Asteroidal Polarimetry, As Compared To Cometary Polarimetry; The Case Of 21 Lutetia

Details Asteroidal Polarimetry, As Compared To Cometary Polarimetry; The Case Of 21 Lutetia Asteroidal Polarimetry, As Compared To Cometary Polarimetry; The Case Of 21 Lutetia

Oct 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010dps....42.3904l&link_type=abstract

American Astronomical Society, DPS meeting #42, #39.04; Bulletin of the American Astronomical Society, Vol. 42, p.1033

Other

Scientific paper

Polarimetric measurements provide clues to the classification of solar system objects and to their local properties, through experimental and numerical simulations. Asteroidal polarimetry originates in solar light scattered by an irregular surface, as opposed to cometary polarimetry that comes from scattering by a low-density dust cloud. In both cases, polarimetric phase curves are somehow comparable, with key parameters such as the minimum in polarization, the inversion angle, the maximum in polarization, and their wavelength dependence. Differences between observations obtained at similar phase angles and wavelengths may be attributed to local changes, e.g. variagation of the surface revealed by the rotation for asteroidal polarimetry and existence of halos and jet features with different dust particles for cometary polarimetry.
New observations of 21 Lutetia have been recently obtained in three colors and interpreted through laboratory simulations (1); they will be compared with other observations (2) and discussed in relation with the surface images obtained during the Rosetta flyby on 10 July 2010. Also, conclusions about the properties of dust in the coma of 67P/Churyumov-Gerasimenko, the rendezvous target of the Rosetta mission, as inferred from polarimetric observations, will be summarized (3,4).
Support from CNES is acknowledged.
(1) Hadamcik et al., ELS XII (K. Muinonen et al. eds., Helsinki University Print), 70-73, 2010
(2) Belskaya et al., A&A, 515, A29, 2010
(3) Levasseur-Regourd et al., IAU Symposium 263, 259-262, 2010
(4) Hadamcik et al., A&A, in press, 2010

Affiliated with

Also associated with

No associations

Rating

Asteroidal Polarimetry, As Compared To Cometary Polarimetry; The Case Of 21 Lutetia does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Asteroidal Polarimetry, As Compared To Cometary Polarimetry; The Case Of 21 Lutetia, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Asteroidal Polarimetry, As Compared To Cometary Polarimetry; The Case Of 21 Lutetia will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1229063