![]() ![]() ![]() The results of our calculations and those of other authors are combined for further elucidation of the core mass-interflash period relation and the core mass-luminosity relation. The behavior of the first major thermal pulse is discussed in detail. Prior to the first major thermal pulse the luminosity of the helium-burning shell is found to undergo a number of small oscillations which ultimately grow to become the first major pulse. A detailed description is given concerning the reignition of the hydrogen-burning shell through the appearance of the first major thermal pulse. The limiting mass for nondegenerate core carbon ignition is determined as a function of initial model mass and composition. Respectively) than in previous calculations for 3M_sol.The asymptotic giant branch evolution of intermediate-mass stars is further investigated following the end of the second dredge-up phase. Occur at significantly smaller core masses (0.584M_sol and 0.608M_sol, We find that dredge-up and the transformation into a carbon star The 14th pulse sufficient carbon has been brought to the surface to produce aĬarbon star. Thermal pulse events and we find third dredge-up after the 7th pulse. Strong hot-bottomīurning is observed after the 5th pulse. We obtain a maximum helium luminosity of 1.7x10^9 L_solĪnd significantly deep dredge-up after the second pulse. Viscous mesh in order to improve the numerical stability of the calculations.įor the 5M_sol star, we evolve through 25 thermal pulses and their associated Structure, convective mixing and nuclear burning. ![]() ![]() Which has a fully implicit and simultaneous method for solving for the stellar Solar metallicity calculated with the Eggleton stellar evolution code (STARS), Stancliffe (IoA and 4 other authors Download PDF Abstract: We present results of the evolution of AGB stars of 3M_sol and 5M_sol with Download a PDF of the paper titled Deep Dredge-up in Intermediate-Mass TP-AGB Stars, by R.J. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |