Figure 2: Near-infrared Spectra of Asteroids Obtained from the AKARI Observations (IMAGE)

Kobe University

Figure 2: Near-infrared Spectra of Asteroids Obtained from the AKARI Observations

Caption

This shows 6 examples for both C-type and S-type asteroids. You can clearly see the absorption at wavelengths of around 2.7 micrometers (indicated by the green arrows) attributed to hydrated minerals. You can also see signatures of water ice or ammonia-rich material at around 3.1 micrometers (indicated by the blue arrows). The data shown in this figure are the reflected spectra of the sunlight by the surface of asteroids.

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Kobe University

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