Deuterium in Comet C/1995 O1 (Hale-Bopp): Detection of DCN-Reference-Cited by-同舟云学术

Deuterium in Comet C/1995 O1 (Hale-Bopp): Detection of DCN

Published:1998-03-13 Issue:5357 Volume:279 Page:1707-1710
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Meier Roland¹²³⁴,Owen Tobias C.¹²³⁴,Jewitt David C.¹²³⁴,Matthews Henry E.¹²³⁴,Senay Matthew¹²³⁴,Biver Nicolas¹²³⁴,Bockelée-Morvan Dominique¹²³⁴,Crovisier Jacques¹²³⁴,Gautier Daniel¹²³⁴

Affiliation:

1. R. Meier, T. C. Owen, D. C. Jewitt, N. Biver, University of Hawaii, Institute for Astronomy, 2680 Woodlawn Drive, Honolulu, HI 96822, USA.

2. H. E. Matthews, National Research Council of Canada, Herzberg Institute of Astrophysics, 5071 West Saanich Road, Victoria, BC V8X 4M6, Canada, and Joint Astronomy Centre, 660 North A'Ohoku Place, Hilo, HI 96720, USA.

3. M. Senay, Five College Radio Astronomy Observatory, University of Massachusetts, Amherst, MA 01003–4517, USA.

4. D. Bockelée-Morvan, J. Crovisier, D. Gautier, Observatoire de Paris-Meudon, 5 Place Jules Janssen, F-92195 Meudon, Cedex, France.

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.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

Reference46 articles.

1. A Determination of the HDO/H 2 O Ratio in Comet C/1995 O1 (Hale-Bopp)

2. Halley:

3. Eberhardt P., Reber M., Krankowsky D., Hodges R. R., Astron. Astrophys. 302, 301 (1995);

4. Balsiger H., Altwegg K., Geiss J., J. Geophys. Res. 100, 5287 (1995);

5. . Hyakutake: D. Bockelée-Morvan et al. Icarus in press. As explained in (1) the quoted value is the in situ determination in Halley which has a much higher precision than remote measurements.

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