Near infrared reflectance spectra: Applications to problems in asteroid-meteorite relationships

Details Near infrared reflectance spectra: Applications to problems in asteroid-meteorite relationships Near infrared reflectance spectra: Applications to problems in asteroid-meteorite relationships

Dec 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992acm..proc..413m&link_type=abstract

In Lunar and Planetary Inst., Asteroids, Comets, Meteors 1991 p 413-416 (SEE N93-19113 06-90)

Mathematics

Logic

Asteroid Belts, Asteroids, Chondrites, Infrared Spectra, Near Infrared Radiation, Spectral Reflectance, Chemical Composition, Meteorites, Mineralogy, Taxonomy

Scientific paper

An observing program designed to search for evidence of ordinary chondrite parent bodies near the 3:1 Kirkwood Gap was carried out in 1985 and 1986. Studies by Wisdom (1985), Wetherill (1985), and subsequent work by Milani et al. (1989) indicate that the 3:1 Kirkwood gap is the most probable source region for the majority of ordinary chondrite meteorites. The diversity of the reflectance spectra among this small data set is surprising. Early work by Gaffey and McCord (1978) showed that the inner region of the main asteroid belt is dominated by high albedo objects with mafic silicate surfaces. One would expect to see mostly spectra with 1- and 2-micron absorption bands based on this earlier work. Only 5 (of 12) spectra have these expected features. The distribution of taxonomic types presented by Gradie and Tedesco (1982) is in most cases a useful simplification of the compositional structure of the asteroid belt. The range of spectral characteristics seen with higher resolution in the near-IR has not been previously reported and is not represented in the standard asteroid taxonomy. Near-IR spectra contain valuable mineralogical information which enhances knowledge of the composition and structure of asteroids.

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