Position of UBC1-106 among isochrones in the plane of Π₀ against mass (left panel) and T_eff (right panel), respectively. The coloured part of each line indicates the mass range in which the isochrone crosses the theoretical γ Dor instability strip of Dupret et al. (2005). The clear separation of the isochrones highlights the potential that g-mode asteroseismology holds for age-dating young open clusters.