The <i>Gaia</i>-ESO Survey: Lithium measurements and new curves of growth,

The Gaia-ESO Survey (GES) is a large public spectroscopic survey that was carried out using the multi-object FLAMES spectrograph at Very Large Telescope. provides accurate radial velocities, stellar parameters, and elemental abundances for ~115,000 stars in all Milky Way components. In this paper we describe method adopted final data release to derive lithium equivalent widths (EWs) abundances. Lithium EWs were measured two different approaches FGK M-type stars, account intrinsic differences spectra. For fitted line Gaussian components, while direct integration over predefined interval stars. Care taken ensure continuity between regimes. Abundances derived new set of homogeneous curves growth specifically GES, which on synthetic spectral grid consistently with way measured. validated by comparison those other analysis groups methods. ~40,000 could be ~38,000 them. vast majority measures (80%) have been obtained open cluster fields. remaining objects are globular clusters, or field disc, bulge, halo. GES dataset described here will valuable our understanding several processes, from evolution internal mixing evolutionary stages Galactic evolution.