Possible identification of the 45-micron ice signature in Orion

Details Possible identification of the 45-micron ice signature in Orion Possible identification of the 45-micron ice signature in Orion

Dec 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978natur.276..593p&link_type=abstract

Nature, vol. 276, Dec. 7, 1978, p. 593, 594. Research supported by the Centre National d'Etudes Spatiales and Koninklijke Nederl

Physics

Optics

10

Far Infrared Radiation, Ice Formation, Nebulae, Signature Analysis, Astronomical Models, Cassegrain Optics, Cosmic Dust, Gratings (Spectra), Interstellar Matter, Orion Constellation

Scientific paper

The 45-micron emission from the KL nebula was observed at a constant altitude of 11,300. Observations were obtained by use of a grating spectrometer mounted at the Cassegrain focus of a 30-cm telescope with a 2400-mm focus. The broad width of the band and its peak wavelength characteristics suggest that the detected emission is predominantly due to amorphous ice. The data seem to support a shell model where the ice mantles are only present at the periphery nebula.

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