HRDs and the LDB for Blanco 1. (a) Same as in Fig. 6 but for Blanco 1. 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 120 Ma. The figure includes: a 120 Ma isochrone from Siess et al. 2000 (red dotted line), a 100 and a 200 Ma from D’Antona & Mazzitelli 1994 (black dashed lines). The rest of the symbols follow the same convention as previous HRDs. (b) Zoom on the left plot close to the LDB. The Blanco 1 age is Ma old using the BT-Settl bolometric luminosity-age relationship (Allard et al. 2012). (c) Same as (b), but the LDB is located after discarding sources whose radial velocities are not within the 1σ radial velocity criterion, see Section 2.8. The tri-down symbols are over-imposed in the non-members following this criterion. The Blanco 1 age is Ma (BT-Settl models from Allard et al. 2012).