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We have started the study on the specification of filters and grisms for SPICA Mid-Infrared Camera and Spectrometer (MCS; Kataza et al. 2012) Wide Field Camera (WFC) within the framework of MCS Filter Working Group (FWG). The FWG activity aims to obtain the baseline specification of imaging filters and grisms optimized for the maximum science output in any scientific fields of “extragalactic science”, “ISM science” and “planetary science” by taking account of the technical constraints. The resultant baseline specifications will be opened to wider science members of SPICA project and FWG will get a more effective baseline set of filters and grisms for WFC by reflecting the feedback received. In this article, the latest progress report on the specification of filters and grisms for WFC studied by the MCS FWG is given., Meeting Information: SPICA Science Conference from Exoplanets to Distant Galaxies: SPICA's New Window on the Cool Universe (June 18-21, 2013. Ito Hall, the University of Tokyo), Bunkyou-ku, Tokyo, Japan, Physical characteristics: Original contains color illustrations, 形態: カラー図版あり

FPC-S is a back up of the fine guidance camera, but is usable for the scientific observation. FPC-S is optimized to observe the spectrum and fluctuation of near-infrared background. One of main scientific targets is to search for the light of first stars of the universe and to delineate the star formation history and structure evolution during the dark age of the universe. The expected performance and its scientific significance is presented., Meeting Information: SPICA Science Conference from Exoplanets to Distant Galaxies: SPICA's New Window on the Cool Universe (June 18-21, 2013. Ito Hall, the University of Tokyo), Bunkyou-ku, Tokyo, Japan, Number of authors: 11, Physical characteristics: Original contains color illustrations, 著者人数: 11名, 形態: カラー図版あり

赤外線天文衛星「あかり」に搭載された近・中間赤外線カメラInfraRed Camera (IRC) の分光データを用いて, 波長範囲1.8-5.3 μm ( λ/Δλ- 20) における面輝度分光カタログを作成し公開した. 赤外線面輝度の分光カタログは過去にほとんど例がなく, この規模の面輝度分光カタログは世界初である. このカタログは「あかり」のコールドミッション(液体ヘリウム枯渇前) 中に撮られた地球光コンタミを含まない全278 点の面輝度スペクトルデータを含み, データ点は黄道座標・銀河座標によらず全天に広く分布している. 面輝度に影響を及ぼす恐れのある点源(K バンドで19等以下) は全て除外しているため, 銀河系内の星の寄与は無視できる. また, 本カタログを用いて赤外線面輝度を, 黄道光(ZL), 銀河系内拡散光(DGL), 銀河系外背景光(EBL) の3 成分に分離する事に成功し, さらに各成分ごとの解析から新たな知見が得られた. 本論文では, 「あかり」による赤外線面輝度分光解析に特化したデータ解析手法と, 赤外線面輝度の成分分離の手法について述べる., We constructed a spectral catalog of diffuse radiation of the sky obtained by the InfraRed Camera (IRC) onboard AKARI. There is no precedent for spectral catalogs of the infrared diffuse radiation, thus this is the first infrared spectral catalog of the diffuse radiation in the world. This catalog contains the 278 low-resolution ( λ/Δλ- 20) near-infrared (1.8-5.3 μm) spectra of diffuse sky covering a wide range of galactic and ecliptic latitudes before the exhaustion of liquid-helium. Advanced reduction methods specialized for the slit spectroscopy of diffuse sky spectra have been developed for constructing the spectral catalog. Point sources brighter than mK (Vega)=19 were detected on the slit and masked for deriving the diffuse spectrum, and the brightness due to unresolved Galactic stars under this detection limit is negligible. Using this catalog, the diffuse radiation was successfully separated into three components of the zodiacal light (ZL), the diffuse Galactic light (DGL), and the extragalactic background light (EBL). In this paper, the specialized reduction methods for AKARI infrared diffuse radiation, and the method of component separation of the near-infrared diffuse spectrum are described., 形態: カラー図版あり, Physical characteristics: Original contains color illustrations