Abstract
The spectral properties of planetary nebulae near 10 ¿m are summarized. Those nebulae with strong dust emission near 10 μm can often be classified as oxygen- or carbon- rich by the detection of spectral signatures of dust grains whose formation depends upon the C/O ratio of the material in which they condense. The classification of pn as C or O rich according to their 8–13 μm spectra can be accomplished quickly and simply without recourse to detailed models, and provides a means of investigating abundances in objects which are difficult to study by other techniques. Some preliminary results on the properties of pn located near the Galactic centre are presented.
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© 1987 D. Reidel Publishing Company
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Roche, P.F. (1987). Spectroscopy at 8–13 μm as a Probe of the Carbon to Oxygen Ratio in Planetary Nebulae. In: Planetary and Proto-Planetary Nebulae: From IRAS to ISO. Astrophysics and Space Science Library, vol 135. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-3891-5_6
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DOI: https://doi.org/10.1007/978-94-009-3891-5_6
Publisher Name: Springer, Dordrecht
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