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Paper: AzTEC/ASTE 1.1-mm Survey of the AKARI Deep Field-South
Volume: 418, AKARI, a Light to Illuminate the Misty Universe
Page: 307
Authors: Hatsukade, B.; Kohno, K.; Tamura, Y.; Nakanishi, K.; Iono, D.; Wilson, G. W.; Yun, M. S.; Hughes, D. H.; Matsuura, S.; Shirahata, M.; Takeuchi, T. T.; Scott, K. S.; Austermann, J. E.; Perera, T.; Aretxaga, I.; Tanaka, K.; Tosaki, T.; Matsuo, H.; Ezawa, H.; Kawabe, R.; the ADF-S team
Abstract: We present the first results of a deep 1.1-mm survey of the AKARI Deep Field-South (ADF-S) with the AzTEC camera on the Atacama Submillimetre Telescope Experiment (ASTE). This survey covers ∼400 arcmin2, of which the central 202 arcmin2 is a uniform low-noise region with an rms noise level of 0.48–0.71 mJy. This is one of the deepest surveys at 1-mm wavelength, to cover such a large contiguous region. We detected 37 sources with a significance of 3.5–10 σ. The expected number of false detections at ≥3.5 σ is at most one, indicating that the detected sources are highly reliable. We construct differential and cumulative number counts and find a difference in number counts among 1-mm blank field surveys: the number counts of the ADF-S are less than those of GOODS-N and COSMOS fields. Most of the sources are not detected in the far-infrared bands of the AKARI, suggesting that they lie mostly at z ga 1 given the detection limits. In this survey, about 10% of cosmic infrared background at 1.1 mm is resolved into discrete sources.
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