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Astron. Astrophys. Suppl. Ser. 134, 463-471

A spectroscopic study of the Themis family[*] [*][*]

M. Florczak1,2 - D. Lazzaro1 - T. Mothé-Diniz1 - C.A. Angeli1 - A.S. Betzler1

1 - CNPq/Observatório Nacional Depto. Astrofísica, 20921-400 Rio de Janeiro, Brazil
2 - CEFET, Depto. Física, 80000 Curitiba, Brazil

Received July 3; accepted September 4, 1998


We present spectroscopic observations of 36 asteroids, members of the Themis family. These observations were carried on at the European Southern Observatory in the wavelength range 4900 - 9200 Å. Most of the objects present a spectra similar to C-type asteroids and some of them present indicative of aqueous alteration. We discuss the implications of these results on the formation and evolution of this family.

Key words: minor planets, asteroids

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