Interstellar ice grains in the Taurus molecular clouds

Details Interstellar ice grains in the Taurus molecular clouds Interstellar ice grains in the Taurus molecular clouds

May 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983natur.303..218w&link_type=abstract

Nature (ISSN 0028-0836), vol. 303, May 19, 1983, p. 218-221.

Computer Science

98

Ice, Interstellar Matter, Molecular Clouds, Nebulae, Absorption Spectra, Milky Way Galaxy, Wavelengths

Scientific paper

Observations of the dust-embedded stars XL Tau, HL Tau, and Elias 1 and the background stars Elias 3, 6, 9, and 16 made with the United Kingdom IR Telescope at Mauna Kea in November 1981 in the 2.5-4.6-micron range are reported. Absorption at around 3 microns was observed and found to be correlated with extinction at visual wavelengths (AV). It is attributed to the presence of water ice as a constituent of interstellar grains. The absorption was present in stars with AV as low as 4-6 mag, suggesting that ice-containing grains are more widespread in Taurus than elsewhere in the galaxy. Higher spectral and spatial resolution will be required to determine the compositional and distributional characteristics of the cloud grains.

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