Component Separation of the Near-Infrared Diffuse Spectrum from the AKARI Archive Data

Bibliographic Information

Other Title
  • あかりアーカイブデータを用いた近赤外線面輝度スペクトルの成分分離

Search this article

Abstract

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.

Journal

Related Projects

See more

Keywords

Details 詳細情報について

  • CRID
    1570291227903909504
  • NII Article ID
    110009896979
  • NII Book ID
    AA1192675X
  • ISSN
    13491113
  • Text Lang
    ja
  • Data Source
    • CiNii Articles
    • KAKEN

Report a problem

Back to top