The Infrared Camera (IRC) deep survey in the performance verification phase
Abstract
We report the first results of a near- and mid- infrared deep survey with the Infrared Camera (IRC) onboard AKARI in the performance verification phase. Simultaneous observations by the NIR, MIR-S and MIR-L channels of the IRC with effective integration times of 4529, 4908, and 4417 seconds at 3, 7, and 15 micron, covering 86.0, 70.3, and 77.3 arcmin^2 area, detected 955, 298 and 277 sources, respectively. The 5 sigma detection limits of the survey are 6.0, 31.5 and 71.2 micro Jy and the 50% completeness limit are 24.0, 47.5, and 88.1 micro Jy at 3, 7, and 15 micron, respectively. The observation is limited by source confusion at 3 micron. We have confirmed the turnover in the 15 micron differential source counts around 400 micro Jy, previously detected by surveys with the Infrared Space Observatory. The faint end of 15 micron raw source counts agree with the results from the deep surveys in the GOODS fields carried out with the Spitzer IRS peak up imager and the predictions of current galaxy evolution models. These results indicate that deep surveys with comprehensive wavelength coverage at mid-infrared wavelength are very important to investigate the evolution of infrared galaxies at high redshifts.
Cite
@article{arxiv.0708.2530,
title = {The Infrared Camera (IRC) deep survey in the performance verification phase},
author = {Takehiko Wada and Shinki Oyabu and Yoshifusa Ita and Hideo Matsuhara and Chris P. Pearson and Takashi Onaka and Youichi Ohyama and Fumihiko Usui and Naofumi Fujishiro and Daisuke Ishihara and Hirokazu Kataza and Woojung Kim and Toshio Matsumoto and Hiroshi Murakami and Itsuki Sakon and Toshihiko Tanabe and Toshinobu Takagi and Kazunori Uemizu and Munetaka Ueno and Hidenori Watarai},
journal= {arXiv preprint arXiv:0708.2530},
year = {2015}
}
Comments
15 pages, 13 figures, and 5 tables. Accepted for publication in the AKARI special issue of the Publications of the Astronomical Society of Japan