Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982ncgb.conf..257z&link_type=abstract
IN: Workshop on the Need for Coordinated Ground-Based Observations of Halley's Comet, Paris, France, April 29, 30, 1982, Proceed
Astronomy and Astrophysics
Astronomy
Astronomical Photometry, Cometary Atmospheres, Cosmic Dust, Halley'S Comet, Light Scattering, Polarimetry, Giotto Mission, Physical Properties
Scientific paper
It is pointed out that the scattering features of dust particles are closely related to their physical properties, taking into account shape, structure, size, and material. Scattering measurements provide also a useful basis for the study of cometary dust. Suitable data are available for several comets. However, there are contradictions regarding some aspects of the data, in particular, concerning the color dependence of polarization. The present investigation has the objective to consider the employment of ground based photopolarimetry of comet Halley in conjunction with space observations for the resolution of still existing ambiguities. Attention is given to a comparison of observations, observational conditions during Halley's passage, and models of cometary grains.
Giese R. H.
Zerull R. H.
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