Low-Resolution Spectrum of the Diffuse Galactic Light and 3.3 um PAH emission with AKARI InfraRed Camera

Abstract

We first obtained the spectrum of the diffuse Galactic light (DGL) at general interstellar space in 1.8-5.3 um wavelength region with the low-resolution prism spectroscopy mode of the AKARI Infra-Red Camera (IRC) NIR channel. The 3.3 um PAH band is detected in the DGL spectrum at Galactic latitude |b| < 15 deg, and its correlations with the Galactic dust and gas are confirmed. The correlation between the 3.3 um PAH band and the thermal emission from the Galactic dust is expressed not by a simple linear correlation but by a relation with extinction. Using this correlation, the spectral shape of DGL at optically thin region (5 deg < |b| < 15 deg) was derived as a template spectrum. Assuming that the spectral shape of this template spectrum is uniform at any position, DGL spectrum can be estimated by scaling this template spectrum using the correlation between the 3.3 um PAH band and the thermal emission from the Galactic dust.

7 pages, 5 figures, accepted by Publications of the Astronomical Society of Japan (PASJ)

References in corpus (7)

• Spitzer/IRAC and ISOCAM/CVF insights on the origin of the Near to Mid-IR Galactic diffuse emission
• The Resolved NIR Extragalactic Background
• The Resolved Near-Infrared Extragalactic Background
• Extended Red Emission in High-Galactic Latitude Interstellar Clouds
• Low-Resolution Spectrum of the Extragalactic Background Light with AKARI InfraRed Camera
• The 1 um discontinuity in the Extragalactic Background Light spectrum: an artefact of foreground subtraction
• Low-Resolution Spectrum of the Zodiacal Light with AKARI InfraRed Camera

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