SpringerLink
ForumSpringerAstron. Astrophys.
ForumWhats NewSearchOrders


Astron. Astrophys. 317, 121-124 (1997)

Next Section Table of Contents

The effect of turbulent pressure on the red giants and AGB stars

II. On the mechanism powering the strong stellar winds

S.Y. Jiang and R.Q. Huang

1 Yunnan observatory, Chinese Academy of Sciences, P.O. Box 110, 650011 Kunming, P.R. China

Received 24 January 1996 / Accepted 7 May 1996

Abstract

A criterion for the occurrence of dynamical instability in the convective envelopes of red giants and AGB stars is presented. Using this criterion we find that the effect of turbulent pressure causes the dynamical instability in the regions very close to the sufaces of red giants and AGB stars, which affect the mass ejection outwards. This may be the mechanism powering the strong stellar winds of red giants and AGB stars with very low surface temperature and faint radiation pressure.

Key words: stars: AGB — stars: mass loss — instabilities

Send offprint requests to: R.Q. Huang

Contents

Next Section Table of Contents

© European Southern Observatory (ESO) 1997

helpdesk.link@springer.de