Physics
Scientific paper
Jan 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005esasp.577..447a&link_type=abstract
In: Proceedings of the dusty and molecular universe: a prelude to Herschel and ALMA, 27-29 October 2004, Paris, France. Ed. by A
Physics
2
Circumstellar Matter, Infrared Stars, Laboratory Methods
Scientific paper
The origin of the so-called "21 μm" feature that is especially prominent in the spectra of some carbon-rich protoplanetary nebulae is the matter of a lively debate. A large number of potential band carriers have been presented and discarded within the past decade. We present some of the problems related to the hitherto proposed feature identifications.
Andersen Anja C.
Mutschke Harald
Posch Thomas
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