Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991natur.350..318b&link_type=abstract
Nature (ISSN 0028-0836), vol. 350, March 28, 1991, p. 318-320. Ministerio de Asuntos Exteriores of Spain-supported research.
Astronomy and Astrophysics
Astronomy
47
Astronomical Spectroscopy, Comet Nuclei, Hydrogen Sulfide, Methyl Alcohol, Microwave Spectra, Formaldehyde, Halley'S Comet, Hydrocyanic Acid, Rotational Spectra, Telescopes, Comets, Austin, Microwave Methods, Hydrogen Sulfide, Methanol, Spectra, Spectroscopy, Wavelengths, Earth-Based Observations, Hydrogen Cyanide, Comet Nuclei, Origin, Formation, Formaldehyde, Procedure, Abundance, Production Rate, Molecules
Scientific paper
Spectroscopic observations of Comet Austin (1989c1) at millimeter wavelengths are reported. The rotational transitions of hydrogen cyanide and formaldehyde were detected. Hydrogen sulfide and methanol, neither of which has previously been detected in a comet, were identified. The presence of hydrogen sulfide places severe constraints on the formation of cometary nuclei, whereas that of methanol supports the hypothesis that cometary nuclei have retained, at least in part, some primitive material originating from the solar nebula.
Bockelée-Morvan Dominique
Colom Pierre
Crovisier Jacques
Despois Didier
Paubert Gabriel
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