对彗星C/1995 O1（海尔-波普彗星）中HDO/H₂O比率的测定。

A determination of the HDO/H2O ratio in comet C/1995 O1 (Hale-Bopp).

作者信息

Meier R, Owen T C, Matthews H E, Jewitt D C, Bockelée-Morvan D, Biver N, Crovisier J, Gautier D

机构信息

University of Hawaii, Institute for Astronomy, 2680 Woodlawn Drive, Honolulu, HI 96822, USA.

出版信息

Science. 1998 Feb 6;279(5352):842-4. doi: 10.1126/science.279.5352.842.

DOI:10.1126/science.279.5352.842

PMID:9452379

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.

摘要

利用位于夏威夷莫纳克亚山的詹姆斯·克拉克·麦克斯韦望远镜，在彗星C/1995 O1（海尔-波普彗星）中探测到了重水（HDO）。海尔-波普彗星水的推断氘/氢比为(3.3±0.8)×10⁻⁴。这一结果与对哈雷彗星的原位测量以及在C/1996 B2（百武彗星）中发现的值一致。这个氘/氢比高于地球水的氘/氢比，且比原太阳氢分子的值高10倍以上，这意味着彗星不可能是地球上海洋的唯一来源。