Ice in the Taurus molecular cloud - Modelling of the 3-microns profile

Details Ice in the Taurus molecular cloud - Modelling of the 3-microns profile Ice in the Taurus molecular cloud - Modelling of the 3-microns profile

May 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985mnras.214..289v&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 214, May 15, 1985, p. 289-305.

Astronomy and Astrophysics

Astronomy

43

Absorption Spectra, Astronomical Models, Ice, Interstellar Matter, Molecular Clouds, Taurus Constellation, Ammonia, Astronomical Spectroscopy, Optical Thickness, Water

Scientific paper

Detailed calculations of the absorption by interstellar core-mantle particles with mantles of different compositions are compared with observations of the 3 μm ice band in the Taurus molecular cloud. The strength and shape of the 3-μm band is shown to be a remarkably good diagnostic of the physical state and evolution of the dust in molecular clouds. The strength of the band is consistent with large fractional H2O mantle concentrations, in the range 60 - 70 per cent, as predicted by theoretical studies of cloud chemistry and as expected from the high oxygen abundance in pre-molecular clouds.

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