Deuterium in Comet C/1995 O1 (Hale-Bopp): Detection of DCN
- 13 March 1998
- journal article
- other
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 279 (5357) , 1707-1710
- https://doi.org/10.1126/science.279.5357.1707
Abstract
Deuterated hydrogen cyanide (DCN) was detected in a comet, C/1995 O1 (Hale-Bopp), with the use of the James Clerk Maxwell Telescope on Mauna Kea, Hawaii. The inferred deuterium/hydrogen (D/H) ratio in hydrogen cyanide (HCN) is (D/H)HCN= (2.3 ± 0.4) × 10−3. This ratio is higher than the D/H ratio found in cometary water and supports the interstellar origin of cometary ices. The observed values of D/H in water and HCN imply a kinetic temperature ≥30 ± 10 K in the fragment of interstellar cloud that formed the solar system.Keywords
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