Journal Article

Spectral properties of (854) Frostia, (1333) Cevenola and (3623) Chaplin

M. Birlan, D. A. Nedelcu, P. Descamps, J. Berthier, F. Marchis, S. Merouane and M. Popescu

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 415, issue 1, pages 587-595
Published in print July 2011 | ISSN: 0035-8711
Published online July 2011 | e-ISSN: 1365-2966 | DOI: http://dx.doi.org/10.1111/j.1365-2966.2011.18740.x
Spectral properties of (854) Frostia, (1333) Cevenola and (3623) Chaplin

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Near-infrared spectroscopy can play a key role in establishing the mineralogical composition of objects and supporting other physical data obtained by complementary observational techniques such as adaptive optics, radar and photometry. The objective of our survey was asteroids that present large variations in their light curves. We report observations for asteroids (854) Frostia, (1333) Cevenola and (3623) Chaplin carried out in the 0.8–2.5 μm spectral range using SpeX/Infrared Telescope Facility (IRTF) in LowRes mode. The spectral modelling of these asteroids gives new insights into these peculiar objects in the main belt. (854) Frostia is a V-type asteroid, and its spectral properties are similar to those of basalts. The most probable mineralogical solution Wo8Fs43En49 was calculated for Frostia. (1333) Cevenola was estimated to have an Sq spectral type, in agreement with its membership of the Eunomia family. (3623) Chaplin is an S-type asteroid, in agreement with the taxonomic type of the Koronis family.

Keywords: techniques: spectroscopic; minor planets, asteroids: individual: (854) Frostia; minor planets, asteroids: individual: (1333) Cevenola; minor planets, asteroids: individual: (3623) Chaplin

Journal Article.  6396 words.  Illustrated.

Subjects: Astronomy and Astrophysics

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