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The Ch-class Asteroids: Connecting a Visible Taxonomic Class to a 3 µm Band Shape
Emery, Joshua P.; Rivkin, Andrew S.; Thomas, Cristina A. +1 more
Asteroids belonging to the Ch spectral taxonomic class are defined by the presence of an absorption near 0.7 µm, which is interpreted as due to Fe-bearing phyllosilicates. Phyllosilicates also cause strong absorptions in the 3 µm region, as do other hydrated and hydroxylated minerals and H2O ice. Over the past decade, spectr…
Near-Infrared Spectra of High-Albedo Outer Main-Belt Asteroids
Shirahata, Mai; Hasegawa, Sunao; Usui, Fumihiko +4 more
Most outer main-belt asteroids have low albedos because of their carbonaceouslike bodies. However, infrared satellite surveys have revealed that some asteroids have high albedos, which may suggest the presence of unusual surface minerals for those primitive objects. We present new near-infrared (1.1-2.5 µm) spectra of four outer main-belt as…