Survey for a Small Asteroid Population in the Cosmic Evolution Survey Field

Details Survey for a Small Asteroid Population in the Cosmic Evolution Survey Field Survey for a Small Asteroid Population in the Cosmic Evolution Survey Field

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007pasj...59.1175t&link_type=abstract

Publications of the Astronomical Society of Japan, Vol.59, No.6, pp.1175--1183

Astronomy and Astrophysics

Astronomy

1

Minor Planets, Asteroids, Surveys, Techniques: Photometric

Scientific paper

We searched for small main-belt asteroids in the Cosmic Evolution Survey (COSMOS) field using the Subaru Prime Focus Camera (Suprime-Cam). The ecliptic latitude of the region is about - 10°. Using a method we developed to detect moving objects from two images, we detected 202 moving objects with a limiting magnitude of i' = 23.8mag in 1.7 deg2. Most of them are sub-km asteroid candidates. The number density is 122 deg-2, less than half of that in the ecliptic. The slope of the cumulative size distribution is 1.30±0.05 for asteroids with a diameter of 0.5--2km, consistent with that of sub-km asteroids in the ecliptic derived from a previous survey.

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