Bibcode
de León, J.; Duffard, R.; Licandro, J.; Lazzaro, D.
Referencia bibliográfica
Astronomy and Astrophysics, v.422, p.L59-L62 (2004)
Fecha de publicación:
7
2004
Revista
Número de citas
18
Número de citas referidas
18
Descripción
We have obtained visible and near-infrared reflectance spectra of
asteroid (1951) Lick. According to its spectral characteristics in the
visible region, this object has been classified as an A-type asteroid by
Bus & Binzel (cite{bus2002b}). Here we present a mineralogical
analysis of the reflectance spectrum obtained for this object. We
compute several parameters that are extracted from the spectrum of the
asteroid and that give relevant information about its mineralogical
composition, using the method defined by Gaffey et al.
(cite{gaffey1993}). We also present results obtained through the fit to
the absorption band associated to the pressence of olivine using the
Modified Gaussian Model (MGM) method developed by Sunshine et al.
(cite{sunshi1990}). Our results indicate that (1951) Lick is an almost
pure olivine. The composition of olivine on the surface of Lick is
estimated to be about Fo90±10 (low-iron content).
Based on observations made with the Nordic Optical Telescope, operated
on the island of La Palma jointly by Denmark, Finland, Iceland, Norway,
and Sweden, and on observations made with the Italian Telescopio
Nazionale Galileo (TNG) operated on the island of La Palma by the Centro
Galileo Galilei of the INAF (Instituto Nazionale di Astrofisica), both
telescopes located at the Spanish ``Observatorio del Roque de los
Muchachos'' of the Instituto de Astrofísica de Canarias.