MEASUREMENTS of the MEAN DIFFUSE GALACTIC LIGHT SPECTRUM in the 0.95-1.65 μm BAND from CIBER

T. Arai, S. Matsuura, J. Bock, A. Cooray, M. G. Kim, A. Lanz, D. H. Lee, H. M. Lee, K. Sano, J. Smidt, T. Matsumoto, T. Nakagawa, Y. Onishi, P. Korngut, M. Shirahata, K. Tsumura, M. Zemcov

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18 Citations (Scopus)

Abstract

We report measurements of the diffuse galactic light (DGL) spectrum in the near-infrared, spanning the wavelength range 0.95-1.65 μm by the Cosmic Infrared Background ExpeRiment. Using the low-resolution spectrometer calibrated for absolute spectro-photometry, we acquired long-slit spectral images of the total diffuse sky brightness toward six high-latitude fields spread over four sounding rocket flights. To separate the DGL spectrum from the total sky brightness, we correlated the spectral images with a 100 μm intensity map, which traces the dust column density in optically thin regions. The measured DGL spectrum shows no resolved features and is consistent with other DGL measurements in the optical and at near-infrared wavelengths longer than 1.8 μm. Our result implies that the continuum is consistently reproduced by models of scattered starlight in the Rayleigh scattering regime with a few large grains.

Original languageEnglish
Article number69
JournalAstrophysical Journal
Volume806
Issue number1
DOIs
Publication statusPublished - 2015 Jun 10

Keywords

  • ISM: general
  • dust, extinction
  • scattering

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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    Arai, T., Matsuura, S., Bock, J., Cooray, A., Kim, M. G., Lanz, A., Lee, D. H., Lee, H. M., Sano, K., Smidt, J., Matsumoto, T., Nakagawa, T., Onishi, Y., Korngut, P., Shirahata, M., Tsumura, K., & Zemcov, M. (2015). MEASUREMENTS of the MEAN DIFFUSE GALACTIC LIGHT SPECTRUM in the 0.95-1.65 μm BAND from CIBER. Astrophysical Journal, 806(1), [69]. https://doi.org/10.1088/0004-637X/806/1/69