The 45 micron H2O ice band in the Kleinmann-Low Nebula

Details The 45 micron H2O ice band in the Kleinmann-Low Nebula The 45 micron H2O ice band in the Kleinmann-Low Nebula

Apr 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981apj...245..148e&link_type=abstract

Astrophysical Journal, Part 1, vol. 245, Apr. 1, 1981, p. 148-153.

Astronomy and Astrophysics

Astrophysics

57

Astronomical Spectroscopy, Ice Reporting, Infrared Spectra, Nebulae, Spectral Bands, Airborne Equipment, Astronomical Models, Continuous Spectra, Spectral Resolution

Scientific paper

The spectrum of the Kleinmann-Low Nebula has been measured from 105 to 365 (95-27 μm) with ∼6 cm-1 resolution using NASA's Kuiper Airborne Observatory. The data show a broad absorption with a maximum depth of ∼5% at 240 cm-1 (42 μm) relative to the adjacent continuum. The feature is probably real, since a featureless spectrum of Mars was obtained on one of the same flights. The spectrum is well fitted by a model consisting of an absorbing layer of silicate water-ice grains obscuring an 87 K slab with optical depth varying smoothly with frequency. This model also shows a water-ice feature at 3.1 μm which is consistent with the strength of the 3.1 m absorption observed in the spectrum of the Becklin-Neugebauer source.

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