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Variability, Pulsations and Mass Loss of Evolved Stars

Invited talk

Published online by Cambridge University Press:  29 August 2019

S. Höfner
S. Höfner*
Affiliation:
Dept. of Physics & Astronomy, Uppsala University, Uppsala, Sweden email: susanne.hoefner@physics.uu.se
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Abstract

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Evolved low- and intermediate-mass stars that have reached the Asymptotic Giant Branch (AGB) phase tend to show pronounced long-period variability due to large-amplitude pulsations. Those pulsations are considered to play a key role in triggering mass loss through massive dusty winds. The winds enrich the surrounding interstellar medium with newly-produced chemical elements and dust grains, providing building blocks for new generations of stars and planets. Considerable efforts are being made to understand the physics of AGB stars, and to develop quantitative models. This talk gave a brief summary of recent developments, with references to the literature.

Keywords

Stars: AGB and post-AGBstars: atmospheresstars: windsoutflowsstars: mass losscircumstellar matter
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 14 , Symposium S339: Southern Horizons in Time-Domain Astronomy , November 2017 , pp. 95 - 97
Copyright
© International Astronomical Union 2019 

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