Astronomy and Astrophysics – Astrophysics
Scientific paper
1999-07-29
1999, A&A 349, 243
Astronomy and Astrophysics
Astrophysics
12 pages, 6 figures. To appear in A&A
Scientific paper
For amorphous carbon several laboratory extinction data are available, which show quite a wide range of differences due to the structural complexity of this material. We have calculated self-consistent dynamic models of circumstellar dust-shells around carbon-rich asymptotic giant branch stars, based on a number of these data sets. The structure and the wind properties of the dynamical models are directly influenced by the different types of amorphous carbon. In our test models the mass loss is not severely dependent on the difference in the optical properties of the dust, but the influence on the degree of condensation and the final outflow velocity is considerable. Furthermore, the spectral energy distributions and colours resulting from the different data show a much wider spread than the variations within the models due to the variability of the star. Silicon carbide was also considered in the radiative transfer calculations to test its influence on the spectral energy distribution.
Andersen Anja C.
Hofner Susanne
Loidl Rita
No associations
LandOfFree
Optical properties of carbon grains: Influence on dynamical models of AGB stars does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Optical properties of carbon grains: Influence on dynamical models of AGB stars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical properties of carbon grains: Influence on dynamical models of AGB stars will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-420405