Observations of the Orion nebula at 100 microns

Astronomy and Astrophysics – Astronomy

Scientific paper

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Cosmic Dust, Infrared Astronomy, Interstellar Matter, Nebulae, Black Body Radiation, Infrared Spectrometers, Interstellar Radiation, Lear Jet Aircraft, Orion Constellation, Thermal Emission

Scientific paper

The Orion nebula spectrum was obtained using an airborne cooled grating spectrometer in the spectral range from 80 to 125 microns at a resolution of 8 microns. The spectrum, corrected for instrument profile and atmospheric water vapor absorption, could be fit by the 60 and 100 K black body curves. The results are in good agreement with those of Erickson et al. (1973) and are consistent with a thermal emission spectrum produced by cool interstellar grains radiating at a wavelength much longer than the grain size.

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