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EnglishWe present a general and significant relation between the spectral slope of silicate-rich asteroids (both main-belt and near-Earth asteroids) and the exposure to space weathering, computed taking into account the age and the distance from the Sun. We find strong evidence for the existence of a slope-distance relation that may identify the dominant space-weathering processes as Sun-related. In turn, the age estimates depend on various parameters and in particular on the effectiveness of the Yarkovsky-driven orbital mobility. We show that values of the parameters of the Yarkovsky effect consistent with recent experimental measurements can lead to a unique slope-age relation for main-belt and near-Earth asteroids.
| Autori interni: | |
| Autori: | Marchi S; Paolicchi P; Lazzarin M; Magrin S |
| Titolo: | A general spectral slope-exposure relation for S-type main belt and near-earth asteroids |
| Anno del prodotto: | 2006 |
| Digital Object Identifier (DOI): | 10.1086/498721 |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
File in questo prodotto:
http://hdl.handle.net/11568/107933
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