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Infrared Number Count Model and Estimated Source Confusion Limits

Published online by Cambridge University Press:  25 September 2002

M. Giard ,
J.P. Bernard ,
A. Klotz ,
I. Ristorcelli ,
T. T. Ishii ,
T. T. Takeuchi  and
J.-J. Sohn
T. T. Ishii
Affiliation:
Kwasan and Hida Observatories, Kyoto University, Japan
T. T. Takeuchi
Affiliation:
Institute of Astronomy, University of Tokyo, Japan
J.-J. Sohn
Affiliation:
Dept. of Earth and Environmental Sciences, Seoul National University
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Abstract

We formulate the relation between the beam pattern and the source confusion limit.In the formula for the general number counts, the upper cutoff of the integration is set to obtain a numerically reasonable result.The upper cutoff corresponds to the beam area, so we input the beam pattern as the two-dimensional array of the Point Spread Function (PSF).Based on the representative number counts, we evaluate the source confusion typical of various infrared spacecrafts (e.g. ASTRO-F[1]).

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