Confusion of Extragalactic Sources in the Mid- and Far-Infrared: Spitzer and Beyond

Creators: Dole, H.; Rieke, G. H.; Lagache, G.; Puget, J.-L.; Alonso-Herrero, A.; Bai, L.; Blaylock, M.; Egami, E.; Engelbracht, C. W.; Gordon, K. D.; Hines, D. C.; Kelly, D. M.; Le Floc'h, E.; Misselt, K. A.; Morrison, J. E.; Muzerolle, J.; Papovich, C.; Pérez-González, P. G.; Rieke, M. J.; Rigby, J. R.; Neugebauer, G.; Stansberry, J. A.; Su, K. Y. L.; Young, E. T.; Beichman, C. A.; Richards, P. L.

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Abstract

We use the source counts measured with the Multiband Imaging Photometer for Spitzer at 24, 70, and 160 μm to determine the 5 σ confusion limits due to extragalactic sources: 56 μJy, 3.2 mJy, and 40 mJy at 24, 70, and 160 μm, respectively. We also make predictions for confusion limits for a number of proposed far-infrared missions of larger aperture (3.5-10 m diameter).

Additional Information

© 2004. The American Astronomical Society. Received 2004 April 8; accepted 2004 May 19. This work is based on observations made with the Spitzer observatory, which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under NASA contract 1407. We thank the funding from the MIPS project, which is supported by NASA through the Jet Propulsion Laboratory, subcontract 960785. We warmly thank J. Cadien.

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