Polarimetry Of Comet Hale-Bopp: Linear And Circular Polarization, Stellar Occultation

Details Polarimetry Of Comet Hale-Bopp: Linear And Circular Polarization, Stellar Occultation Polarimetry Of Comet Hale-Bopp: Linear And Circular Polarization, Stellar Occultation

Jul 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997em%26p...78..381r&link_type=abstract

Earth, Moon, and Planets, v. 78, Issue 1/3, p. 381-386 (1997).

Astronomy and Astrophysics

Astrophysics

17

Comets, Comet Hale-Bopp, Polarization, Grains

Scientific paper

Comet Hale-Bopp was observed with the 2.6-m and 1.25-m telescopes of the Crimean Astrophysical Observatory on March 9 and 11, 1997. We determined the linear and circular polarization in the coma. For the dust coma, the linear polarization varied from 7.8% to 12.4%. The degree of circular polarization was always negative and did not exceed 0.3% with an accuracy of ±0.04% on average. The passage of a bright star through the cometary coma was monitored with polarimetry and photometry. The wavelength dependence and spatial variations of optical thickness of dust are obtained from the stellar occultation.

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