Origin of metal ions in the coma of P/Giacobini-Zinner

Details Origin of metal ions in the coma of P/Giacobini-Zinner Origin of metal ions in the coma of P/Giacobini-Zinner

Sep 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986a%26a...166l...1g&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 166, no. 1-2, Sept. 1986, p. L1-L4. SNSF-NASA-supported research.

Astronomy and Astrophysics

Astrophysics

12

Giacobini-Zinner Comet, Metal Ions, Abundance, Coma, Comet Nuclei, Interplanetary Medium, Sputtering

Scientific paper

During the crossing of the ICE spacecraft through the coma of the comet Giacobini-Zinner, ions with a mass/charge ratio 24±1 were unexpectedly found. Na+ and/or Mg+ would fit into this mass range. The authors discuss processes that could lead to high metal ion abundances in cometary comae and conclude that evaporation or sputtering from silicate grains are not likely to be responsible. A remaining possibility is the occurrence of alkali metals in the icy phase as a result of either cometary differentiation or co-condensation of these elements with the icy component prior to the accretion of cometary bodies.

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