JAXA Repository / AIREX 未来へ続く、宙(そら)への英知
titleAsteroids and the Solar System: insights from the thermal infrared
Author(eng)AliLagoa, Victor
Author Affiliation(eng)Max Planck Institute for Extraterrestrial Physics
Issue Date2018-03-09
PublisherJapan Aerospace Exploration Agency (JAXA)
Publication titleJAXA Special Publication: The Cosmic Wheel and the Legacy of the AKARI archive: from galaxies and stars to planets and life
Start page73
End page80
Publication date2018-03-09
AbstractMany 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.
DescriptionMeeting Information: 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
Physical characteristics: Original contains color illustrations
会議情報: 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
形態: カラー図版あり
KeywordsSolar System and planetary formation
Document TypeConference Paper
JAXA Category特別資料
NASA Subject CategoryAstronomy
Report NoJAXA-SP-17-009E

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