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| Paper: |
Nucleation Studies under the Conditions of Carbon-rich AGB Star
Envelopes: TiC |
| Volume: |
445, Why Galaxies Care about AGB Stars II: Shining Examples and Common Inhabitants |
| Page: |
361 |
| Authors: |
Patzer, A. B. C.; Wendt, M.; Chang, C.; Sülzle, D. |
| Abstract: |
Many studies of dust nucleation in winds of carbon-rich AGB stars
consider primarily carbon as the dust forming material. But
dust grains formed in such circumstellar envelopes are rather a
mixture of several chemical elements such as titanium or
silicon in addition to carbon, as verified by many
investigations of pre-solar grains enclosed in meteorites, for
example. In this contribution we focus on the study of the
nucleation of titanium carbide particles from the gas phase.
The necessary properties of molecular titanium carbide
clusters have been estimated by the density functional approach,
and the first implications for the homogeneous nucleation of TiC
are studied for conditions representative of circumstellar dust
shells around carbon-rich AGB stars. |
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