Stellar Evolution and Mass Loss on the Asymptotic Giant Branch

Astronomy and Astrophysics – Astrophysics

Scientific paper

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latex, 10pages, 3 figures available on request from azijlstr@eso.org

Scientific paper

10.1007/BF00667863

Mass loss dominates the stellar evolution on the Asymptotic Giant Branch. The phase of highest mass-loss occurs during the last 1--10\% of the AGB and includes the so-called Miras and OH/IR stars. In this review I will discuss the characteristics and evolution of especially Miras, and discuss how they are linked to the mass loss. There are indications that high mass-loss rates are only reached for relatively young stars with massive progenitors. The mass loss rates vary both on long and short time scales: the short-term variations are likely linked to luminosity variations associated with the thermal-pulse cycle. The influence of mass loss in the post-AGB phase is also discussed.

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