CCD Polarimetric Imaging Of Comet Hale-Bopp (C/1995 O1) |
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| Authors: | E Hadamcik A C Levassuer-Regourd J B Renard |
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| Institution: | (1) Université Paris 6/Aéronomie CNRS, B.P. 3, 91371 Verrières, France;(2) LPCE/CNRS, Orléans, France |
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| Abstract: | Polarimetric observations of the light scattered by dust have been carried out at Pic-du-Midi Observatory with the 2 m telescope
in June and September–October 1996, and at Haute-Provence Observatory with the 0.80 m telescope in April 1997. They cover
a total number of 11 nights and a large (6.9°–47.7°) phase angle range. The spatial resolution allows to underline structures
in the coma, as well in the brightness images as in the polarization maps, with a correlation between the regions of bright
structures and the regions of higher polarization. A clear difference appears between the sunward and antisunward side, with
higher polarization on the antisunward side. The phase angle coverage allows us to obtain a polarimetric phase curve for the
whole coma and to compare it with other cometary phase curves. The degree of polarization is higher for Hale-Bopp than for
the comets previously observed.
This revised version was published online in July 2006 with corrections to the Cover Date. |
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| Keywords: | Comet Hale-Bopp cometary dust scattering polarization |
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