Calibrating the lithium-age relation and its dependence with rotation, activity and metallicity using open clusters and associations

In this work we use a series of open clusters and associations observed by the <strong>Gaia-ESO Survey (GES) </strong>to study the use <strong>of lithium abundances </strong>(Li I spectral line at 6708 Å)<strong> as an age indicator for pre- and main-sequence FGKM late-type stars</strong>. Previous studies of open clusters have shown that lithium depletion is not only strongly age dependent, but also shows a complex pattern with several other parameters, such as rotation, chromospheric activity and metallicity. Using the available data from both <strong>GES iDR6 and Gaia EDR3</strong>, we performed a thorough <strong>membership analysis</strong> and <strong>obtained lists of candidate members for 41 open clusters, ranging in age from 1-3 </strong><strong>Myr</strong><strong> to 5 </strong><strong>Gyr</strong><strong>. </strong>We then conducted a comparative study that allowed us to quantify the observable lithium dispersion in each cluster and <strong>study influence of rotation, activity and metallicity in the lithium dispersion of the selected candidates</strong>. All this allows us to <strong>calibrate a Li-age relation and create empirical lithium envelopes </strong>for several clusters in our sample.