Physics
Scientific paper
Aug 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998p%26ss...46..937p&link_type=abstract
Planetary and Space Science, Volume 46, Issue 8, p. 937-943.
Physics
5
Scientific paper
We have measured single-particle albedos for several chondrite and achondrite meteorites and for carbonaceous material. We have introduced a new, relative method for measuring the albedo, including a new method for evaluating the particle cross-section. We determined albedos of 0.50+/-0.25 for ordinary chondrite, 0.15+/-0.02 for C2 carbonaceous chondrite, 0.64+/-0.13 for achondritic shergottite, 0.33+/-0.14 for enstatite chondrite meteorites, and 0.21+/-0.03 for carbon particles. Making use of the measured single-particle albedos, we have predicted geometric albedos for atmosphereless solar system bodies covered with regoliths of such particles. The geometric albedos are consistent with the values derived for C- and S-type asteroids in earlier works. However, for enstatite chondrite, the geometric albedo is much lower than that accepted for E-type asteroids. The predicted geometric albedos are 0.04-0.07 for C2 chondritic material and 0.13-0.24 for chondritic material. These ranges describe the usually accepted values for C- and S-type asteroids. Our results put important constraints on the radiative transfer models for the regoliths of asteroids and comets.
Muinonen Karri
Nousiainen Timo
Peltoniemi Jouni I.
Piironen Jukka
Roth Sharon
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