Observations of 40-70 micron bands of ice in IRAS 09371 + 1212 and other stars

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...

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Veröffentlicht in:	The Astrophysical journal 1990-05, Vol.355 (1), p.L27-L30
Hauptverfasser:	Omont, A., Forveille, T., Moseley, S. H., Glaccum, W. J., Harvey, P. M., Likkel, L., Loewenstein, R. F., Lisse, C. M.
Format:	Artikel
Sprache:	eng
Schlagworte:	Astronomy Astrophysics CALIBRATION CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS COSMIC DUST CRYSTAL STRUCTURE DUSTS Earth, ocean, space ELECTROMAGNETIC RADIATION EMISSION SPECTRA EMISSIVITY Exact sciences and technology FAR INFRARED RADIATION Giant and subgiant stars GIANT STARS ICE INFRARED RADIATION INFRARED SPECTRA INTERSTELLAR SPACE MORPHOLOGY NEBULAE Normal stars (by class): general or individual OPTICAL PROPERTIES PHYSICAL PROPERTIES RADIATIONS RED GIANT STARS SPACE SPECTRA STARS SURFACE PROPERTIES 640102 > Astrophysics & Cosmology-- Stars & Quasi-Stellar, Radio & X-Ray Sources
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Beschreibung
Zusammenfassung:	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.
ISSN:	0004-637X 1538-4357
DOI:	10.1086/185730