Charge-coupled device spectra of asteroids. I - Near-earth and 3:1 resonance asteroids

Details Charge-coupled device spectra of asteroids. I - Near-earth and 3:1 resonance asteroids Charge-coupled device spectra of asteroids. I - Near-earth and 3:1 resonance asteroids

Jun 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990aj.....99.1985l&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 99, June 1990, p. 1985-2011. Research supported by NASA.

Astronomy and Astrophysics

Astronomy

58

Asteroids, Astronomical Spectroscopy, Charge Coupled Devices, Orbital Resonances (Celestial Mechanics), Astronomical Observatories, Comet Nuclei, Nonparametric Statistics, Reflectance, Statistical Tests, Asteroids, Ccd Methods, Spectra, Earth Crossers, Resonance, Origin, Data, Source, Optical Properties, Techniques, Asteroid Belt, Color, Reflectance, Earth-Based Observations, Data Reduction, Astronomy, Reflectivity, Catalog, Albedo, S Asteroids, C Asteroids, Features, Hypotheses, Comparisons

Scientific paper

Main-belt asteroids and cometary nuclei are both frequently suggested sources of the relatively short-lived near-earth asteroids (NEAs). The asteroidal origin hypothesis is studied by obtaining new high-quality reflectivity spectra of 19 NEAs and 23 asteroids near the 3:1 resonance, and by performing a systematic comparison of these two groups of spectra. Nonparametric statistical tests are used to check for consistency between the color distributions of the two populations. The tests indicate that the difference between the two distributions is generally not significant at the 3 sigma level. However, this conclusion is dependent on the (unknown) size distribution of the NEAs. The observations are compatible with the hypothesis that the NEAs are derived from the 3:1 resonance region, but do not imply that this is the only possible source region.

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