Polarimetry of molecular bands in Comets P/Halley and Hartley-Good

Details Polarimetry of molecular bands in Comets P/Halley and Hartley-Good Polarimetry of molecular bands in Comets P/Halley and Hartley-Good

Dec 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986esasp.250a.571l&link_type=abstract

In ESA Proceedings of the 20th ESLAB Symposium on the Exploration of Halley's Comet. Volume 1: Plasma and Gas p 571-576 (SEE N87

Physics

9

Halley'S Comet, Molecular Spectra, Polarimetry, Spectral Bands, Phase Shift, Polarization (Waves), Radicals

Scientific paper

Measurements of the linear polarization of molecular bands in comets P/Halley and Hartley-Good are presented. The measured bands are the C2 Swan band at 5140 Å, the CN 3880 Å band, the C3 4060 Å band and the OH 3090 Å band. The phase angle dependance of the polarization of C2, C3 and CN is in good agreement with theory. However the polarization of OH is found 5 time smaller than foreseen. The direction of polarization of C2, C3 and OH is usually perpendicular to the scattering plane, though some measurements are parallel to it. For CN half the measures shows significant deviations from the perpendicular to the scattering plane.

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