Mg-Al Oxides and the Remarkable Temperature Dependence of their 13 μm and 32 μm Emission Bands
- Author(s)
- Simon Zeidler, Harald Mutschke, Thomas Posch
- Abstract
We present the temperature-dependent (10-928 K) infrared spectra of corundum and spinel, two refractory solids which occur in the stellar outflows of oxygen-rich AGB stars. From our measurements, we were able to calculate the temperature-dependent optical constants by oscillator fits. These new data are useful to further constrain the still poorly understood features of oxide dust around AGB stars, especially the 13 μm and 32 μm emission bands. For the latter, spinel continues to be the most promising carrier.
- Organisation(s)
- Department of Astrophysics
- External organisation(s)
- Friedrich-Schiller-Universität Jena
- Pages
- 409-410
- No. of pages
- 2
- Publication date
- 2015
- Austrian Fields of Science 2012
- 103003 Astronomy, 103004 Astrophysics
- Portal url
- https://ucrisportal.univie.ac.at/en/publications/mgal-oxides-and-the-remarkable-temperature-dependence-of-their-13-m-and-32m-emission-bands(5f3b525e-e5cf-44a9-9713-a7df4b845bea).html