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Observations of 40-70 micron bands of ice in IRAS 09371 + 1212 and other stars
Omont, A.; Forveille, T.; Moseley, S. H.; Glaccum, W. J.; Harvey, P. M.; Likkel, L.; Loewenstein, R. F.; Lisse, C. M.
AA(Grenoble, Observatoire, France), AB(Grenoble, Observatoire, France), AC(NASA, Goddard Space Flight Center, Greenbelt, MD), AD(NASA, Goddard Space Flight Center, Greenbelt, MD), AE(Texas, University, Austin), AF(California, University, Los Angeles), AG(Yerkes Observatory, Williams Bay, WI), AH(NASA, Goddard Space Flight Center; STX, Inc., Greenbelt, MD)
Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 355, May 20, 1990, p. L27-L30. (ApJL Homepage)
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NASA/STI Keywords:
Ice, Infrared Spectra, Interstellar Matter, Red Giant Stars, Stellar Envelopes, Calibrating, Cosmic Dust, Crystal Structure, Emissivity, Far Infrared Radiation
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IRAS 09371 + 1212 is still an absolutely unique object. This M giant star, with circumstellar CO and a spectacular bipolar nebula, displays unique IRAS FIR colors which had been attributed to strong emission in the 40-70-micron bands of ice, as subsequently supported by the observation of a strong 3.1-micron absorption band. The results of the KAO observations have confirmed its unusual nature: the far-infrared bands of ice are by far the strongest known. Its dust temperature, 50 K or less, is by far the lowest known for a late-type circumstellar envelope.

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