Space weathering and the interpretation of asteroid reflectance spectra

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Spectral reflectance properties of carbonaceous chondrites: 1. CI chondrites (2012, background): “Differences may include changes in the mechanical strength of various materials with temperature, and the relative importance of various spectral modification processes that are collectively termed ‘‘space weathering’’ and which are as yet incompletely understood (e.g., Clark et al., 2002; Gaffey, 2”
Dawn; the Vesta–HED connection; and the geologic context for eucrites, diogenites, and howardites (2013, background): “The inhibition of npFe0 production on Vesta, relative to the Moon and Itokawa, presumably results from some combination of the following (Gaffey 2010; Pieters et al. 2012): (1) Vesta receives a lower solar flux; (2) impact velocities in the asteroid belt are lower; (3) native iron and FeS that…”
Phase reddening on near-Earth asteroids: Implications for mineralogical analysis, space weathering and taxonomic classification (2012, background): “Spectral slope variations can be interpreted as surface heterogeneities caused by different factors such as metal content, particle size and space weathering (Gaffey et al., 1993; Clark et al., 2002a; Gaffey, 2010).”