From Coma Abundances to Nucleus Composition

Details From Coma Abundances to Nucleus Composition From Coma Abundances to Nucleus Composition

Oct 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999ssrv...90..117h&link_type=abstract

Space Science Reviews, v. 90, Issue 1/2, p. 117-130 (1999).

Other

16

Coma, Nucleus, Heat Diffusion, Gas Diffusion, Mother Molecules

Scientific paper

A major goal of comet research is to determine conditions in the outer solar nebula based on the chemical composition and structure of comet nuclei. The old view was to use coma abundances directly for the chemical composition of the nucleus. However, since the composition of the coma changes with heliocentric distance, r, the new view is that the nucleus composition msut be determined from analysis of coma mixing ratios as a function of r. Taking advantage of new observing technology and the early detection of the very active Comet Hale-Bopp (C/1995 O1) allows us to determine the coma mixing ratios over a large range of heliocentric distances.

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