Blue boundary of the instability domains for dipole modes. The blue area limited by a dotted line represents the instability domains already presented (ATON evolutionary code, GN93, Z = 0.015) while green and purple lines stand for the blue boundaries of the instability domains for CLES models computed with the AGSS09 mixture and different metallicities and opacity tables (OPAL and OP, respectively). Green and red points have the same meaning as in Fig. 7 and their sizes are proportional to the macroturbulence velocity.