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A deep ISOCAM survey in the SSA13

Published online by Cambridge University Press:  25 September 2002

M. Giard ,
J.P. Bernard ,
A. Klotz ,
I. Ristorcelli ,
Y. Sato ,
K. Kawara ,
Y. Sofue ,
L.L. Cowie ,
D.B. Sanders  and
R.D. Joseph
...Show all authors
Y. Sato*
Affiliation:
Institute of Astronomy, University of Tokyo, 2-21-1 Osawa, Mitaka, Tokyo 181-0015, Japan
K. Kawara
Affiliation:
Institute of Astronomy, University of Tokyo, 2-21-1 Osawa, Mitaka, Tokyo 181-0015, Japan
Y. Sofue
Affiliation:
Institute of Astronomy, University of Tokyo, 2-21-1 Osawa, Mitaka, Tokyo 181-0015, Japan
L.L. Cowie
Affiliation:
Institute for Astronomy, University of Hawaii, 2680 Woodlawn Drive, Honolulu, HI 96822, USA
D.B. Sanders
Affiliation:
Institute for Astronomy, University of Hawaii, 2680 Woodlawn Drive, Honolulu, HI 96822, USA
R.D. Joseph
Affiliation:
Institute for Astronomy, University of Hawaii, 2680 Woodlawn Drive, Honolulu, HI 96822, USA
Y. Taniguchi
Affiliation:
Astronomical Institute, Graduate School of Science, Tohoku University, Aramaki, Aoba Sendai 980-8578, Japan
H. Matsuhara
Affiliation:
Institute of Space and Astronautical Sciences, 3-1-1 Yoshinodai, Sagamihara, Kanagawa 229-8510, Japan
T. Matsumoto
Affiliation:
Institute of Space and Astronautical Sciences, 3-1-1 Yoshinodai, Sagamihara, Kanagawa 229-8510, Japan
H. Okuda
Affiliation:
Gunma Astronomical Observatory, 6860-86 Nakayama, Takayama, Agatsuma, Gunma 377-0702, Japan
K. Wakamatsu
Affiliation:
Faculty of Engineering, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan
*
ysato@ioa.s.u-tokyo.ac.jp
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Abstract

We present initial results of a deep mid-infrared survey conducted in the high galactic latitude field SSA13 with ISO. We have surveyed through the broad band filter LW2 (5-8.5 μm) of the mid-infrared camera ISOCAM to probe the near-infrared light at high redshift. The 80% completeness limit for point sources in the central 6 arcmin2 reaches 10 μJy at 6.7 μm. 65 sources are detected down to 6 μJy in 16 arcmin2. The integral galaxy number counts are 1.4 × 104 deg-2 at 10 μJy with the slope of -1.5. The integrated 6.7 μm light down to 6 μJy is estimated as 0.43 nWm-2sr-1. Our counts are consistent with the results in the HDF and the model prediction based on the K band local luminosity function. It suggests that the majority of the detected sources are E/S0 galaxies at z>1.

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 4: Infrared and Submillimeter Space Astronomy: An International Colloquium to Honor the Memory of Guy Serra , 2002 , pp. 269
Copyright
© EAS, EDP Sciences, 2002

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