THE EFFECT OF TURBULENT PRESSURE ON THE RED GIANTS AND AGB STARS .2. ON THE MECHANISM POWERING THE STRONG STELLAR WINDS

A criterion for the occurrence of dynamical instability in the convect ive envelopes of red giants and AGE stars is presented. Using this cri terion we find that the effect of turbulent pressure causes the dynami cal instability in the regions very close to the surfaces of red giant s and AGE stars, which affect the mass ejection outwards. This may be the mechanism powering the strong stellar winds of red giants and AGE stars with very low surface temperature and faint radiation pressure.