炭素質コンドライトを基準に用いたはやぶさ2近赤外分光計(NIRS3)の反射スペクトル評価法 An Evaluation method of reflectance spectra to be obtained by Hayabusa2 Near-Infrared Spectrometer (NIRS3) based on laboratory measurements of carbonaceous chondrites

Access this Article

Abstract

著者所属: 日本原子力研究開発機構(JAEA)

We have conducted ground-based performance evaluation tests of the Near-Infrared Spectrometer (NIRS3) onboard Hayabusa2 spacecraft and established a method for evaluating its measured reflectance spectra. Reflectance spectra of nine powdered carbonaceous chondrite samples were measured by both NIRS3 and a FT-IR spectrometer. Since raw data obtained by NIRS3 had considerable spectral distortion caused by systematic offsets in sensitivity of individual pixels, we have established two methods for correcting the NIRS3 data by comparing them with the corresponding FT-IR data. In order to characterize the absorption bands in NIRS3 spectra, the depth of each band component Dlambda is defined for each wavelength lambda (mum). Reflectance spectra of asteroid Ryugu, the target asteroid of Hayabusa2, to be recorded by the NIRS3 are expected to reveal the characteristics of the surface materials by using the evaluation technique.

Journal

  • Earth, Planets and Space (Internet)

    Earth, Planets and Space (Internet) 69(1), 120\_1-120\_12, 2017-09

    Springer

Codes

  • NII Article ID (NAID)
    120006472642
  • Text Lang
    ENG
  • Article Type
    journal article
  • ISSN
    1343-8832
  • Data Source
    IR 
Page Top