Low-Resolution Spectrum of the Zodiacal Light with the AKARI Infra Red Camera

被引：15
|
作者：
Tsumura, Kohji [1 ]
Matsumoto, Toshio [1 ,2 ]
Matsuura, Shuji [1 ]
Pyo, Jeonghyun [3 ]
Sakon, Itsuki [4 ]
Wada, Takehiko [1 ]
机构：
[1] Japan Aerosp Explorat Agcy, Inst Space & Astronaut Sci, Dept Space Astron & Astrophys, Chuo Ku, Sagamihara, Kanagawa 2525210, Japan
[2] Acad Sinica, Inst Astron & Astrophys, Taipei 10617, Taiwan
[3] Korea Astron & Space Sci Inst, Daejeong 305348, South Korea
[4] Univ Tokyo, Grad Sch Sci, Dept Astron, Bunkyo Ku, Tokyo 1130033, Japan
来源：
PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN | 2013年 / 65卷 / 06期
基金：
日本学术振兴会;
关键词：
catalogs; infrared: solar system; interplanetary medium; methods: data analysis; solar system: general; EXTRAGALACTIC BACKGROUND LIGHT; INTERPLANETARY DUST CLOUD; SPITZER-SPACE-TELESCOPE; MIDINFRARED SPECTRUM; ARRAY CAMERA; EXPERIMENT SEARCH; COMET; 17P/HOLMES; IRTS OBSERVATION; EMISSION; SKY;
D O I：
10.1093/pasj/65.6.119
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We present near- and mid-infrared zodiacal light spectra obtained with the AKARI Infra-Red Camera (IRC). A catalog of 278 spectra of the diffuse sky covering a wide range of Galactic and ecliptic latitudes was constructed. The wavelength range of this catalog is 1.8-5.3 mu m with a wavelength resolution of lambda/Delta lambda similar to 20. Advanced reduction methods specialized for the slit spectroscopy of diffuse sky spectra have been developed for constructing the spectral catalog. Based on a comparison analysis of spectra collected in different seasons and ecliptic latitudes, we confirmed that the spectral shape of the scattered component and the thermal emission component of the zodiacal light in our wavelength range does not show any dependence on location and time, but the relative brightness between them varies with location. We also confirmed that the color temperature of the zodiacal emission at 3-5 mu m is 300 +/- 10K at any ecliptic latitude. This emission is expected to originate from sub-micron dust particles in interplanetary space.
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页数：13
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