Near-infrared CCD for all variables. The solid curve and dotted curve represent the sequence of dwarf and giants from Bessell & Brett (1988). The locus of CTT stars is shown as long-dashed lines (Meyer et al. 1997), while the dot-dashed lines represent the reddening vectors (Cohen et al. 1981). Diamonds and open triangles represent the kinematic members and outliers, respectively. The solid arrow indicates reddening vector corresponding to A_V = 5 mag. Each star is numbered with the last two digits of the Star ID from Table 2.