JAXA Special Publication: The Cosmic Wheel and the Legacy of the AKARI archive: from galaxies and stars to planets and life
巻
JAXA-SP-17-009E
ページ
73 - 80
発行年
2018-03-09
会議概要（会議名, 開催地, 会期, 主催者等）
第4回「あかり」国際会議 (2017年10月17-20日. 東京大学), 文京区, 東京
会議概要（会議名, 開催地, 会期, 主催者等）（英）
The 4th AKARI International Conference: The Cosmic Wheel and the Legacy of the AKARI archive: from galaxies and stars to planets and life (October 17-20, 2017. The University of Tokyo), Bunkyo-ku, Tokyo, Japan
抄録（英）
Many asteroids larger than approximately 100 km in diameter are thought to be primordial bodies that have avoided catastrophic disruption by collisions over their 4 Gy-long histories. Understanding their compositions can thus reveal clues about their formation and constrain planet formation and Solar System early dynamical evolution models. However, remote observations are limited to their surfaces and spectroscopic data are costly; furthermore, meteorite spectral association cannot unambiguously constrain the composition of primitive asteroids that do not show any distinct spectral features. Thermal infrared data taken by surveys like the AKARI IRC all-sky survey have provided the community with information about few thousands of asteroids, enabling the computation of sizes and albedos in large numbers. Sizes are an important prerequisite to infer density, and albedos are indicative of composition. When asteroid shapes and rotational states are known, thermal infrared data can help constrain more detailed thermal properties. Here I provide an overview of how AKARI data are being exploited in this context and illustrate their importance in the study of asteroids, including an outlook into the future.
内容記述
形態: カラー図版あり
内容記述（英）
Physical characteristics: Original contains color illustrations
Asteroids and the Solar System: insights from the thermal infrared
AA1730026010.pdf
(574.98KB)
