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Chemical enrichment of the ISM by stellar ejecta

Published online by Cambridge University Press:  05 March 2015

Sun Kwok
Sun Kwok*
Affiliation:
Faculty of Science, The University of Hong Kong, Hong Kong, China email: [email protected]
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Abstract

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The family of unidentified infrared emission features, consisting of discrete and plateau features in the mid-infrared, are now observed in distant galaxies. A significant fraction of the total energy output of some infrared galaxies is emitted in these features. Comparisons of these features with those observed in the circumstellar and interstellar media suggest that these organic species are synthesized and ejected by evolved stars. Models of possible chemical structures of the carrier of these features are discussed.

Keywords

ISM: dustplanetary nebulae: generalISM: lines and bandsISM: molecules
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 10 , Highlights H16: Highlights of Astronomy , August 2012 , pp. 623
Copyright
Copyright © International Astronomical Union 2015 

References

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Smith, J. D. T., Draine, B. T., Dale, D. A., et al. 2007, ApJ 656, 770CrossRefGoogle Scholar