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Paper: Mg-Al Oxides and the Remarkable Temperature Dependence of their 13 μm and 32 μm Emission Bands
Volume: 497, Why Galaxies Care about AGB Stars III: A Closer Look in Space and Time
Page: 409
Authors: Zeidler, S.; Mutschke, H.; Posch, Th.
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.
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