| Literature DB >> 9311932 |
D C Jewitt1, H E Matthews, T Owen, R Meier.
Abstract
The 12C/13C, 14N/15N, and 32S/34S isotope ratios in comet Hale-Bopp (C/1995 O1) were determined through observations taken with the James Clerk Maxwell Telescope. Measurements of rare isotopes in HCN and CS revealed isotope ratios of H12CN/H13CN = 111 +/- 12, HC14N/HC15N = 323 +/- 46, and C32S/C34S = 27 +/- 3. Within the measurement uncertainties, the isotopic ratios are consistent with solar system values. The cometary volatiles thus have an origin in the solar system and show no evidence for an interstellar component.Entities:
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Year: 1997 PMID： 9311932 DOI： 10.1126/science.278.5335.90
Source DB: PubMed Journal: Science ISSN： 0036-8075 Impact factor: 47.728