7 Appendix

  

Table 3: Selected evolutionary quantities (see text) for stellar models with Y=0.23 and Z=0.0006 without element diffusion. Ages are in Gyr and masses are in solar units

  

Table 4: The same as in Table 3 for models with element diffusion

  

Table 5: Selected TO quantities for H burning isochrones with Y=0.23 and Z=0.0006, with and without element diffusion for the labeled values of age (Gyr)

  

Table 6: Selected evolutionary quantities for ZAHB models with Z=0.0006

Table 3 lists selected evolutionary quantities for the new models with Z=0.0006 when the efficiency of element sedimentation is neglected. Left to right one finds: mass of the model, age, luminosity and effective temperature at the track Turn-Off (TO), mean luminosity of the RGB "bump'', age at the He flash and the corresponding luminosity, mass of the He core and amount of extra-He brought to the surface at this time. Table 4 gives the same quantities but for models where element sedimentation is taken into account according to the procedure reported in Paper I. Table 5 gives details on the isochrone TO over the explored range of ages for the new models with Z=0.0006. Table 6 gives selected evolutionary quantities for the new HB models with Z=0.0006.

Finally we compare the evolutionary characteristics of our models with those of similar models, for the same chemical composition and slightly different physics, recently presented by Straniero et al. (1997) finding a substantial agreement. Regarding the H burning phases, there is a good agreement in the luminosity and effective temperature of the TO region, while our TO ages are lower by about 10%, presumably due to the adoption of a different EOS. As far as the evolutionary characteristics at the He flash is concerned, the value of the extrahelium brought to the surface during the first dredge-up is the same, while our He cores are larger of about 0.005 $M_{\odot}$. This very slight difference could be due to our adoption of updated calculations for plasma neutrino energy losses (Haft et al. 1994).