JAXA Repository / AIREX 未来へ続く、宙(そら)への英知
titleGlobal and small-scale structure of the zodiacal dust cloud observed with AKARI
Author(jpn)大坪, 貴文
Author(eng)Otsubo, Takafumi
Author Affiliation(jpn)宇宙航空研究開発機構宇宙科学研究所(JAXA)(ISAS)
Author Affiliation(eng)Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA)(ISAS)
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 page81
End page87
Publication date2018-03-09
AbstractThe Solar System is filled with interplanetary dust and its thermal emission dominates the diffuse radiation in the mid-to far-infrared wavelength region. After the advent of infrared astronomical satellites, it was found that there are numerous small-scale structures in the zodiacal emission distribution, including dust-band pairs, a circumsolar ring, and cometary trails, in addition to a smooth background distribution. The dust-band pairs are well studied thus far and are now considered to be associated with disruptive events of asteroid families in the main asteroid belt, which would have occurred within the last 10 Myrs. AKARI detects the circumsolar ring and zodiacal dust-band structures at 9, 18, 65 and 90 micrometers bands. Furthermore, in the AKARI far-infrared map, partial young dust-band candidates can be seen, which are corresponding to the possible bands suggested by the IRAS observation. These small-scale structures are important to investigate the recent (less than 1 Myr) evolution of the dust in the Solar System. Here I summarize the current understanding of the zodiacal emission distribution. I will present the results of the AKARI mid- and far-infrared all-sky maps and spectroscopic observations for the global and small-scale structures of the zodiacal dust cloud, and discuss the evolution of the zodiacal dust cloud.
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
Keywordszodiacal emission; interplanetary dust; comets; asteroids
Document TypeConference Paper
JAXA Category特別資料
NASA Subject CategoryAstronomy
Report NoJAXA-SP-17-009E

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