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Low Resolution Spectrum of the Orion Nebula in the 60–300 μ Range

Published online by Cambridge University Press:  14 August 2015

C. D. Swift ,
F. C. Witteborn ,
E. F. Erickson ,
L. J. Caroff ,
G. C. Augason ,
A. J. Mord ,
L. W. Kunz  and
L. P. Giver
C. D. Swift
Affiliation:
Ames Research Center, NASA, Moffett Field, Calif. 94035, U.S.A.
F. C. Witteborn
Affiliation:
Ames Research Center, NASA, Moffett Field, Calif. 94035, U.S.A.
E. F. Erickson
Affiliation:
Ames Research Center, NASA, Moffett Field, Calif. 94035, U.S.A.
L. J. Caroff
Affiliation:
Ames Research Center, NASA, Moffett Field, Calif. 94035, U.S.A.
G. C. Augason
Affiliation:
Ames Research Center, NASA, Moffett Field, Calif. 94035, U.S.A.
A. J. Mord
Affiliation:
Ames Research Center, NASA, Moffett Field, Calif. 94035, U.S.A.
L. W. Kunz
Affiliation:
Ames Research Center, NASA, Moffett Field, Calif. 94035, U.S.A.
L. P. Giver
Affiliation:
Ames Research Center, NASA, Moffett Field, Calif. 94035, U.S.A.

Abstract

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Airborne observations of the Trapezium region of the Orion Nebula in the 60–300 μ range have been made from 13.7 km altitude using a Michelson interferometer with the Rice University 12-in. Flying Infrared Telescope. Fourier analysis of five interferometer scans provided spectra with resolution ranging from 7 cm–1 to 20 cm–1. These spectra were compared with lunar spectra taken with the same instrument at the same altitude to correct for instrumental and atmospheric effects. A weighted combination of these scans provides a low resolution spectrum. The radiation per unit frequency interval at 190 μ was found to be at least 40% of that measured between 75 and 90 μ. Neglecting possible features in the spectrum, its general shape is consistent with a blackbody near 70 K. The resolution is inadequate to resolve spectral lines.

Type
Part VIII Dust and H II Regions
Information
Symposium - International Astronomical Union , Volume 52: Interstellar Dust and Related Topics , 1973 , pp. 453 - 457
Copyright
Copyright © Reidel 1973 

References

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