The Cool Surfaces of Binaries Near-Earth Asteroids

Details The Cool Surfaces of Binaries Near-Earth Asteroids The Cool Surfaces of Binaries Near-Earth Asteroids

Sep 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008dps....40.2508d&link_type=abstract

American Astronomical Society, DPS meeting #40, #25.08; Bulletin of the American Astronomical Society, Vol. 40, p.433

Astronomy and Astrophysics

Astronomy

1

Scientific paper

We present results from thermal-infrared observations of binary near-Earth asteroids (NEAs). These objects, in general, have surface temperatures cooler than the average values for non-binary NEAs. We discuss how this may be evidence of higher-than-average surface thermal inertia. The comparison of these binary NEAs with all NEAs and rapidly rotating NEAs suggests a binary formation mechanism capable of altering surface properties, possibly removing regolith: an obvious candidate is the YORP effect.
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Acknowledgments
This research was carried out while Marco Delbo and Kevin Walsh were Henri Poincare Fellows at the Observatoire de la Cote d'Azur. The Henri Poincare Fellowship is funded by the CNRS-INSU, the Conseil General des Alpes-Maritimes and the Rotary International -- District 1730.

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