HRDs and the LDB for IC 2602. (a): The same as in Fig. 6 but for IC 2602. Thin blue lines correspond to isochrones of 1, 10, 100 Ma, and 1 Ga from the BT-Settl models (Allard et al. 2013), while the thick blue one to 50 Ma. The figure includes 50 Ma isochrones from: Siess et al. 2000 (red dotted line), D’Antona & Mazzitelli 1994 (black dashed line). (b): Zoom on the (a) plot with the LDB. IC 2602 is Ma old using the BT-Settl bolometric luminosity-age relationship (Allard et al. 2012).