CAOSP abstracts, Volume: 32, No.: 2, year: 2002
- Author(s): Neslušan, L.
- Journal: Contributions of the Astronomical Observatory Skalnaté Pleso, vol. 32, no. 2, p. 145-174.
- Date: 10/2002
- Title: A comparison between the compositions of cometary and interstellar materials. I. Molecular abundances
- Keyword(s): comets: general, Solar System: formation, ISM: clouds, ISM: molecules
- Pages: 145 -- 174
Comets were created as a by-product of planet formation from pristine
interstellar material. A certain similarity between the composition of
both cometary nuclei and interstellar clouds has actually be observed
by several authors in few last decades. We summarize the quantitative
measurements of abundances of observed molecules in both the above
entities and discuss their similarities and differences. The found
variety of the chemical composition of comets is practically within
the range of observed molecular composition of relatively cold matter
in the Galaxy. It proves that the gaseous and dusty components from
which the cometary nuclei were built are primordial.
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