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18 April 2024

» pubmed » pmid9452379

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A determination of the HDO/H2O ratio in comet C/1995 O1 (Hale-Bopp)
R Meier ; T C Owen ; H E Matthews ; D C Jewitt ; D Bockelée-Morvan ; N Biver ; J Crovisier ; D Gautier ;
Date:	6 Feb 1998
Journal:	Science, 279 (5352), 842-4
Abstract:	Deuterated water (HDO) was detected in comet C/1995 O1 (Hale-Bopp) with the use of the James Clerk Maxwell Telescope on Mauna Kea, Hawaii. The inferred D/H ratio in Hale-Bopp’s water is (3.3 +/- 0.8) x 10(-4). This result is consistent with in situ measurements of comet P/Halley and the value found in C/1996 B2 (Hyakutake). This D/H ratio, higher than that in terrestrial water and more than 10 times the value for protosolar H2, implies that comets cannot be the only source for the oceans on Earth.
Source:	PubMed, pmid9452379
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