کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1781481 1022283 2012 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
(21) Lutetia spectrophotometry from Rosetta-OSIRIS images and comparison to ground-based observations
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات فیزیک زمین (ژئو فیزیک)
پیش نمایش صفحه اول مقاله
(21) Lutetia spectrophotometry from Rosetta-OSIRIS images and comparison to ground-based observations
چکیده انگلیسی

Here we present some preliminary results on surface variegation found on (21) Lutetia from ROSETTA-OSIRIS images acquired on 2010-07-10. The spectrophotometry obtained by means of the two cameras NAC and WAC (Narrow and Wide Angle Cameras) is consistent with ground based observations, and does not show surface diversity above the data error bars. The blue and UV images (shortward 500 nm) may, however, indicate a variegation of the optical properties of the asteroid surface on the Baetica region (Sierks et al., 2011). We also speculate on the contribution due to different illumination and to different ground properties (composition or, more probably, grain size diversity). In particular a correlation with geologic units independently defined by Massironi et al. (2012) is evident, suggesting that the variegation of the ground optical properties is likely to be real.


► Preliminary analysis of surface variegation on Lutetia from OSIRIS images.
► NAC and WAC spectrophotometry is consistent with ground based observations.
► Indications of optical properties variegation in Blue and UV images.
► Illumination and composition contribution separated only at a zero level.
► Correlation between geological units and variegated regions found.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Planetary and Space Science - Volume 66, Issue 1, June 2012, Pages 43–53
نویسندگان
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