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Simulations of Effects of Nanophase Iron Space Weather Products on Lunar Regolith Reflectance Spectra

AuthorsEscobar Cerezo, Jesús; Penttilä, A.; Kohout, T.; Muñoz, Olga ; Moreno, Fernando ; Muinonen, K.
KeywordsComets: general
Methods: numerical
Minor planets
Asteroids: general
Planets and satellites: surfaces
Issue Date2018
PublisherIOP Publishing
CitationAstrophysical Journal 853(1): 71 (2018)
AbstractLunar soil spectra differ from pulverized lunar rocks spectra by reddening and darkening effects, and shallower absorption bands. These effects have been described in the past as a consequence of space weathering. In this work, we focus on the effects of nanophase iron (npFe) inclusions on the experimental reflectance spectra of lunar regolith particles. The reflectance spectra are computed using SIRIS3, a code that combines ray optics with radiative-transfer modeling to simulate light scattering by different types of scatterers. The imaginary part of the refractive index as a function of wavelength of immature lunar soil is derived by comparison with the measured spectra of the corresponding material. Furthermore, the effect of adding nanophase iron inclusions on the reflectance spectra is studied. The computed spectra qualitatively reproduce the observed effects of space weathered lunar regolith. © 2018. The American Astronomical Society. All
Publisher version (URL)http://dx.doi.org/10.3847/1538-4357/aaa24d
Identifiersdoi: 10.3847/1538-4357/aaa24d
e-issn: 1538-4357
issn: 0004-637X
Appears in Collections:(IAA) Artículos
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