Communication Dans Un Congrès Année : 2002

Physical properties of dust in comets, as compared to those of asteroidal and interplanetary material

Résumé

Information about the physical properties of cosmic dust is mainly provided by remote observations. Results about phase angle and wavelength dependence of the polarization of dust in comets are updated, and the phase angle dependence of the (positive) rate of increase of the wavelength dependence is estimated in the visible domain. The same approach leads to a negative rate of increase for S-type asteroids (linear between 30° and 70° for Toutatis), and a possibly positive rate for C-type asteroids. Although observations are still missing, these results provide new constraints for the numerical models and laboratory measurements, including measurements on aggregating dust particles that are anticipated on board the ISS.

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Dates et versions

hal-03809327 , version 1 (10-10-2022)

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Anny Chantal Levasseur-Regourd, Edith Hadamcik, Patrick Gaulme. Physical properties of dust in comets, as compared to those of asteroidal and interplanetary material. Proceedings of Asteroids, Comets, Meteors - ACM 2002. ESA SP-500, ESA, Jul 2002, Berlin, Germany. pp.541-544. ⟨hal-03809327⟩
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