Author： Fornasier S. Lazzarin M.
Publisher： Academic Press
ISSN： 0019-1035
Source： Icarus, Vol.152, Iss.1, 2001-07, pp. : 127-133
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Abstract
Visible spectra of five E-type asteroids have been obtained at the European Southern Observatory with the 1.5-m telescope. Three of these objects reveal a peculiar absorption band centered around 0.5μm whose origin is not easily attributable.A possible source might be troilite, which is also a known constituent of aubrite meteorites, as it has a spectral behavior consistent with the visible and near infrared spectrum of these objects and may be responsible not only for the 0.5-μm band but probably also for the 3-μm band observed on the surface of these objects. We report in this paper the results of our investigation and a discussion regarding the possible composition of E-type asteroids.
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