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| Paper: |
External Shaping of Circumstellar Envelopes of Evolved Stars |
| Volume: |
497, Why Galaxies Care about AGB Stars III: A Closer Look in Space and Time |
| Page: |
193 |
| Authors: |
Cox, N. L. J. |
| Abstract: |
The circumstellar envelopes of asymptotic giant branch (AGB) stars and
red supergiants (RSGs) are complex chemical and physical environments,
and the specifics of their mass-loss history are important for both
stellar and galactic evolution. One key aspect in this is to understand
how the circumstellar medium of these stars can be shaped and affected
by both internal and external mechanisms. These influences can skew our
view on the (dust) chemistry and mass-loss history of these stars, and
hence their role in the chemical enrichment of galaxies. This contribution
focuses on the external mechanism related to the interaction between the
slow dusty stellar wind and the local ambient medium. I will discuss what
recent observations and hydrodynamical simulations have revealed and how
these can help us learn more about AGB stars and RSGs, as well as the
interstellar medium (ISM). |
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