Coma expansion and photometry of comet Bowell (1980b)

Details Coma expansion and photometry of comet Bowell (1980b) Coma expansion and photometry of comet Bowell (1980b)

Nov 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984icar...60..373j&link_type=abstract

Icarus (ISSN 0019-1035), vol. 60, Nov. 1984, p. 373-385.

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13

Astronomical Photometry, Coma, Comet Nuclei, Expansion, Ice, Sublimation

Scientific paper

Optical observations obtained for the comet Bowell indicate an expansion of the solid grain coma that is two orders of magnitude slower than the local gas sound speed, and suggests that the gas is not responsible for stripping the grains from the nucleus. The hypothesis of 'electrostatic snap-off' is tentatively advanced in order to account for the ejection of the grains. Evidence against the production of the grain coma by equilibrium sublimation of the nucleus is provided by broadband (J) photometric observations. The present observations, which suggest that water ice does not conrol either the optical morphology or the near-IR photometric behavior of this comet, are contrasted with high OH production rates.

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