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| Paper: |
Infrared dust features of late-type stars and planetary nebulae |
| Volume: |
73, Airborne Astronomy Symposium on the Galactic Ecosystem: From Gas to Stars to Dust |
| Page: |
395 |
| Authors: |
Glaccum, W. |
| Abstract: |
The author presents 16-65 micron spectra of late-type stars and proto-planetary nebulae (PPN) obtained with the Goddard 24-channel spectrophotometer from the Kuiper Airborne Observatory (KAO). The spectra of these objects contain most of the 9-13 known dust features, all discovered from the KAO, at wavelengths greater than 22 microns. The 8-100 micron spectra of a few representative objects are modeled with simple grains selected from a wide range of candidate solids. Hot sapphire is the most likely source of the 13 micron feature found in some M and MS star. Likely candidates for other features include ice, sulfides, and crystalline silicates. Also presented is a review of grain candidate materials for which optical properties in the far infrared have been measured, and a list of those for which measurements are needed. |
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