Astronomy and Astrophysics – Astrophysics
Scientific paper
May 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985a%26a...146l...6g&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 146, no. 1, May 1985, p. L6-L8.
Astronomy and Astrophysics
Astrophysics
55
Infrared Absorption, Interstellar Matter, Molecular Clouds, Sulfur, Absorption Spectra, Cosmic Dust, Molecular Spectra, Pre-Main Sequence Stars
Scientific paper
Two new absorption features are reported in the highly obscured infrared
source W 33 A. The stronger of these occurs at 4.9 microns; on the basis
of laboratory experiments, it is found to be due to an as yet
unidentified, sulfur-containing molecule on the mantles of dust grains.
The weaker feature, at 3.9 microns, is identified as solid H2S.
Baas F.
Geballe Thomas Ronald
Greenberg Mayo J.
Schutte W.
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