Hα equivalent width versus the effective temperature for confirmed members of C69. We display data from Dolan & Mathieu (1999, 2001) with filled squares, and from Sacco et al. (2008) with filled diamonds. Our data are displayed with solid circles. In every sample, red symbols are used for the sources classified as accretors. Overlapping large circles highlight sources exhibiting excess in the Spitzer/IRAC photometry. For some sources we had more than one epoch of data (either ours or from Dolan & Mathieu 1999, 2001; Sacco et al. 2008). These different measurements for individual objects appear joined with a solid line. The short-dashed line corresponds to the saturation criterion defined by Barrado y Navascués & Martín (2003). A vertical dotted line highlights the substellar frontier for an estimated age of 5 Myr according to the isochrones from the Lyon group. Particular sources discussed in Appendix A.2.2 are highlighted with gray labels.