Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979a%26a....76...60a&link_type=abstract
Astronomy and Astrophysics, vol. 76, no. 1, June 1979, p. 60-64. Research supported by the Science Research Council.
Astronomy and Astrophysics
Astrophysics
58
Gas Ionization, Hydrogen Clouds, Infrared Spectra, Orion Nebula, Spatial Distribution, Spectrum Analysis, Gas Density, Graphs (Charts), Infrared Spectrometers, Ionized Gases, Line Spectra, Liquid Helium, Neon
Scientific paper
Spectrophotometric observations between 8 and 13 microns of an ionization-front region in Orion show that a large fraction of the radiation arises from the narrow unidentified emission features at 8.7 and 11.3 microns. This strongly featured continuum emission occurs throughout the length of the infrared bar. It is shown that the emission arises in a neutral region subjected to strong UV irradiation longward of the Lyman limit.
Aitken David K.
Jones Barbara
Roche Patrick F.
Spenser P. M.
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