Deuterium in comet C/1995 O1 (Hale-Bopp): detection of DCN.

نویسندگان

  • R Meier
  • T C Owen
  • D C Jewitt
  • H E Matthews
  • M Senay
  • N Biver
  • D Bockel e-Morvan
  • J Crovisier
  • D Gautier
چکیده

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) x 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.

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عنوان ژورنال:
  • Science

دوره 279 5357  شماره 

صفحات  -

تاریخ انتشار 1998