions the FR was computed from (blue). The fit residuals with respect to FR are presented in the lower right frame. All three scatter-plots follow the same [Fe/H] color coding as indicated by the bar on the right.

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.