Features of oxide dust particles in circumstellar shells of AGB stars
- Author(s)
- Thomas Posch, Franz Kerschbaum, Harald Mutschke, Dirk Fabian, Dominik Clement, Johann M. Dorschner
- Abstract
We give an overview of the dust emission features that oxide dust particles which are expected to form in circumstellar shells of AGB stars can produce. The dust species considered here are titanium oxides, Ca-Al-oxides, Mg-Al-oxides, Mg-Fe-oxides and amorphous alumina. At least for the presence of the latter three classes of solids, clear observational evidence exists. Some of those stars which form Mg-Al-oxide and Mg-Fe-oxide dust do not show any or do show very little amorphous silicate emission. This raises the question whether there exists a class of low-mass-loss dust shells dominated by oxides and not by silicates.
- Organisation(s)
- Department of Astrophysics
- External organisation(s)
- Friedrich-Schiller-Universität Jena
- Pages
- 141-144
- No. of pages
- 4
- Publication date
- 2003
- Austrian Fields of Science 2012
- 103003 Astronomy
- Portal url
- https://ucris.univie.ac.at/portal/en/publications/features-of-oxide-dust-particles-in-circumstellar-shells-of-agb-stars(a5650a51-c6f7-458f-8d1f-5369d3ea21e8).html