Other
Scientific paper
Sep 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006dps....38.7102c&link_type=abstract
American Astronomical Society, DPS meeting #38, #71.02; Bulletin of the American Astronomical Society, Vol. 38, p.626
Other
Scientific paper
In collaboration with Shepard et al. (abstract this volume), we are continuing a long-term infrared spectroscopic survey of main-belt M-class (and other X-complex) asteroids. When an asteroid is observed to have rotational variability in radar cross-section, one possible explanation is compositional variability, which should be reflected in a correlated infrared spectral rotational variability. One third of the 12 M-types observed to date show radar albedos unambiguously consistent with metallic compositions. How is this reflected in infrared-derived composition? Our goal is to parallel the tripling in the number of radar observed M-class targets with rotationally-resolved infrared and 3-micron observations within the next five years. This year, we will present results focusing on asteroid 129 Antigone.
Acknowledgements. This work was supported by grants from the Research Corporation and the National Science Foundation (AST-0605903). BEC, MKS, and ASR are guest astronomers at the NASA Infrared Telescope Facility on Mauna Kea, Hawaii.
Clark Beth Ellen
Rivkin Andrew S.
Shepard Michael K.
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